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Class Information
Number: 148/217
Name: Metal treatment > Process of modifying or maintaining internal physical structure (i.e., microstructure) or chemical properties of metal, process of reactive coating of metal and process of chemical-heat removing (e.g., flame-cutting, etc.) or burning of metal > Carburizing or nitriding using externally supplied carbon or nitrogen source > With noncarburizing or non-nitriding reactive coating (e.g., oxidizing, siliconizing, boronizing, etc.)
Description: Process which includes a distinct and separate operation involving coating of a metal or metal alloy substrate with a material that reacts with the metal to provide a coating thereon containing the reaction product of the metal with an externally supplied reactant other than a carburizing or nitriding reactant.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7326306 |
Method for producing nitriding steel |
Feb. 5, 2008 |
| 7273857 |
Benzimidazolidinone derivatives as muscarinic agents |
Sep. 25, 2007 |
| 7264682 |
Titanium boride coatings on titanium surfaces and associated methods |
Sep. 4, 2007 |
| 7132129 |
Method of forming a diamond coating on an iron-based substrate and use of an iron-based substrate for hosting a CVD diamond coating |
Nov. 7, 2006 |
| 7115174 |
Method for producing and oxide layer on metallic elements |
Oct. 3, 2006 |
| 6982120 |
Hardened steel components and process of treating the same |
Jan. 3, 2006 |
| 6846367 |
Heat-treating method for improving wear-resistance and corrosion-resistance of chromium-plated steel substrate |
Jan. 25, 2005 |
| 6808680 |
Method of preventing or stopping sulfuric corrosion of metals |
Oct. 26, 2004 |
| 6807897 |
Hydraulic piston and process for its surface treatment |
Oct. 26, 2004 |
| 6774059 |
High crack resistance nitride process |
Aug. 10, 2004 |
| 6645315 |
Surface treatment process for mechanical parts subject to wear and corrosion |
Nov. 11, 2003 |
| 6524366 |
Method of forming nanograin tungsten carbide and recycling tungsten carbide |
Feb. 25, 2003 |
| 6503344 |
Boronizing agent in paste form |
Jan. 7, 2003 |
| 6503340 |
Method for producing chromium carbide coatings |
Jan. 7, 2003 |
| 6482272 |
Method of preventing nitridation or carburization of metals |
Nov. 19, 2002 |
| 6428849 |
Method for the co-deposition of silicon and nitrogen on stainless steel surface |
Aug. 6, 2002 |
| 6328819 |
Method and use of an apparatus for the thermal treatment, in particular nitriding treatment, of metal workpieces |
Dec. 11, 2001 |
| 6309474 |
Process for producing maraging steel |
Oct. 30, 2001 |
| 6294029 |
Method of treating and smoothing sliding surface |
Sep. 25, 2001 |
| 6284388 |
Steel with electrically insulating hematite layer |
Sep. 4, 2001 |
| 6245162 |
Boriding agent |
Jun. 12, 2001 |
| 6221501 |
Steel with electrically insulating hematite layer |
Apr. 24, 2001 |
| 6179932 |
Motor rotary shaft and manufacturing method thereof |
Jan. 30, 2001 |
| 6117249 |
Treating metallic machine parts |
Sep. 12, 2000 |
| 6093259 |
Color development method of metallic titanium and black and colored titanium manufactured by this method |
Jul. 25, 2000 |
| 6090223 |
Chromium nitride film and method for forming the same |
Jul. 18, 2000 |
| 6017401 |
Conductivity improvement in thin films of refractory metal |
Jan. 25, 2000 |
| 5948177 |
Collet metal treating process |
Sep. 7, 1999 |
| 5935722 |
Laminated composite of magnetic alloy powder and ceramic powder and process for making same |
Aug. 10, 1999 |
| 5912399 |
Chemical synthesis of refractory metal based composite powders |
Jun. 15, 1999 |
| 5840132 |
Lubricated boride surfaces |
Nov. 24, 1998 |
| 5753052 |
Method of treating ferrous surfaces subjected to high friction strains |
May. 19, 1998 |
| 5735971 |
Method for the Pre-treatment of steel parts prior to salt bath nitriding |
Apr. 7, 1998 |
| 5704994 |
Method of case-hardening shaped object |
Jan. 6, 1998 |
| 5662745 |
Integral engine valves made from titanium alloy bars of specified microstructure |
Sep. 2, 1997 |
| 5653822 |
Coating method of gas carburizing highly alloyed steels |
Aug. 5, 1997 |
| 5593571 |
Treating oxidized steels in low-sulfur reforming processes |
Jan. 14, 1997 |
| 5582655 |
Case nitrided aluminum product, process for case nitriding the same, and nitriding agent for the same |
Dec. 10, 1996 |
| 5573604 |
Process for manufacturing a turbine blade made of an (alpha/beta)-titanium base alloy |
Nov. 12, 1996 |
| 5505791 |
Process of producing nitrided and hardened nickel alloy products |
Apr. 9, 1996 |
| 5480471 |
Re-Fe-B magnets and manufacturing method for the same |
Jan. 2, 1996 |
| 5447599 |
Self-aligned process for capping copper lines |
Sep. 5, 1995 |
| 5421914 |
Surface modification of high temperature iron alloys |
Jun. 6, 1995 |
| 5419787 |
Stress reduced insulator |
May. 30, 1995 |
| 5413700 |
Treating oxidized steels in low-sulfur reforming processes |
May. 9, 1995 |
| 5405525 |
Treating and desulfiding sulfided steels in low-sulfur reforming processes |
Apr. 11, 1995 |
| 5383979 |
Process for producing a surface-hardened workpiece from sintered iron |
Jan. 24, 1995 |
| 5372654 |
Steel sheet for press working that exhibits excellent stiffness and satisfactory press workability |
Dec. 13, 1994 |
| 5372629 |
Method of making environmentally stable reactive alloy powders |
Dec. 13, 1994 |
| 5346560 |
Process for the treatment of ferrous metal parts to improve their corrosion resistance and friction properties simultaneously |
Sep. 13, 1994 |
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