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| Number | Title | Issue Date |
| 6284388 | Steel with electrically insulating hematite layer The present invention is directed to a method of forming an electrically insulating layer on a steel article such as a stack of electrical steel laminations or an individual, unstacked electrical steel lamination, comprising exposing the article to an oxi... | 09/04/2001 |
| 6270590 | Low lead release plumbing components made of copper based alloys containing lead, and a method for obtaining the same A method for treating a component made of a copper-based alloy containing lead. The component has Pb and Pb salts on a surface thereof. The method includes the step of etching the surface of the component selectively to remove almost entirely the Pb and P... | 08/07/2001 |
| 6221501 | Steel with electrically insulating hematite layer The present invention is directed to a method of forming an electrically insulating layer on a steel article such as a stack of electrical steel laminations or an individual, unstacked electrical steel lamination, comprising exposing the article to an oxi... | 04/24/2001 |
| 6210547 | Enhanced solder surface and process for chemically and mechanically enhancing solder surface properties A process for altering surface properties of a mass of metal alloy solder comprising a first metal and a second metal. The process comprises exposing the mass to energized ions to preferentially sputter atoms of the first metal to form a surface layer rat... | 04/03/2001 |
| 6017641 | Coil spring resistive to delayed fracture and manufacturing method of the same A coil spring made of an oil-tempered steel wire with internal hardness of more than Hv 550 in cross-section, the surface hardness of the oil-tempered steel wire being determined in an extent between Hv 420 in a minimum value and hardness defined by subtr... | 01/25/2000 |
| 5362331 | Process and apparatus for producing Nb3 Al super-conducting wire An electromagnetically stable Nb3 Al multifilamentary superconducting wire having a high current density at a high level of magnetic field such as 20 tesla is provided by cold drawing a composite multicore consisting of a large number of Al or ... | 11/08/1994 |
| 5334263 | Substrate stabilization of diffusion aluminide coated nickel-based superalloys A superalloy article has a nickel-based superalloy substrate containing TCP-phase forming elements such as rhenium, chromium, tantalum and tungsten. A carbide precipitate-containing region is formed within the substrate extending to a carbide depth below ... | 08/02/1994 |
| 5000371 | Method of producing a metallic interface A method for producing a metallic interface suitable for overlaying consists of exposing the area of an alloy combination to be overlayed to a temperature above its lower critical until an element reduced zone arises. This element reduced zone more easily... | 03/19/1991 |
| 4975335 | Fe-Mn-Al-C based alloy articles and parts and their treatments This application is a continuation-in-part of application Ser. No. 07/218695, filed Aug. 8, 1988. This invention describes a series of Fe-Mn-Al-C based corrosion resistance alloys. It also describes how to obtain such alloys which has comparable good corr... | 12/04/1990 |
| 4959279 | Superconducting wire containing multifilamentary superconducting alloy A superconducting wire containing a multifilamentary superconducting alloy, comprising at least one composite containing a first matrix in which a plurality of superconducting alloy filaments have been arranged and a second matrix in which at least one co... | 09/25/1990 |
| 4900375 | Magnesium-treated, decarburizingly-annealed cast iron material A magnesium-treated, decarburizingly-annealed cast iron material includes 4% or less carbon by weight, 2% or less silicon by weight, at least 0.010% magnesium by weight, and at least 0.001% sulphur by weight, the remainder being iron. The cast iron materi... | 02/13/1990 |
| 4545827 | Low silicon steel electrical lamination strip The chemical composition and processing of a cold rolled steel strip are controlled. Laminations for the core of an electric motor are stamped from the strip and decarburized to produce a lamination having a 1.5 T (15 kG) average core loss value less than... | 10/08/1985 |
| 4528043 | Surface oxide layer treatment In Titanium casting the surface of the casting is usually contaminated with a brittle oxide layer which has to be removed. Physical or chemical machining reduces the dimensions of the casting and adds to its cost. Chemical reagents may remove fine surface... | 07/09/1985 |
| 4483722 | Low alloy cold-worked martensitic steel A method of producing a low carbon, low alloy, martensitic, cold-worked steel is disclosed. A low alloy steel is provided having the ability to form an essentially martensitic structure upon air cooling from a temperature above its Acl. The ste... | 11/20/1984 |
