Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7381369 | Free cutting alloy Provided is free cutting alloy excellent in machinability, preserving various characteristics as alloy. The free cutting alloy contains: one or more of Ti and Zr as a metal element component; and C being an indispensable element as a bonding component with the metal... | 06/03/2008 |
| 7325717 | Welding material and a method of producing welded joint In the present invention, an iron based alloy which contains by mass %: 0.20% or less of C; 6.0 to 16.0% of Cr; 6.0 to 16.0% of Ni and whose martensitic transformation starting temperature (Ms point temperature) is in the range of 0-170° C., inclusive of 0° C. and... | 02/05/2008 |
| 7297214 | Free cutting alloy Provided is free cutting alloy excellent in machinability, preserving various characteristics as alloy. The free cutting alloy contains: one or more of Ti and Zr as a metal element component; and C being an indispensable element as a bonding component with the metal... | 11/20/2007 |
| 7286626 | Neutron absorbing coating for nuclear criticality control A neutron absorbing coating for use on a substrate, and which provides nuclear criticality control is described and which includes a nickel, chromium, molybdenum, and gadolinium alloy having less than about 5% boron, by weight. ... | 10/23/2007 |
| 7220520 | Photosensitive resin compositions A photosensitive resin composition comprising: (d) at least one polybenzoxazole precursor polymer (e) at least one compound having structure VI V1—Y—V2 VI wherein Y is ... | 05/22/2007 |
| 7025838 | Ferritic stainless steel sheet with excellent workability and method for making the same A ferritic stainless steel sheet for use in automobile fuel tanks and fuel pipes having smooth surface and resistance to organic acid is provided. The sheet contains, by mass, not more than about 0.1% C, not more than about 1.0 Si, not more than about 1.5% Mn, not m... | 04/11/2006 |
| 6960196 | Detectable heavy duty needle The present invention provides a detectable heavy duty needle cannula (12) for use in hypodermic syringes and the like. Needle cannula (12) comprises a magnetizable or magnetized stainless steel alloy, which enables needle cannula (12) to be det... | 11/01/2005 |
| 6953062 | Fuel tank or fuel pipe excellent in corrosion resistance and method for producing the same The present invention provides a fuel tank or a fuel pipe excellent particularly in the corrosion resistance of the outer surface in a salt damage environment, and is a fuel tank or a fuel pipe excellent in corrosion resistance characterized by: being formed by usin... | 10/11/2005 |
| 6935529 | Stainless steel fuel tank for automobile A fuel tank for a motor vehicle is fabricated from an austenitic stainless steel sheet having elongation of 50% or more after fracture by a uniaxial stretching test with a work-hardening coefficient of 4000 N/mm2 or a ferritic stainless steel sheet having... | 08/30/2005 |
| 6921511 | Sulphur-containing ferritic stainless steel that can be used for ferromagnetic parts Ferritic stainless steel that can be used for ferromagnetic parts, characterized in that it comprises in its composition by weight: C≦0.030% 1.0% | 07/26/2005 |
| 6761853 | Free-cutting tool steel A free-cutting tool steel is provided containing Fe and C in an amount of 0.1 to 2.5 wt %, Ti and or Zr where WTi+0.52WZr constitutes 0.03 to 3.5 wt %, and WTi represents Ti content and WZr represents Zr content, at least ... | 07/13/2004 |
| 6685881 | Stainless cast steel having good heat resistance and good machinability Disclosed is an austenitic stainless cast steel which has such a good heat resistance as can be used at a high temperature higher than 950° C. and a good machinability. The stainless cast steel consists essentially of, by weight %, C: 0.2-0.4%, Si: 0.5-2... | 02/03/2004 |
| 6673165 | High-hardness martensitic stainless steel excellent in corrosion resistance A high-hardness martensitic stainless steel excellent in corrosion resistance, comprising less than 0.15% by weight of C, from 0.10 to 1.0% by weight of Si, from 0.10 to 2.0% by weight of Mn, 0.010% or less of S, from 12.0 to 18.5% by weight of Cr, from 0... | 01/06/2004 |
