Patents by Inventor Evan P. Kyba

Evan P. Kyba 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).

  • Polymeric quaternary ammonium compounds and their use as ophthalmic antimicrobias
    Patent number: 6051611
    Abstract: The invention relates to polymeric quaternary ammonium compounds which are useful as disinfectants and/or preservatives in ophthalmic compostions.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: April 18, 2000
    Assignee: Alcon Laboratories, Inc.
    Inventors: Evan P. Kyba, Joonsup Park
  • Absolute molecular weight polymers and methods for their use
    Patent number: 5547663
    Abstract: A process for preparing defined molecular weight polymers, particularly polyquaternary ammonium compounds, is disclosed. As the molecular weights of these compounds can be absolutely defined, rather than defined merely in terms of "number average molecular weight," these compounds are particularly useful as identification standards for other polymers which are made using conventional polymerization processes. The polyquaternary ammonium compounds described are further suitable for use as antimicrobial agents, particularly in ophthalmic compositions.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: August 20, 1996
    Assignee: Alcon Laboratories, Inc.
    Inventors: Edward C. Holloman, Evan P. Kyba, Joon S. Park
  • Polymeric quaternary ammonium compounds and their use as ophthalmic antimicrobials
    Patent number: 5512597
    Abstract: The invention relates to polymeric quaternary ammonium compounds which are useful as disinfectants and/or preservatives in ophthalmic compositions.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: April 30, 1996
    Assignee: Alcon Laboratories, Inc.
    Inventors: Evan P. Kyba, Joon S. Park
  • B.sub.2 adrenegic agonists and use thereof in the treatment of glaucoma
    Patent number: 5314916
    Abstract: Compounds having beta-2 adrenergic agonist activity and the use of these compounds in controlling intraocular pressure are disclosed. The compounds are believed to be useful in controlling intraocular pressure by increasing the outflow of aqueous humor. The compounds are considered to be less likely to cause cardiovascular side effects and various other side effects associated with stimulation of beta-1 receptors, relative to epinephrine.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: May 24, 1994
    Assignee: Alcon Laboratories, Inc.
    Inventors: Billie M. York, Evan P. Kyba