Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7442268 | Method of manufacturing cold rolled dual-phase steel sheet A steel sheet having (a) a dual phase microstructure with a martensite phase and a ferrite phase and (b) a composition containing by percent weight: 0.01% to 0.2% C; 0.3% to 3% Mn; 0.05% to 2% Si; 0.1% to 2% Cr; 0.01% to 0.10 Al; and 0.0005% to 0.01% Ca, with the ba... | 10/28/2008 |
| 7413617 | Composite structure sheet steel with excellent elongation and stretch flange formability The present invention provide a TRIP-type composite structure steel plate of the TPF steel type in which elongation and stretch flange formability at room temperature are improved by controlling the morphology of the second-phase structure. In a composite structure ... | 08/19/2008 |
| 7252724 | High tensile hot-rolled steel sheet having excellent strain aging hardening properties and method for producing the same A high tensile strength hot-rolled steel sheet having superior strain aging hardenability, which has high formability and stable quality characteristics, and in which satisfactory strength is obtained when the steel sheet is formed into automotive components, thus e... | 08/07/2007 |
| 7169244 | Process for manufacturing steel strip with low aluminum content for containers The present invention provides a process for manufacturing a steel strip with low aluminum content, which includes: hot-rolling a steel strip which includes between 0.050 and 0.080% by weight of carbon, between 0.25 and 0.40% by we... | 01/30/2007 |
| 7169243 | Aluminum-killed medium-carbon steel sheet for containers and process for its preparation A process is provided for preparation of an aluminum-killed medium-carbon steel sheet containing by weight from 0.040 to 0.080% of carbon, from 0.35 to 0.50% of manganese, from 0.040 to 0.070% of aluminum, from 0.004 to 0.006% of nitrogen, the remainder being iron a... | 01/30/2007 |
| 7114359 | Method for producing bent spring rails from an endless spring band The invention relates to a method for producing bent spring rails from an endless spring band. The method is characterized by the following steps: continuous bending of a section of spring band; cutting the bent section of spring band into a spring rail; discontinuo... | 10/03/2006 |
| 7090731 | High strength steel sheet having excellent formability and method for production thereof A high strength steel sheet having (2-1) a base phase structure, the base phase structure being tempered martensite or tempered bainite and accounting for 50% or more in terms of a space factor relative to the whole structure, or the base phase structure comprising ... | 08/15/2006 |
| 7067023 | Cold rolled steel sheet and galvanized steel sheet having strain age hardenability and method of producing the same An object of the present invention is to provide a cold-rolled steel sheet and an alloyed hot-dip galvanized steel sheet in which tensile strength is effectively increased by press forming and heat treatment while maintaining excellent deep drawability in press form... | 06/27/2006 |
| 7037388 | Steel plate for paint use and manufacturing method thereof A steel plate for paint use which contains C (0.12% or less), Si (1.0% or less), Mn (2.5% or less), P (0.05% or less), S (0.02% or less), and Cr (0.05% or less), Cu (0.05–3.0%), Ni (0.05–6.0%), Ti (0.025–0.15%), and Cu+Ni (0.50% or more), with PCM b... | 05/02/2006 |
| 6957704 | Limit clamp for use with casing attachments A limit clamp for securing a tool to a casing having a groove in its outer surface. The limit clamp comprises a block having a base and a flange. The base is positioned in the groove to contact at least one stop in the groove and the flange extends out of the groove... | 10/25/2005 |
| 6902632 | High tensile strength cold rolled steel sheet having excellent strain age hardening characteristics and the production thereof The present invention presents a high tensile strength cold rolled steel sheet having excellent formability, impact resistance and strain age hardening characteristics, and the production thereof. As a specific means, a slab having a composition which contains, by m... | 06/07/2005 |
| 6899771 | High tensile strength cold rolled steel sheet having excellent strain age hardening characteristics and the production thereof The present invention presents a high tensile strength cold rolled steel sheet having excellent formability, impact resistance and strain age hardening characteristics, and the production thereof. As a specific means, a slab having a composition which contains, by m... | 05/31/2005 |
| 6858099 | Steel material production method A method for producing a steel material having a high fatigue strength and given a uniform residual stress by a rapid treatment. A marageing steel is subjected to a cold plastic working to have a predetermined dimension, to a solution treatment for 60 minutes or mor... | 02/22/2005 |
