| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 04/13/1976 | US3950192 Hydrocarbon gas |
| 04/06/1976 | US3948428 Device for cooling welds |
| 03/30/1976 | US3947244 Heap pipe vacuum furnace |
| 03/30/1976 | US3946797 Arrangement for cooling and supporting a continuously cast metal strand |
| 03/23/1976 | US3945862 Coated ferrous substrates comprising an amorphous magnesia-silica complex |
| 03/23/1976 | US3945623 Device for cooling metal wire |
| 03/23/1976 | US3945513 Gravity discharge furnace for heating production parts |
| 03/23/1976 | US3945483 Device for treating production parts, especially for inductive hardening of the parts |
| 03/23/1976 | US3945424 Method of straightening a continuously cast strand |
| 03/16/1976 | US3944782 Isothermal metal forming |
| 03/16/1976 | US3944446 Method of inductively heating and quench hardening camshafts |
| 03/16/1976 | US3944443 Ultra high temperature chemical reactions with metals |
| 03/02/1976 | US3941623 Method for producing a grain-oriented electrical steel sheet using separators comprising metal nitrides |
| 03/02/1976 | US3941621 Coatings for ferrous substrates |
| 03/02/1976 | US3941160 Interlocking ceramic tile for covering an insulated water cooled pipe structure |
| 02/24/1976 | USRE28719 Method of making flat steel files |
| 02/24/1976 | US3940294 Cooling of hot rolled steel stock |
| 02/24/1976 | US3940293 Method of producing amorphous cutting blades |
| 02/17/1976 | US3939296 Annealing furnace base plate supports |
| 02/17/1976 | US3939016 Potassium polyacrylate and the sodium or potassium salt of a copylmer of acrylic and methacrylic acid |
| 02/17/1976 | US3939015 In-line heat treatment of hot-rolled rod |
| 02/10/1976 | US3937639 Process for the bright annealing and recrystallization of non-ferrous metals |
| 02/10/1976 | US3937448 Apparatus for hardening steel pipes |
| 02/03/1976 | US3936583 Prevention of corrosion in metals |
| 02/03/1976 | US3936543 Method of coating carbon steel |
| 02/03/1976 | US3936324 Carbon-silicon-manganese-iron alloy |
| 01/27/1976 | US3935413 Apparatus for stress relieving springs and the like |
| 01/20/1976 | US3933534 Continuous heat treating process for low carbon structural steels in bar form |
| 01/20/1976 | US3933532 Method for exposing surface defects on hot steel blanks |
| 01/13/1976 | US3932238 Method and apparatus for quenching pipe |
| 01/13/1976 | US3932202 Magnesia coatings for ferrous substrates comprising amorphous magnesia-silica complexes |
| 01/13/1976 | US3932201 Silicon-containing steel, zinc permanganate magnesium sulfate |
| 01/13/1976 | US3931848 Method and apparatus for cooling a strand cast in an oscillating mold during continuous casting of metals, especially steel |
| 01/06/1976 | US3930906 Method for forming an insulating glass film on a grain-oriented silicon steel sheet having a high magnetic induction |
| 01/06/1976 | US3930900 Process for cooling hot rolled steel rod |