Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Heat treatment for manufacturing spring steel excellent in high-temperature relaxation resistance

Heat treatment for manufacturing spring steel excellent in high-temperature relaxation resistance

US Patent 5294271 · Granted Mar 15, 1994

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method for controlling a speaker array to provide spatialized, localized, and bi2017
Method of making quenched and tempered steel pipe with high fatigue life2017
Semiconductor device, method for manufacturing semiconductor device and gas for 2010
Gas for plasma reaction, process for producing the same, and use thereof2010
2-oxabicyclo[3.3.0]octane compounds, process for producing the same, optical res2009
High-strength, high-permeability steel sheet for picture tube band and method of2009
Gas for plasma reaction and process for producing thereof2008
Gas for plasma reaction, process for producing the same, and use2008
Waste collecting box2005
Gas for plasma reaction and method for production thereof2005
Radial tire manufacturing method2003
Data transfer control method and system, data transfer control program file, and2003