| 6485680 | Resulfurized austenitic stainless steel Resulfurized stainless steel with high machinability and having an improved corrosion resistance, which includes, in its composition, anorthite- and/or pseudo-wollastonite- and/or gehlenite-type lime aluminosilicate inclusions combined with CrMnS inclusio... | 11/26/2002 |
| 6464935 | Steel for shaft A steel for shaft, which has corrosion resistance, machinability, and straightness at substantially the same levels as those of free cutting steel 12L14 plated with Ni, which has conventionally been used as a steel for shaft, and need not be plated on its... | 10/15/2002 |
| 6355212 | Alloy for corrosion-resistant coatings or surface coatings The invention is directed to anti-corrosive alloys and relates in particular to an alloy containing cobalt, chromium, aluminum, yttrium, silicon, a metal from the second main group, together with the corresponding oxide, in the following proportions: chro... | 03/12/2002 |
| 6344094 | Ferritic-austenitic two-phase stainless steel A ferritic-austenitic two-phase stainless steel consisting essentially of, in wt. %, over 0% to not more than 0.05% of C, 0.1 to 2.0% of Si, 0.1 to 2.0 of Mn, 20.0 to 23.0% of Cr, 3.0 to 3.9% of Ni, 0.5 to 1.4% of Mo, over 0% to not more than 2.0% of Cu a... | 02/05/2002 |
| 6332934 | Martensitic stainless steel for seamless steel pipe A martensitic stainless steel for seamless steel pipes, excellent in descaling property and machinability, having the following chemical composition, by weight %; 0.025 to 0.22% of C, 10.5 to 14% of Cr, 0.16 to 1.0% of Si, 0.05 to 1.0% of Mn, 0.05% or les... | 12/25/2001 |
| 6274084 | Corrosion-resistant low-nickel austenitic stainless steel Corrosion-resistant low-nickel austenitic stainless steel having the following compostion in percentages by weight: 0.01% | 08/14/2001 |
| 6206983 | Medium carbon steels and low alloy steels with enhanced machinability The invention relates to medium carbon steels and low alloy steels having a concentration of a machinability enhancing agent ("MEA"), i.e. tin and/or antimony, at its ferrite grain boundaries which enhances the steel's machinability and to processes for p... | 03/27/2001 |
| 6123784 | Austenitic stainless steel especially for making wire Austenitic stainless steel for the production of wire, which can be used in the field of drawing wire down to diameters of less than 0.3 mm and in the field of producing components subjected to fatigue, characterized by the following composition by weight... | 09/26/2000 |
| 6123897 | High chromium heat resistant cast steel material and pressure vessel formed thereof A heat resistant material and a pressure vessel by use thereof, having an excellent high temperature strength so as to be applicable to steam condition of 600° C. or more, are provided. Said material consists of C, Si, Cr, Ni, V, Nb, N, Mo and W in the r... | 09/26/2000 |
| 6096441 | Austenoferritic stainless steel having a very low nickel content and a high tensile elongation An austenoferritic stainless steel with high tensile elongation includes iron and the following elements in the indicated weight amounts based on total weight: carbon | 08/01/2000 |
| 6056917 | Austenitic stainless steel having a very low nickel content Austenitic stainless steel having a very low nickel content, of the following composition by weight: Carbon | 05/02/2000 |
| 6033625 | Parts of electronic devices made of ferritic free cutting stainless steel Improved parts of electronic apparatus made of ferritic free cutting steel, which enjoy high precision in size given by good machinability and free from trouble caused by corrosion of metal due to generation of sulfides. The material steel has an alloy co... | 03/07/2000 |
| 5939018 | Martensitic stainless steels for seamless steel pipe Martensitic stainless steels that enable the fabrication of high-strength seamless steel pipe suited for use in oil-well pipe and pipeline tubing by means of a Mannesmann plug mill or Mannesmann mandrel mill process, without the formation of defects durin... | 08/17/1999 |
| 5922145 | Steel products excellent in machinability and machined steel parts The present invention is directed to steel products which exhibit excellent machinability and are suitable for steel stocks of structural steel parts for a variety of machinery, such as transportation machinery including automobiles, machinery for industr... | 07/13/1999 |
