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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7402215 | Deformed wire for reinforcing marine optical fiber cable Deformed wire for a submarine optical fiber cable used for the pressure-proof layer of the submarine optical cable and having a high strength, that is, having a tensile strength of 1800 MPa or more, is provided, which deformed wire for reinforcing submarine optical ... | 07/22/2008 |
| 7393420 | Steel tube for bearing element parts and method of manufacturing as well as machining the same Steel tubes for bearing element parts according to the present invention, wherein the specific compositions are limited and an accumulation intensity of {211} face along with an impact property at ambient temperature in the longitudinal direction of steel tube are s... | 07/01/2008 |
| 7320178 | Standoff for cold plate and cold plate made with the standoff A standoff for a cold plate and a cold plate using the standoff are characterized by a coil pack consisting of a plurality of individual fluid conveying tubes formed into a coil pack having a desired configuration and held in place by a plurality of retaining wires.... | 01/22/2008 |
| 7252721 | Power transmission shaft A power transmission shaft having an improved strength and ensuring a stable torsion fatigue strength. The power transmission shaft has coupling members respectively provided on the opposite ends of an pipe part made of a steel material. The steel material includes ... | 08/07/2007 |
| 7048810 | Method of manufacturing hot formed high strength steel A method for processing a hot formed, high-tensile-strength steel having an ultimate tensile strength (UTS) of at least about 730 MPa (105 ksi) and excellent toughness to retain essentially all the strength and toughness is provided. This processing is needed for th... | 05/23/2006 |
| 6936119 | Method for producing metallic, non-rotationally symmetrical rings with a constant wall thickness over their circumference The invention is directed to a method and a device for producing metal, non-rotationally symmetric rings with a constant wall thickness along their circumference, particularly cam rings, starting from a hot-rolled pipe from which individual portions are severed, mec... | 08/30/2005 |
| 6866725 | Steel pipe excellent in formability and method of producing the same The present invention is a high strength steel pipe excellent in formability in hydroforming and similar forming methods, characterized by: containing, in mass, C of 0.0005 to 0.30%, Si of 0.001 to 2.0%, Mn of 0.01 to 3.0% and appropriate amounts of other elements i... | 03/15/2005 |
| 6793745 | Maraging type spring steel The invention relates to a high-strength, age-hardenable, corrosion-resistant maraging type spring steel, which is essentially comprised of 6.0 to 9.0 wt. % of Ni, 11.0 to 15.0 wt. % of Cr, 0.1 to 0.3 wt. % of Ti, 0.2 to 0.3 wt. % of Be and of a remainder consisting... | 09/21/2004 |
| 6736910 | High carbon steel pipe excellent in cold formability and high frequency hardenability and method for producing the same The invention provides a high-carbon steel pipe having superior cold workability and induction hardenability, and a method of producing the steel pipe. The method comprises the steps of heating or soaking a base steel pipe having a composition containing C: 0.3 to 0... | 05/18/2004 |
| 6632296 | Steel pipe having high formability and method for producing the same The present invention provides a steel pipe excellent in formability during hydraulic forming and the like and a method to produce the same, and more specifically: a steel pipe excellent in formability having an r-value of 1.4 or larger in the axial direc... | 10/14/2003 |
| 6517643 | Steel having excellent outer surface SCC resistance for pipeline A steel pipe is provided which is excellent in resistance to outer surface stress corrosion cracking (SCC) when used for a pipeline without impairing the fundamental requirement for the steel as a pipeline. The steel pipe has a surface adjusted to have a ... | 02/11/2003 |
| 6506121 | Cage for constant-velocity joint and method for manufacturing the same A cage having a plurality of pockets, and a pair of end faces of each pocket formed in the cage that oppose each other in a circumferential direction of the cage are formed by surfaces cut after hardening and their surface hardness is reduced to a value l... | 01/14/2003 |
