Patents by Inventor R. Collier

R. Collier 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).

  • Process for laminating a channeled photosensitive layer on an irregular surface
    Patent number: 3984244
    Abstract: A channeled photosensitive element and a process and apparatus for laminating the same are described. In particular, a substantially solid, photoresist-forming layer having grooves or channels therein is applied with pressure to a surface having raised areas, such as a printed circuit board without entrapping air bubbles.
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: October 5, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John R. Collier, Yvan P. Pilette