Patents by Inventor Erwin S. Gutsell, Jr.

Erwin S. Gutsell, Jr. 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).

  • Light sensitive diazo compound, composition and method of making the composition
    Patent number: 4737437
    Abstract: The specification discloses photosensitizers comprising esters of 1-oxo-2-diazo-naphthalene sulfonic acid and 4-benzyl-1,2,3-trihydroxybenzene, photo resists based thereon and methods for making the necessary intermediates and final products.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: April 12, 1988
    Assignee: East Shore Chemical Co.
    Inventors: Erwin S. Gutsell, Jr., Louis C. Cohen