| Patents for C21D 6 - Heat treatment of ferrous alloys (4,815) |
|---|
| 07/21/1992 | US5131960 Heat treatment process |
| 07/15/1992 | EP0494688A1 Process for producing amorphous alloy forming material |
| 07/14/1992 | US5130207 Thin wall steel cartridge cases |
| 07/01/1992 | EP0493218A1 Process for manufacturing stovenless steel with two phase ferrite-martensite structure and steel thereby obtained |
| 07/01/1992 | EP0492674A1 Ferritic heat-resisting cast steel and a process for making the same |
| 07/01/1992 | EP0492623A1 Process for making an electric-resistance-welded steel pipe with high strength |
| 07/01/1992 | CN1017260B Apparatus and method for deep cryogenic treatment of materils |
| 06/30/1992 | US5125988 Hot working to refine crystal grains and make them anisotropic |
| 06/23/1992 | US5123979 Alloy for fe nd b type permanent magnet, sintered permanent magnet and process for obtaining it |
| 06/23/1992 | CA1303945C 9 chromium - 1 molybdenum alloy having superior high temperature properties and weldability, a method for preparing same and articles fabricated therefrom |
| 06/16/1992 | US5122199 Copper brazed torque converter pump housing made from formable high strength microalloyed steel |
| 05/26/1992 | CA1301603C Method of annealing an aperture shadow mask for a color cathode ray tube |
| 05/20/1992 | EP0486008A1 Manufacturing thin wall steel cartridge cases |
| 05/20/1992 | EP0486007A1 Process for creating high strength tubing with isotropic mechanical properties |
| 05/20/1992 | EP0485641A1 Razor blade steel having high corrosion resistance, razor blades and a process for manufacturing razor blades |
| 05/19/1992 | US5114669 Ferromagnetic materials |
| 05/14/1992 | CA2055351A1 Process for creating high strength tubing with isotropic mechanical properties |
| 05/14/1992 | CA2055239A1 Manufacturing thin wall steel cartridge cases |
| 04/22/1992 | EP0481377A2 Process for producing high-strength stainless steel strip |
| 04/21/1992 | US5106431 Process for creating high strength tubing with isotropic mechanical properties |
| 04/21/1992 | US5106010 Welding high-strength nickel base superalloys |
| 04/01/1992 | EP0478374A2 Welding high-strength nickel base superalloys |
| 04/01/1992 | CN1059961A T-branch used in pipe-lines and shaping technology thereof |
| 03/24/1992 | US5098489 Process for manufacturing high-strength parts of an automobile transmission system |
| 03/19/1992 | WO1992004478A1 Austenitic wear resistant steel and method for heat treatment thereof |
| 03/18/1992 | CN1059566A Gas-liquid method and equipment for ultra-low temperature metal treatment |
| 03/17/1992 | CA1297320C High strength high toughness steel |
| 03/04/1992 | EP0473561A1 A method of heat treatment of a steel product |
| 02/25/1992 | US5091022 Manufacturing process for sintered fe-p alloy product having soft magnetic characteristics |
| 02/18/1992 | US5089067 Cast and forged golf club heads |
| 01/28/1992 | US5084116 Rolling contact element steel and rolling bearing made thereof |
| 01/22/1992 | EP0467756A1 Austenitic steel having improved strength properties at high temperature, process for its manufacturing and the fabrication of mechanical parts, more particularly of valves |
| 01/22/1992 | EP0467749A1 Method of hot dip aluminium coating of a ferritic stainless steel strip |
| 01/09/1992 | WO1992000394A1 Methods of monitoring precipitates in metallic materials |
| 01/08/1992 | EP0464275A1 Improvement of magnetic and mechanical properties of amorphous alloys by pulse high current |
| 01/02/1992 | EP0463647A1 Security paper and its manufacture procedure |
| 12/27/1991 | EP0462779A2 Method of making steel useful in springs |
| 12/18/1991 | EP0461652A1 Flat spring hose clamp and manufacture of same |
| 12/17/1991 | US5073211 Method for manufacturing steel article having high magnetic permeability and low coercive force |
| 12/17/1991 | US5073208 Bending tube, stress relieving |
| 12/11/1991 | EP0460591A1 High performance high strength low alloy steel |
| 12/06/1991 | CA2043836A1 High performance high strength low alloy steel |
| 12/04/1991 | EP0459547A1 Precipitation-hardenable tool steel |
| 11/26/1991 | USRE33753 Austenitic improved high-temperature strength corrosion resistance of carbon, nitrogen, manganese, chromium, nickel, molybdenum, vandadium, niobium, silicon, sulfur, phosphorus and iron |
| 11/26/1991 | US5067551 Method for manufacturing alloy rod having giant magnetostriction |
| 11/06/1991 | EP0455346A1 Production method for a vehicular endless track bushing |
| 11/06/1991 | CN1055892A Method and apparatus for inhibiting stress corrosion cracking |
| 10/22/1991 | US5059257 Heat treatment of precipitation hardenable nickel and nickel-iron alloys |
| 10/15/1991 | CA1290657C Method of directly softening rolled machine structural steels |
| 10/08/1991 | US5055144 Annealing amorphous alloy, transforming to different resistivity |
| 09/20/1991 | CA2038442A1 Ferrous alloy for turbine components and heat treatment for improved properties |
| 09/18/1991 | CN1013961B High temp. character of improved selected chromium-molybdenum improved alloy and method for soldable ability |