| 6440234 | Martensitic stainless steel products A martensitic stainless steel product having a chromium content of 9 to 15% by weight and a surface from which mill scales generated during production are removed by a shot blasting. The surface satisfies that, when a color image of the surface taken with... | 08/27/2002 |
| 6406564 | Electric welded boiler steel pipe This invention provides a boiler steel pipe that exhibits a high creep rupture strength on a high-temperature high-pressure side and is excellent in electric weldability, and an electric welded boiler steel pipe having fewer defects at an electric welded ... | 06/18/2002 |
| 6379821 | Martensitic stainless steel welded pipe This invention relates to a large-diameter, thick-wall martensitic stainless steel welded pipe. For this welded pipe, the size of the raised weld bead portion on the inside surface is restricted to be small based on a conditional formula derived by consid... | 04/30/2002 |
| 6217676 | Steel for oil well pipe with high corrosion resistance to wet carbon dioxide and seawater, and a seamless oil well pipe A steel for oil well pipe, which has excellent resistance to localized corrosion in CO2 environments and corrosion in seawater, and a seamless pipe made of the steel. The steel includes, in weight %, more than 0.10 to 0.30% C, 0.10 to 1.0% Si, ... | 04/17/2001 |
| 6193816 | Spring with corrosion fatigue strength A spring is provided having a high durability in actual use and sagging resistance of the same level as or higher than conventional ones through improvement of the corrosion fatigue resistance. The spring uses as a material a steel including C: 0.35-0.55%... | 02/27/2001 |
| 6159311 | Martensitic stainless steel pipe and method for manufacturing the same A martensitic stainless steel pipe comprises, on the weight basis, C: 0.005 to 0.2%, Si: 1% or below, Mn: 0.1 to 5%, Cr: 7 to 15%, and Ni: 0 to 8%, wherein a wall thickness t (mm) and contents of C and Cr satisfy the relationship represented by the follow... | 12/12/2000 |
| 6140601 | Laser-welded steel pipe and method therefor A laser welded steel pipe having a weld zone containing a steel pipe containing 0.01 to 0.2 weight % C, 1 weight % or less S, 0.05 to 2 weight % Mn and 6 weight % or less Mn. The weld zone has a melted and solidified metal structure containing carbon and ... | 10/31/2000 |
| 5993570 | Linepipe and structural steel produced by high speed continuous casting A high strength, high toughness, low carbon/low manganese steel is provided that is further resistant to stepwise cracking and sulfide stress cracking. The steel can be produced by conventional or thin slab casting techniques using normal speeds, with low... | 11/30/1999 |
| 5961748 | Laser-welded steel pipe A laser-welded steel pipe includes: a steel pipe consisting essentially of C in an amount of 0.01 to 0.5 wt. %, Si in an amount of 1 wt. % or less, Mn in an amount of 0.05 to 2 wt. % and Cr in an amount of 6 wt. % or less; and a weld zone having a melted ... | 10/05/1999 |
| 5951944 | Lowly decarburizable spring steel A lowly decarburizable spring steel comprises, on a weight basis, 0.51 to 0.70% of C, 0.15 to 2.50% of Si, 0.40 to 1.20% of Mn, 0.005 to 0.100% of Al, 0.005 to 0.050% of S, at least one of 0.05 to 0.30% of Ni and 0.05 to 1.00% of Cu and, optionally, at le... | 09/14/1999 |
| 5876525 | Bobbin body and process for producing the same In order to simplify the production of a nigh-resistance bobbin body made of an aluminum alloy, the following process steps are performed: (a) extruding or flow extruding an essentially cylindrical bobbin blank; (b) cutting the bobbin blank to a length in... | 03/02/1999 |
| 5869195 | Corrosion resistant carbon steel Corrosion of conventional refinery steels due to sulfur bearing, carboxylic acid containing hydrocarbon materials is minimized by forming on the surface of the steel a fine grain iron sulfide film where at least the steel surface is substantially all of a... | 02/09/1999 |
| 5865913 | Deep cryogenic tempering process based on flashing liquid nitrogen through a dispersal system A method for treating firearm barrels and components to achieve an end result of increased accuracy and extended barrel life. The method involves placing the firearm barrels and components into cryogenic processing and heat treating equipment. The process... | 02/02/1999 |
| 5755895 | High strength line pipe steel having low yield ratio and excellent in low temperature toughness An ultra-high strength low yield ratio line pipe steel has an excellent HAZ toughness and field weldability and has a tensile strength of at least 950 MPa (exceeding X100 of the API standard). The steel is of a low carbon-high Mn-Ni-Mo-Nb-trace Ti type se... | 05/26/1998 |
