| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 06/20/1978 | US4095804 Sealing means for high temperature, high pressure, cylindrical furnaces |
| 06/13/1978 | US4094086 Adjusting device for double-barrelled guns |
| 06/06/1978 | US4093842 Ported engine cylinder with selectively hardened bore |
| 06/06/1978 | US4093760 Skid pipe insulation for steel mill reheating furnaces |
| 06/06/1978 | US4093477 Chromium, cobalt, silicon, iron |
| 06/06/1978 | US4093195 Carburizing furnace |
| 05/30/1978 | US4092214 Nuclear reactor installation |
| 05/23/1978 | US4090891 Water-soluble polymers derived from copolymerization of diene and maleic acid or maleic acid derivative and aqueous quenching fluids prepared therefore |
| 05/23/1978 | US4090699 Apparatus and method of circulating a gas through coils of very long tubing during a heat treatment |
| 05/23/1978 | US4090698 Method and apparatus of inductively heating elongated workpieces |
| 05/23/1978 | US4090622 Rotary retort furnace |
| 05/09/1978 | US4088513 Method for heating a silicon-containing steel slab in a walking-beam type heating furnace |
| 05/09/1978 | US4088179 Cooling guide system for continuous casting machine |
| 05/02/1978 | US4087290 Process for the controlled cooling of ferrous metal |
| 05/02/1978 | US4087238 Method for enhancing the heating efficiency of continuous slab reheating furnaces |
| 05/02/1978 | CA1030342A1 Cooling apparatus for wire |
| 04/25/1978 | US4086464 Resistance heating device with improved workpiece feeding mechanism |
| 04/25/1978 | US4086462 Induction heating system for the continuous flow heating of workpieces |
| 04/25/1978 | US4086050 Method and apparatus for gas circulation in a heat treating furnace |
| 04/18/1978 | US4084990 Process for fabrication of decorative panel |
| 04/18/1978 | US4084798 Cooling systems for metal articles |
| 04/04/1978 | US4082577 Process for the heat treatment of steel |
| 04/04/1978 | US4082100 Apparatus for cooling hot slabs |
| 03/28/1978 | US4081298 Heat treatment of iron-nickel-phosphorus-boron glassy metal alloys |
| 03/21/1978 | US4079921 Apparatus and method for continuous treatment of metal coils or the like |
| 03/21/1978 | US4079919 Water spray quench process and apparatus |
| 03/14/1978 | US4079222 Continuous heating induction furnace |
| 03/07/1978 | US4077814 Method for thermally treating metal components |
| 03/07/1978 | US4077812 Method of working steel machine parts including machining during quench cooling |
| 02/21/1978 | US4075041 Combined mechanical and thermal processing method for production of seamless steel pipe |
| 02/21/1978 | US4074815 Turn-over cooling bed for bar-shaped rolled material, particularly billets |
| 02/07/1978 | US4072797 Boron nitride |
| 02/07/1978 | US4072298 Method of cooling a quenching bath of melted salt |
| 01/31/1978 | US4071381 Alloys of steel |
| 01/31/1978 | US4071311 Refractory insulation |
| 01/24/1978 | US4070210 Heat treatment |
| 01/24/1978 | US4069907 High speed printer having spokes with a plurality of sections connected together at an angle greater than zero |
| 01/17/1978 | US4069071 Method for generating a reducing atmosphere for heat-treating installations |
| 01/17/1978 | US4069069 Method for improving the surface quality of annealed steel strip |
| 01/17/1978 | US4069008 Method and apparatus for heating a workpiece |
| 01/17/1978 | US4069007 Rotary retort furnace |
| 01/17/1978 | US4068705 Forming apparatus with roller guide tube |
| 01/10/1978 | US4067756 High strength, high ductility low carbon steel |
| 01/03/1978 | US4066477 Method of maintaining temperature of salt bath during quenching of steel wire |
| 01/03/1978 | US4066474 Method of making high strength cold reduced steel by continuous annealing process |
| 01/03/1978 | US4066430 Method of tempering in a fluidized quenching medium |
| 12/27/1977 | US4065329 Continuous heat treatment of cold rolled steel strip |
| 12/27/1977 | US4065252 Spray mist cooling arrangement |
| 12/27/1977 | US4065249 Heater for billets |
| 12/20/1977 | US4063719 Heat treatment apparatus |
