Patents by Inventor Raymond L. Stark

Raymond L. Stark 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).

  • Aqueous antimicrobial ophthalmic solutions
    Patent number: 4525346
    Abstract: This invention relates to ophthalmic compositions which comprise quaternary ammonium salt having the formula ##STR1## wherein X=a pharmaceutically acceptable anion, such compositions providing aqueous disinfecting solutions for contact lenses as well as a preserved ocular compositions including contact lens treating solutions comfort drop solutions, preserved saline solutions, ointments and other ocular medicaments.
    Type: Grant
    Filed: September 29, 1983
    Date of Patent: June 25, 1985
    Assignee: Alcon Laboratories, Inc.
    Inventor: Raymond L. Stark
  • Ophthalmic solutions
    Patent number: 4407791
    Abstract: This invention relates to the quaternary ammonium salt, .alpha.-4-[-tris (2-hydroxyethyl) ammonium chloride-2-butenyl] poly[1-dimethyl ammonium chloride-2-butenyl]-w-tris (2-hydroxyethyl) ammonium chloride, providing aqueous disinfecting solutions for contact lenses as well as a preservative for ocular solutions including contact lens treating solutions.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: October 4, 1983
    Assignee: Alcon Laboratories, Inc.
    Inventor: Raymond L. Stark