| 6849139 | Methods of forming copper-containing sputtering targets The invention includes a method of forming a sputtering target containing copper of a purity of at least about 99.999 wt. %, and at least one component selected from the group consisting of Ag, Sn, Te, In, B, Bi, Sb, and P dispersed within the copper. The total of A... | 02/01/2005 |
| 6743307 | High resistance steel band or sheet and method for the production thereof The invention relates to a higher-strength steel strip or steel sheet comprising a predominantly ferritic-martensitic microstructure with a martensite content of between 4 and 20%, wherein the steel strip or steel sheet, apart from Fe and impurities due to smelting,... | 06/01/2004 |
| 6702904 | High tensile cold-rolled steel sheet having excellent strain aging hardening properties The present invention presents a high tensile strength cold rolled steel sheet having excellent formability, impact resistance and strain age hardening characteristics, and the production thereof. As a specific means, a slab having a composition which con... | 03/09/2004 |
| 6695933 | Ultra-high strength cold rolled steel sheet and method for manufacturing the same An ultra-high strength cold rolled steel sheet having a tensile strength of 880 to 1170 MPa, that consists essentially of 0.01 to 0.07% C, 0.3% or less Si, 0.1% or less P, 0.01% or less S, 0.01 to 0.1% sol.Al, 0.0050% or less N, 1.6 to 2.5% of the sum of ... | 02/24/2004 |
| 6692584 | High tensile cold-rolled steel sheet excellent in ductility and in strain aging hardening properties, and method for producing the same The present invention provides a high tensile cold-rolled steel sheet having superior ductility, strain age-hardening characteristics, and crash resistance properties, and also provides a manufacturing method therefor. As a particular means, a thin cold-r... | 02/17/2004 |
| 6673170 | Aluminum-killed medium-carbon steel sheet for containers and process for its preparation Aluminum-killed medium carbon steel sheets, and the steel sheet stock prepared from it, is useful for manufacturing containers for a variety of food and industrial purposes. High mechanical strength is imparted to steel sheeting when the sheeting is proce... | 01/06/2004 |
| 6638371 | Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the same A cold-rolled steel sheet having an ultrafine grain structure including a ferrite phase provided. The cold-rolled steel sheet contains C, Si, Mn, Ni, Ti, Nb, Al, P, S, N and Fe and incidental impurities. The ferrite phase has a content of 65 percent by vo... | 10/28/2003 |
| 6635127 | Steel strapping and method of making Steel strapping and a method of manufacturing steel strapping are disclosed. The steel strapping has the following composition in wt % and a microstructure including a matrix of recovery-annealed cold worked ferrite containing martensite and carbides disp... | 10/21/2003 |
| 6605163 | Process for manufacturing a strip made of an Fe-Ni alloy Process for manufacturing a strip made of an Fe--Ni alloy of the "γ' and/or γ" structural hardening" type, the thermal expansion coefficient between 20° C. and 150° C. of which is less than 7×10-6 /K, in which a hot strip is manufactured e... | 08/12/2003 |
| 6589369 | High fatigue strength steel sheet excellent in burring workability and method for producing the same A compound structure steel sheet excellent in burring workability made of a steel containing, by mass, 0.01 to 0.3% of C, 0.01 to 2% of Si, 0.05 to 3% of Mn, 0.1% or less of P, 0.01% or less of S, and 0.005 to 1% or Al, and having the microstructure being... | 07/08/2003 |
| 6475309 | Rolling bearing steel having a surface with a lower bainitic structure and a method for the production thereof A method for producing a rolling bearing component, in which, before ustenizing, the steel is subjected to cold deformation and quenching is such that the bainitic structure is obtained; and a rolling bearing component produced by the method, such as a ro... | 11/05/2002 |
| 6403026 | Steel and process for the manufacture of a component for bearings Steel for the manufacture of a component for bearings, the chemical composition of which comprises, by weight: 0.6%ࣘCࣘ1.5%; 0.4%ࣘMnࣘ1.5%; 0.75%ࣘSiࣘ2.5%, 0.2%ࣘCrࣘ2%; 0%ࣘNiࣘ0.5%; 0%ࣘMoࣘ0.2%; 0%ࣘAlࣘ0.05%; Sࣘ0.04%; the ... | 06/11/2002 |
| 6398887 | Aluminum-killed low carbon steel sheet for containers and method of making The object of the invention is an aluminum-killed low-carbon steel sheet comprising by weight between 0.022 and 0.035% of carbon, between 0.15 and 0.25% of manganese, between 0.040 and 0.070% of aluminum, between 0.004 and 0.006% of nitrogen, the remainde... | 06/04/2002 |
| 6364973 | Deep-drawn parts made of spring sheet steel which are especially used as a lightweight structural member or vehicle body part, and a method for the production thereof The invention relates to drawn pieces made of steel plate, particularly for motor vehicles bodies, and to a process for manufacturing such drawn pieces. In order to be able to manufacture drawn pieces with a high piece strength but of a low weight and wit... | 04/02/2002 |
