Patents by Inventor Seiichi Kotani

Seiichi Kotani 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).

  • Hypoid ring gear for differentials and method of producing the same
    Patent number: 6711817
    Abstract: The invention is intended to reduce the installation cost and running cost, minimize the production cost and increase the tooth surface strength of hypoid teeth.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: March 30, 2004
    Inventor: Seiichi Kotani
  • Hypoid ring gear for differentials and method of producing the same
    Publication number: 20010005938
    Abstract: The invention is intended to reduce the installation cost and running cost, minimize the production cost and increase the tooth surface strength of hypoid teeth.
    Type: Application
    Filed: February 7, 2001
    Publication date: July 5, 2001
    Inventor: Seiichi Kotani