Patents by Inventor Robert Trasavage

Robert Trasavage 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).

  • Relief imaging liquids
    Patent number: 4291118
    Abstract: A method of relief imaging liquids, particularly in manufacturing circuit boards, by providing a film of liquid photopolymer, solidifying the liquid by chemical hardening using actinic light, then pattern exposing the solidified film to actinic light to differentially chemically condition the film and then removing the portions of the film not exposed to the patterened exposure of actinic light. Also the product produced by the method.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: September 22, 1981
    Assignee: W. R. Grace & Co.
    Inventors: Paul Boduch, Robert Trasavage