Patents by Inventor Rex E. Hall

Rex E. Hall 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).

  • Gelling ophthalmic compositions containing xanthan gum
    Patent number: 6261547
    Abstract: Ophthalmic drug delivery vehicles which are administrable as a liquid and which gel upon contact with the eye are disclosed. The vehicles contain xanthan gum and an ophthalmically acceptable anesthetic agent.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 17, 2001
    Assignee: Alcon Manufacturing, Ltd.
    Inventors: Rajan Bawa, Rex E. Hall, Bhagwati P. Kabra, James E. Teague, Gerald D. Cagle, Kerry L. Markwardt, Mandar V. Shah
  • Gelling ophthalmic compositions containing xanthan gum
    Patent number: 6174524
    Abstract: Ophthalmic drug delivery vehicles which are administrable as a liquid and which gel upon contact with the eyes are disclosed. The vehicles contain xanthan gum.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: January 16, 2001
    Assignee: Alcon Laboratories, Inc.
    Inventors: Rajan Bawa, Rex E. Hall, Bhagwati P. Kabra, James E. Teague