| 6273971 | Method of manufacturing cold rolled steel sheet excellent in resistance of natural aging and panel properties The present invention provides a method of manufacturing a cold rolled steel sheet and a hot-dip zinc-coated steel sheet having excellent surface properties, an excellent resistance to natural aging and an excellent dent resistance of panel and, thus, ada... | 08/14/2001 |
| 6143100 | Bake-hardenable cold rolled steel sheet and method of producing same A bake hardenable cold-rolled steel sheet and a method for producing the steel sheet are provided, wherein the steel sheet includes carbon in a range of about 0.003-0.1 wt. %, with the amount of carbon in solution being about 3-30 ppm, and the steel is su... | 11/07/2000 |
| 5928442 | Medium/high carbon low alloy steel for warm/cold forming A medium/high carbon low alloy steel which can be cold formed by cold or warm forging and heat treated. The material consists essentially of: ______________________________________ Element Weight Percent _______________________________... | 07/27/1999 |
| 5855696 | Ultra low carbon, cold rolled steel sheet and galvanized steel sheet having improved fatigue properties and processes for producing the same The cold rolled steel sheet or galvanized steel sheet comprises by weight C: 0.0001 to 0.0026%, Si: not more than 1.2%, Mn: 0.03 to 3.0%, P: 0.015 to 0.15%, S: 0.0010 to 0.020%, Al: 0.005 to 0.1%, N: 0.0005 to 0.0080% and B: 0.0003 to 0.0030% with the bal... | 01/05/1999 |
| 5637161 | Method of producing an alloy sheet for a shadow mask A method for manufacturing an alloy sheet for a shadow mask is provided which includes: (i) annealing a hot-rolled sheet containing Fe and Ni at a temperature of 910° to 990° C.; (ii) cold-rolling the annealed hot-rolled sheet from step (i) to produce a... | 06/10/1997 |
| 5542996 | Method for manufacturing an ultra-high strength cold-rolled steel sheet with desirable delayed fracture resistance A method for manufacturing an ultra-high-strength cold-rolled steel sheet having desirable delayed fracture resistance, which comprises: preparing a material consisting essentially of 0.1 to 0.25 wt. % carbon, up to 1 wt. % silicon, 1 to 2.5 wt. % mangane... | 08/06/1996 |
| 5421920 | Process for producing rolled shape steel material having high strength, high toughness, and excellent fire resistance After a predeoxidation treatment of a molten steel comprising as basic ingredients, in terms of % by weight, 0.04 to 0.20% of C, 0.05 to 0.50% of Si, 0.4 to 2.0% of Mn, 0.3 to 0.7% of Mo, 0.003 to 0.015% of N, 0.04 to 0.20% of V and less than 0.005% of Al... | 06/06/1995 |
| 5356494 | High strength cold rolled steel sheet having excellent non-aging property at room temperature and suitable for drawing and method of producing the same The invention relates to a high strength cold rolled steel sheet having excellent non-aging property at room temperature and excellent drawability, said steel sheet having a dual-phase structure composed of a high-temperature transformed ferrite phase and... | 10/18/1994 |
| 5106431 | Process for creating high strength tubing with isotropic mechanical properties High strength alloy steel cartridge cases characterized by very high isotropic yield strength characteristics are produced from high temperature austenitic conditioned materials by subjecting the materials to a substantial one-pass draw operation and ther... | 04/21/1992 |
| 5074926 | High tensile cold rolled steel sheet and high tensile hot dip galvanized steel sheet having improved stretch flanging property and process for producing same A high tensile cold rolled steel sheet improved in stretch flanging property, containing 0.03% to 0.15% by weight of C, 0.05% or less by weight of Si, 0.5% to 1.2% by weight of Mn, 0.005% to 0.045% by weight of Nb, and 0.10% or less by weight of Al, the r... | 12/24/1991 |
| 5061326 | Method of making high silicon, low carbon regular grain oriented silicon steel A process of producing high silicon, low melt carbon regular grain electrical silicon steel having a final gauge of from 14 mils (0.35 mm) to about 6 mils (0.15 mm) or less, including the steps of providing a hot band and removing the hot band scale, if n... | 10/29/1991 |
| 4990196 | Process for manufacturing building construction steel having excellent fire resistance and low yield ratio Disclosed is a process for manufacturing a building construction steel having excellent high-temperature characteristics, which can be marketed at an economically reasonable price. According to this process, a slab having a steel composition in which appr... | 02/05/1991 |
| 4931107 | Process for producing a cold rolled steel sheet having a good ageing resistance by continuous annealing A cold rolled steel sheet having a good ageing resistance is produced by subjecting a cold rolled steel sheet to continuous annealing including recrystallization, grain growth, quenching, supercooling, reheating and overageing according to inclinatory coo... | 06/05/1990 |
