Patents by Inventor Russell C. Eidal

Russell C. Eidal 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).

  • Backup material for small bore drilling
    Patent number: 4643936
    Abstract: A backup material for small bore drilling in hard crystalline materials, such as multilayer circuit boards containing polyimide/glass, polyimide kevlar or modified epoxy BT/glass, includes at least one layer of hard crystalline material. Standard LCOA material with an additional layer selected from the group comprising polyimides, fluorocarbons and high temperature polycarbonates has proven successful.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: February 17, 1987
    Assignee: Control Data Corporation
    Inventor: Russell C. Eidal
  • Backup material for small bore drilling
    Patent number: RE32759
    Abstract: A backup material for small bore drilling in hard .[.crystalline.]. materials, such as multilayer circuit boards containing polyimide/glass, polyimide kevlar or modified epoxy BT/glass, includes at least one layer of hard crystalline material. Standard LCOA material with an additional layer selected from the group comprising polyimides, fluorocarbons and high temperature polycarbonates has proven successful.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: October 4, 1988
    Assignee: Control Data Corporation
    Inventor: Russell C. Eidal