Patents Assigned to East Shore Chemical Co.
  • 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