Patents by Inventor Les Kastura

Les Kastura 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).

  • Low density, nonmagnetic and corrosion resistant cemented carbides
    Patent number: 5736658
    Abstract: A resilient and corrosion and wear resistant component of tooling preferably used in the deep-drawing of aluminum and steel cans is disclosed. The tooling is comprised of a distinctive nickel-bonded cemented carbide having a density less than 13 grams per cubic centimeter, a hardness of at least 88 R.sub.a, a minimum transverse rupture strength of 250,000 p.s.i. and exhibiting essentially non-magnetic behavior. Preferred compositions for the material of the tooling are also given.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: April 7, 1998
    Assignee: Valenite Inc.
    Inventors: Prakash K. Mirchandani, Les Kastura