| 5879619 | Hydrogen sulfide corrosion resistant high-Cr and high-Ni alloys A high-Cr and high-Ni alloy of the invention comprises the following chemical composition and has excellent corrosion resistance to hydrogen sulfide in an environment where a partial pressure of hydrogen sulfide is about 1 atm., or below and the temperatu... | 03/09/1999 |
| 5795411 | Ferritic stainless steel wire and steel wool Ferritic stainless steel which can be used for the production of steel wool, whose composition by weight is the following: carbonࣘ0.2%, siliconࣘ2%, manganeseࣘ2%, 11%ࣘchromiumࣘ30%, nickelࣘ1%, sulfurࣘ0.030, calciumࣙ×10-4 %, oxygenࣙ40 ×1... | 08/18/1998 |
| 5772956 | High strength, ferritic heat-resistant steel having improved resistance to intermetallic compound precipitation-induced embrittlement A martensitic heat resistant steel is provided which has improved high temperature creep strength, contains Co and, at a temperature of 600° C. or above, does not form an intermetallic compound substantially having a composition of Cr40 Mo | 06/30/1998 |
| 5709836 | Chromium steel sheets having an excellent press formability A chromium steel sheet having excellent press formability, particularly deep-drawing formability and resistance to secondary work brittleness. The construction is a chromium steel sheet including C: not more than 0.03 wt %, Si: not more than 1.0 wt %, Mn:... | 01/20/1998 |
| 5656237 | Resulfurized austenitic stainless steel with improved machinability The present invention relates to a resulfurized austenitic stainless steel with improved machinability, and which is especially useful in the field of machining at high cutting speed and in the field of bar turning.... | 08/12/1997 |
| 5651937 | Austenitic stainless steel, in particular for making wire Austenitic stainless steel for the production of wire, which can be used in the field of drawing to a diameter of less than 0.3 mm and in the field of producing parts subjected to wear.... | 07/29/1997 |
| 5591392 | Steel plate having good corrosion resistance to condensed water The invention relates to a steel plate which exhibits a good resistance to a corrosive atmosphere, containing weakly acidic condensed water comprising SO2, Cl- ion, and CO2 such as the exhaust gas from a boiler which burns... | 01/07/1997 |
| 5496515 | Ferritic stainless steel with improved machinability Ferritic stainless steel with improved machinability, which can be used especially in the field of screw machining, characterized by the following composition: C | 03/05/1996 |
| 5489416 | Heat-resistant, austenitic cast steel and exhaust equipment member made thereof Exhaust equipment members are made of a heat-resistant, austenitic cast steel having a composition consisting essentially, by weight, of 0.1-0.6% of C, less than 1.5% of Si, 1% or less of Mn, 8-20% of Ni, 15-30% of Cr, 0.2-1% of Nb, 2-6% of W, 0.001-0.01%... | 02/06/1996 |
| 5427635 | Martenstitic stainless steel with improved machinability The subject of the invention is a martensitic stainless steel with improved machinability, characterized in that its weight composition is the following: carbon lower than 1.2% silicon lower than or equal to 2% manganese lower than or equal to 2% chromium: 10.... | 06/27/1995 |
| 5413754 | Ferritic stainless steel exhibiting excellent atmospheric corrosion resistance and crevice corrosion resistance A ferritic stainless steel exhibiting excellent atmospheric corrosion resistance and crevice corrosion resistance can be provided by positively adding P thereto and by adequately adjusting Ca and Al. The ferritic stainless steel according to the present i... | 05/09/1995 |
| 5372778 | Electromagnetic stainless steel An electromagnetic stainless steel consists essentially of not more than 0.015 wt % of C, not more than 3.0 wt % of Si, not more than 0.5 wt % of Mn, not more than 0.030 wt % of P, not more than 0.030 wt % of S, 4-20 wt % of Cr, 0.2-7.0 wt % of Al, 0.02-0... | 12/13/1994 |
| 5362439 | Austenitic stainless steel having a high machinability and an improved cold deformation The weldable austenitic stainless steel having a high machinability and an improved cold deformation has the following composition by weight: C less than 0.1%; Si less than 2%; Mn less than 2%; S less than 0.03%; Ni between 8 and 10%; Cr between 15 and 25... | 11/08/1994 |
