Patents by Inventor Philip D. Gressel

Philip D. Gressel 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).

  • Physiological tear compositions and methods for their preparation
    Patent number: 5403598
    Abstract: Non-preserved physiological tear compositions comprise the ionic components of normal human tear film in substantially the same amounts and proportions. Novel methods of preparation of these compositions and novel packaging allow the maintenance of the bicarbonate concentration in these compositions.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: April 4, 1995
    Assignee: Alcon Laboratories, Inc.
    Inventors: Robert E. Beck, Haresh G. Bhagat, Philip D. Gressel, Fred M. Killinger
  • Ophthalmic solution
    Patent number: 5209927
    Abstract: Disclosed is a liquid ophthalmic composition of unique rheological and lubricating properties comprising, inter alia, a polyanionic polymer for use as a long lasting artificial tear. Also disclosed is a method of treatment comprising topically administering the composition when indicated for relief of dry eye syndrome, foreign body sensation, burning, hyperemia, corneal staining, and the like.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: May 11, 1993
    Assignee: Alcon Laboratories, Inc.
    Inventors: Philip D. Gressel, Robert E. Roehrs, Robert G. Harris
  • Ophthalmic carboxy vinyl polymer gel for dry eye syndrome
    Patent number: 5075104
    Abstract: Disclosed is an ophthalmic gel composition of unique rheological and lubricating properties comprising, inter alia, a carboxy vinyl polymer (carbomer) for use as a long lasting artificial tear. Also disclosed is a method of treatment comprising totally administering the composition when indicated for relief of dry eye syndrom, foreign body sensation, burning, hyperemia, corneal straining, and the like.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: December 24, 1991
    Assignee: Alcon Laboratories, Inc.
    Inventors: Philip D. Gressel, Robert E. Roehrs
  • Topical ophthalmic compositions containing microfine retinoid particles
    Patent number: 4966773
    Abstract: Topical ophthalmic compositions containing microfine particles of one or more retinoids are described. The compositions are useful in the treatment of dry eye syndrome and related ophthalmic surface disorders and as ocular lubricants. A method of treating dry eye syndrome and related ophthalmic surface disorders and a method of providing topical ocular lubrication using these compositions are also described.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: October 30, 1990
    Assignee: Alcon Laboratories, Inc.
    Inventors: Philip D. Gressel, Robert E. Roehrs, John L. Ubels, Henry F. Edelhauser
  • Topical ophthalmic compositions containing one or more retinoids
    Patent number: 4826871
    Abstract: Topical ophthalmic compositions containing one or more retinoids selected from the group consisting of near and remote analogues and derivatives of retinoic acid are described. Six classes of ophthalmic vehicles suitable as carriers for the retinoids are also described. The compositions are useful in the treatment of dry eye syndrome and related ophthalmic surface disorders and as ocular lubricants. A method of treating dry eye syndrome and related ophthalmic surface disorders and a method of providing topical ocular lubrication using these compositions are also described.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: May 2, 1989
    Inventors: Philip D. Gressel, Robert E. Roehrs, John L. Ubels, Henry F. Edelhauser