Patents by Inventor Henry J. Chapin

Henry J. Chapin 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).

  • Austenitic-manganese steel
    Patent number: 4425169
    Abstract: Fine grained austenite achieved in (12%) manganese steel, without annealing, by a novel combination of carbon and aluminum.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: January 10, 1984
    Assignee: Abex Corporation
    Inventors: Dilip K. Subramanyam, Henry J. Chapin, Bruce A. Heyer
  • Castings
    Patent number: 4342593
    Abstract: Ferrous metal casting of manganese steel susceptible to austenization to develop minimum yield strength of about 75,000 psi and elongation of about 30% min. consisting essentially of:C--0.85Mn--14Si--0.6Cr--4Ni--3.6V--0.4balance essentially iron except for impurities.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: August 3, 1982
    Assignee: Abex Corporation
    Inventors: Hugo R. Larson, Howard S. Avery, Henry J. Chapin