Patents by Inventor Ralph A. Boettcher

Ralph A. Boettcher 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).

  • Method and article for facilitating the manufacture of a bondable metallic surface
    Patent number: 4531566
    Abstract: A pad eliminatable by heat prior to casting has a patterned surface and a non-porous backing. The pad is sized and shaped into at least part of the appliance and the patterned surface is conformed to the desired bonding surface contour. The patterned surface yields irregularities in the cast bonding surface which increases bondability.
    Type: Grant
    Filed: April 6, 1984
    Date of Patent: July 30, 1985
    Assignee: Unitek Corporation
    Inventor: Ralph A. Boettcher
  • Method for facilitating the manufacture of a bondable metallic surface
    Patent number: 4479527
    Abstract: A pad eliminatable by heat prior to casting has a patterned surface and a non-porous backing. The pad is sized and shaped into at least part of the appliance and the patterned surface is conformed to the desired bonding surface contour. The patterned surface yields irregularities in the cast bonding surface which increases bondability.
    Type: Grant
    Filed: November 2, 1982
    Date of Patent: October 30, 1984
    Assignee: Unitek Corporation
    Inventor: Ralph A. Boettcher