Patents by Inventor Edmund B. Davidson

Edmund B. Davidson 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).

  • Water based photoresist
    Patent number: 4194912
    Abstract: A positive-acting water-based photoresist comprising a polyethylene imine, a dichromate sensitizer and the balance water.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: March 25, 1980
    Assignee: RCA Corporation
    Inventor: Edmund B. Davidson