Heating Or Cooling Of Solid Metal Patents (Class 148/559)
Electric heating with work as conductor (e.g., alternating current, induction, etc.) (Class 148/566)
- Spring or spring material (Class 148/580)
- Railway stock (e.g., rails, wheels, axles, etc.) (Class 148/581)
- Gear (Class 148/586)
- Threaded article (e.g., screws, drill bits, etc.) (Class 148/587)
- Serrated work surface (e.g., saw blades, etc.) (Class 148/588)
- Ring (Class 148/589)
- Pipe or tube (Class 148/590)
- Wire, rod, or filament (Class 148/595)
- With coiling or treating of coiled strip (Class 148/601)
- Of stacked plural workpieces (Class 148/604)
- Nine percent or more chromium(Cr) (e.g., Stainless steel, etc.) (Class 148/605)
- Starting material contains 1.7 percent or more carbon (e.g., cast iron, etc.) (Class 148/612)
- Containing 10 percent or more manganese(Mn) (e.g., Hadfield steel, etc.) (Class 148/619)
- Highly alloyed (i.e., greater than 10 percent alloying elements) (Class 148/621)
- Ageing, solution treating (i.e., for hardening), precipitation hardening or strengthening (Class 148/622)
- Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent, denitriding agent, etc.) or vacuum (Class 148/625)
- Localized or zone heating or cooling (Class 148/639)
- With flattening, straightening, or tensioning by external force (Class 148/645)
- With restraining of metal from expanding or contracting during heating or cooling (Class 148/646)
- With working (Class 148/648)
- With separate handling or treating of air, water, or unspecified fluid treating media (Class 148/655)
- Work handling (Class 148/656)
- Including spheroidizing (Class 148/659)
- Including cooling (e.g., quenching, etc.) (Class 148/660)
- With working above 400C or nonspecified hot working (Class 148/680)
- With working (Class 148/684)
- With ageing, solution treating (i.e., for hardening), precipitation hardening or strengthening (Class 148/686)
- Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent or denitriding agent, etc.) or vacuum (Class 148/687)
- With extruding or drawing (Class 148/689)
- With working above 400C or nonspecified hot working (Class 148/691)
- With working (Class 148/695)
- With ageing, solution treating (i.e., for hardening), precipitation hardening or strengthening (Class 148/698)
- Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent, denitriding agent, etc.) or vacuum (Class 148/703)