Patents Assigned to Ketchum & Co. Inc.
  • Imidazolidinyl urea and derivatives thereof for use in opthalmic solutions
    Patent number: 4539330
    Abstract: Anti-bacterial properties are imparted to a broad spectrum of ophthalmically active compositions by the inclusion therein of a urea derivative.
    Type: Grant
    Filed: October 24, 1984
    Date of Patent: September 3, 1985
    Assignee: Ketchum & Co. Inc.
    Inventors: Seymour F. Trager, Victoria S. Chylinski