| 5723089 | Line pipe metal arc welded with wire alloy A wire for gas metal arc welding containing 0.01 to 0.06 wt % of C, 0.10 to 0.60 wt % of Si, 0.9 to 3.1 wt % of Mn, 0.7 to 2.0 wt % of Cr, 0.005 to 0.06% of Ti, not greater than 0.08 wt % of Al and if necessary, 0.05 to 0.30 wt % of Cu, and the balance of... | 03/03/1998 |
| 5487795 | Method for heat treating an impact beam of automotive vehicle door and a system of the same A method and a system for heat treating an impact beam of an automotive vehicle door. Hot rolled steel sheets are prepared having a composition consisting essentially of 0.18% to 0.22% carbon; 1.0 to 1.5% manganese; 0.15 to 0.4% silicon; not more than 0.0... | 01/30/1996 |
| 5449420 | High strength steel member with a low yield ratio A high tensile strength, low yield ratio steel member has a steel composition consisting essentially of, by weight: C: 0.15-0.40%, Si: 0.10-0.70%, Mn: 1.0-2.7%, Cr: 1.0-3.5%, sol.Al: 0.01-0.05%, P: not larger than 0.025%, S: not larger than 0.015%, Mo: 0-1.0% Ni: 0... | 09/12/1995 |
| 5435858 | Method for TIG welding 1.25 Cr-0.5Mo steel pipe for which preheating and postheating treatments can be effectively omitted This invention is of a Cr--Mo steel pipe of a wall thickness of 13 mm or less, containing C: 0.03-0.10 wt %, Si: 0.50-1.00 wt %, Mn: 0.30-0.60 wt %, Pࣘ0.007 wt %, Sࣘ0.020 wt %, Cr: 1.00-1.50 wt %, Mo: 0.45-0.65 wt %, Al: 0.002-0.010 wt % and N: 0.002-... | 07/25/1995 |
| 5431748 | Electric-resistance-welded steel pipe with high strength An electric-resistance-welded steel pipe with high strength consists essentially of 0.05 to 0.30 wt. % C, 0.6 to 2.0 wt. % Mn, 0.03 to 0.70 wt. % Si, and 0.01 to 0.05 wt. % Nb. The balance is Fe and inevitable impurities, the steel pipe having a martensit... | 07/11/1995 |
| 5378427 | Corrosion-resistant alloy heat transfer tubes for heat-recovery boilers A corrosion-resistant austenitic alloy suitable for use in heat transfer tubes for heat-recovery boilers which withstands uniform corrosion, intergranular corrosion, and stress corrosion cracking in refuse-fired boilers and black-liquor combustion boilers... | 01/03/1995 |
| 5350561 | Cr-Mo steel pipe and welding method thereof A Cr-Mo steel pipe having a wall thickness of 5 to 25 mm consisting essentially of 0.03 to 0.10 wt. % C, 0.5 to 1.0 wt. % Si, 0.3 to 0.6 wt. % Mn, 0.02 wt. % or less P, 0.007 wt. % or less S, 1.0 to 1.5 wt. % Cr, 0.45 to 0.65 wt. % Mo, 0.002 to 0.1 wt. % ... | 09/27/1994 |
| 5286309 | Electric-resistance-welded steel pipe with high strength An electric-resistance-welded steel pipe with high strength. The pipe consists essentially of (a) 0.05 to 0.30 wt. % C, (b) 0.6 to 2.0 wt. % Mn, (c) 0.03 to 0.70 wt. % Si, (d) (i) 0.5 wt. % or less Mo by itself or (ii) 0.5 wt. % or less Mo with 1.2 wt. % ... | 02/15/1994 |
| 5238508 | Ferritic-austenitic duplex stainless steel Ferritic-austenitic duplex stainless steel comprising the following components in the following proportions in % by weight: 0 | 08/24/1993 |
| 5226978 | Steel tube alloy Seamless steel tubes suitable for use as grades of casing and line pipe having yield strengths in excess of 70,000 psi, without being heat treated, are made of an alloy comprising, by weight, about 0.10% to 0.18% carbon, about 1.0% to 2.0% manganese, abou... | 07/13/1993 |
| 5213633 | Electric resistance welded steel tube for machine structural use exhibiting outstanding machinability An electric resistance welded steel pipe for machine structural use exhibiting excellent machinability comprises, in weight percent, 0.02-0.60% C, not more than 0.4% Si, 0.20-2.0% Mn, not more than 0.030% P, not more than 0.040% S, 0.001--0.030% T.Al, 0.0... | 05/25/1993 |
| 5181974 | Automobile body reinforcing steel pipe An automobile body reinforcing steel pipe having a wall thickness-to-outer diameter ratio, t/D, defined by: 0.09-4.8×10-5 ×Lࣘt/Dࣘ0.16-6.0×10-5 ×L where L(mm) is a span of a bending load applied to the pipe. The pipe has a ten... | 01/26/1993 |
| 5180204 | High strength steel pipe for reinforcing door of car Herein described is a high strength steel pipe for reinforcing doors of a car, comprising a steel pipe made by seam-welding a steel sheet, wherein a ratio (Hv1 /Hv2) of a minimum hardness in a softened area of a weld affected zone to... | 01/19/1993 |
| 5160389 | Flexible tube for automotive exhaust systems A flexible tube for the exhaust system of an automobile made from a stainless steel is disclosed, which consists essentially of, by weight %: ______________________________________ C: at most 0.03%, Si: 0.1-2.0%, Mn: at most 2.0%, Cr: 18-26%, ... | 11/03/1992 |