| 12/13/1977 | US4063063 Method of descaling metal products |
| 12/13/1977 | US4062700 Method for producing a steel sheet with dual-phase structure composed of ferrite- and rapidly-cooled-transformed phases |
| 12/13/1977 | US4062504 Apparatus for continuously accumulating a travelling metal strip or wire-like material |
| 11/22/1977 | US4059253 Apparatus for cooling steel blooms, slabs, and the like |
| 11/08/1977 | US4057230 Die quench machine and method |
| 11/01/1977 | US4056703 Process and apparatus for resistance heating of electrically conductive workpieces |
| 11/01/1977 | US4056412 Quenching |
| 11/01/1977 | US4056351 Workpiece-engaging element for furnaces |
| 11/01/1977 | US4056350 Support rail arrangement |
| 10/25/1977 | US4055446 Cyanide, cyanate |
| 10/25/1977 | US4055333 Apparatus for heat treating work |
| 10/18/1977 | US4054044 Seals for the passage of wire between regions of different pressure |
| 10/04/1977 | US4052235 Method of preventing oxidation during water quenching of steel strip |
| 09/27/1977 | US4050963 Method of quenching large-diameter thin-wall metal pipe |
| 09/27/1977 | US4050959 Process of making a high strength cold reduced steel sheet having high bake-hardenability and excellent non-aging property |
| 09/20/1977 | US4049473 Methods for carburizing steel parts |
| 09/20/1977 | US4049472 Atmosphere compositions and methods of using same for surface treating ferrous metals |
| 09/20/1977 | US4049012 Method and device for measuring and keeping constant the water content in a salt bath |
| 09/13/1977 | US4048458 Induction heating core structure and method of heating |
| 09/13/1977 | US4047985 Method and apparatus for symmetrically cooling heated workpieces |
| 09/13/1977 | US4047984 Corpuscular energy beam produced microasperities |
| 09/06/1977 | US4046598 Procedure for manufacture of steel band or strip |
| 08/23/1977 | US4043847 Hardening process for crankshafts |
| 08/23/1977 | US4043384 Spray apparatus for continuous casting machine |
| 08/23/1977 | US4043170 Patenting process and apparatus combined with a wire |
| 08/16/1977 | US4042425 Supression of graphite formation |
| 08/16/1977 | US4042227 Method and apparatus for continuously homogenizing and quenching aluminum billets |
| 08/09/1977 | US4040688 Hot rolled sorbitic carbon steel wire |
| 08/09/1977 | US4040514 Lifting beam cooling and conveying bed |
| 08/02/1977 | US4039148 Conveying device for long articles within heat treatment furnaces |
| 07/26/1977 | US4038109 Three phase heat treatment of steel sheet |
| 07/19/1977 | US4037044 Power control system for single phase induction melting or heating furnace |
| 07/19/1977 | US4036670 Protective coating, heating |
| 07/19/1977 | US4036482 Apparatus for hardening workpieces of steel |
| 07/19/1977 | US4036478 Liquid quenching system |
| 07/12/1977 | US4035312 Heat shield composition |
| 07/12/1977 | US4035203 Method for the heat-treatment of steel and for the control of said treatment |
| 07/12/1977 | US4035141 Support rail for furnaces |
| 07/05/1977 | US4033795 Method for inducing uniaxial magnetic anisotropy in an amorphous ferromagnetic alloy |
| 07/05/1977 | US4033737 Method of cooling a steel material without deformation |
| 06/28/1977 | US4032740 Two-level temperature control for induction heating |
| 06/28/1977 | US4032368 Hypoeutectoid steel |
| 06/28/1977 | US4032366 Grain-oriented silicon steel and processing therefor |
| 06/28/1977 | US4032365 Controlling the temperature of the slug |
| 06/28/1977 | US4031946 Method and apparatus for changing the secondary cooling during continuous casting of steel |
| 06/21/1977 | US4030947 Heating treatment method and system of utilizing same |
| 06/21/1977 | US4030712 Method and apparatus for circulating a heat treating gas |
| 06/21/1977 | US4030711 Method and apparatus for the surface hardening of the inner surface of tube bends |
| 06/07/1977 | US4028100 Heat treating atmospheres |
| 05/31/1977 | USRE29240 As-worked, heat treated cold-workable hypoeutectoid steel |