Patents by Inventor Colin Baldwin

Colin Baldwin 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).

  • Production of semiconductor devices
    Patent number: 4118523
    Abstract: A method of forming very small diameter holes in a flexible substrate by coating both sides of substrate with metal layers; etching layers and substrate at places where holes required, removing small ring of the metal layers surrounding holes to remove any overhang of metal; and plating walls of holes and providing electrical conduction with said layers.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: October 3, 1978
    Assignee: International Computers Limited
    Inventors: Kenneth Charles Arthur Bingham, Alan George Albert Gillingham, Colin Baldwin