Patents by Inventor Kohsaburo Harada

Kohsaburo Harada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Heat resisting alloys
    Patent number: 3993475
    Abstract: A new alloy is provided having high creep strength at elevated temperatures in the range 1100.degree. to 1200.degree. C. and which is unusually resistant to corrosion and thermal shock and has unusual stress rupture characteristics at the elevated temperatures here involved consisting essentially of, by weight, about 0.3% to 0.9% carbon, 20% to 30% chromium, 26% to 40% nickel, 0.8% to 4.0% manganese, 0.9% to 3.5% silicon, 0.3% to 5.0% tungsten, 3.5% to 8.5% cobalt and the balance iron with residual impurities in ordinary amounts.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: November 23, 1976
    Assignee: Duraloy Blaw-Knox, Inc.
    Inventors: Kohsaburo Harada, Yousuke Matsumoto, Rokurou Kiyoshima