| 09/17/1991 | US5049210 Oil Country Tubular Goods or a line pipe formed of a high-strength martensitic stainless steel |
| 09/17/1991 | US5048162 Manufacturing thin wall steel cartridge cases |
| 09/03/1991 | US5044422 Cryogenic processing of orthopedic implants |
| 08/28/1991 | CN1054101A Amorphous fe-b-si alloys exhibiting enhanced ac magnetic properties and handleability |
| 08/27/1991 | US5043027 Heating alloy in a salt bath for a set time; quickly cooling in a water bath |
| 08/22/1991 | WO1991012617A1 Amorphous fe-b-si alloys exhibiting enhanced ac magnetic properties and handleability |
| 08/20/1991 | US5041172 Permanent magnet having good thermal stability and method for manufacturing same |
| 07/16/1991 | US5032195 FE-base shape memory alloy |
| 07/10/1991 | EP0436032A1 Method of producing high-strength stainless steel strip having duplex structure and excellent spring characteristics |
| 06/25/1991 | US5026436 Stress corrosion cracking resistance, controlled heating, differential cooling of inner and outer surfaces; non-magnetizable drill stems and rod sections |
| 06/12/1991 | EP0432060A1 Permanent magnet alloy of the type iron-neodymium-boron, sintered permanent magnet and manufacturing process |
| 06/12/1991 | CA2005466A1 Air-cooling duplex bainite-martensite steels |
| 06/11/1991 | CA1284723C Apparatus and method for the deep cryogenic treatment of materials |
| 06/04/1991 | US5021102 Method of making a band for a band press |
| 06/04/1991 | US5021085 Melting, molding, hardening, annealing, cooling; heat resistance, wear resistance, high hardness |
| 06/02/1991 | CA2031242A1 Fe, nd and b alloy for permanent magnet; sintered permanent magnet and process therefor |
| 05/22/1991 | CN1051589A Precipilation intensification treating process of ionic nitrided piece |
| 05/21/1991 | US5017246 Martensitic stainless steels excellent in corrosion resistance and stress corrosion cracking resistance and method of heat treatment of the steels |
| 05/08/1991 | EP0425768A1 Method of making stainless ferritic chromium comprising steel |
| 04/24/1991 | CN1050903A Process for improving cold formability of heat-treatable steels |
| 04/17/1991 | EP0422574A1 High toughness stainless steels and the method of producing the same |
| 04/17/1991 | EP0422378A1 Method of improving the cold workability of hardenable steels |
| 04/13/1991 | CA2026307A1 Process for improving the cold formability of heat-treatable steels |
| 03/26/1991 | US5002009 Furnace for formation of black oxide film on the surface of thin metal sheet and method for formation of black oxide film on the surface of shadow mask material by use of said furnace |
| 03/13/1991 | EP0416098A1 Magnetically anisotropic sintered magnets. |
| 03/13/1991 | CN1011987B Process for production of double structure stainless cr-steel band having high strength, high ductility and low degree aeolotropy |
| 03/06/1991 | EP0414724A1 Ferromagnetic materials. |
| 03/05/1991 | CA1280914C Controlled expansion alloy |
| 02/28/1991 | DE4019635A1 Resistance heat treating of a ferromagnetic amorphous strip - using alternating or pulsed current with direct current magnetic field to improve magnetic properties |
| 02/21/1991 | DE4033706A1 Raising corrosion resistance of surface layer of stainless steel - with low carbon content by diffusion of nitrogen, useful for treatment of tools for food |
| 02/07/1991 | WO1991001385A1 Method of producing high-strength stainless steel strip having duplex structure and excellent spring characteristics |
| 02/06/1991 | EP0411161A1 Method for thermal treatment of high-speed steel |
| 02/06/1991 | CN1049032A Process for producing high strength stainless steel of duplex structure having excellent spring limit value |
| 02/05/1991 | US4990197 Heat treatment of rapidly quenched Fe-6.5 wt % Si ribbon |
| 01/30/1991 | EP0410033A1 Process for manufacturing ferritic steel work pieces |
| 01/23/1991 | EP0409687A1 Method of silicifying metallic parts by chemical vapour deposition |
| 01/23/1991 | EP0409647A2 Manufacturing process for sintered Fe-P alloy product having soft magnetic characteristics |
| 01/23/1991 | EP0409385A1 Method for domain refinement of oriented silicon steel by low pressure abrasion scribing |
| 01/22/1991 | US4986857 Hot working and heat treatment of corrosion resistant steels |
| 01/20/1991 | CA2021305A1 Gaseous phase chemical coating silicification process for steel |
| 01/20/1991 | CA2020156A1 Method for domain refinement of oriented silicon steel by low pressure abrasion scribing |
| 01/10/1991 | WO1991000602A1 Method for preparing permanent magnets based on neodymium-iron-boron |
| 01/02/1991 | EP0405362A1 Method for manufacturing alloy rod having giant magnetostriction |
| 12/19/1990 | CN1010856B Process for production of double structure stainless cr-steel band having high strength, high ductility and low degree aeolotropy |
| 12/05/1990 | EP0400195A1 Martensitic stainless steel |
| 12/04/1990 | US4975128 Method for heat-treating straight bead welded pipes |
| 11/28/1990 | EP0399905A1 Stainless ferritic steel containing in particular aluminium and titanium |
| 11/20/1990 | US4971634 Method of carburizing spheroidizing and quenching |