Patents by Inventor Richard L. De Villez

Richard L. De Villez 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).

  • Therapeutic compositions containing benzoyl peroxide
    Patent number: 5086075
    Abstract: A stable composition and method for cutaneous therapy, particularly for treatment of acne, dermatophyte infection, poison ivy reactions and body odor development. The composition includes benzoyl peroxide particles, water and a solvent for benzoyl peroxide which has a boiling point substantially greater than 100.degree. C. Evaporation of the water leaves a solvent-benzoyl peroxide solution particularly non-irritative and effective in activity against cutaneously abiding microorganisms and contactants characteristic of certain plants.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: February 4, 1992
    Assignee: Board of Regents, The University of Texas System
    Inventor: Richard L. De Villez
  • Therapeutic compositions containing benzoyl peroxide
    Patent number: 4923900
    Abstract: A stable composition and method for cutaneous therapy, particularly for treatment of acne, dermatophyte infection, poison ivy reactions and body odor development. The composition includes benzoyl peroxide particles, water and a solvent for benzoyl peroxide which has a boiling point substantially greater than 100.degree. C. Evaporation of the water leaves a solvent-benzoyl peroxide solution particularly non-irritative and effective in activity against cutaneously abiding microorganisms and contactants characteristic of certain plants.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: May 8, 1990
    Assignee: Board of Regents, The University of Texas System
    Inventor: Richard L. De Villez
  • Ozonide esters and topical compositions containing same
    Patent number: 4591602
    Abstract: A novel compound, and stable compositions thereof for the effective, nonirritating treatment of microbial colonization are disclosed. The compound is used for the topical treatment of affected areas as well as for control of certain diarrheas. The compound is the ozonide of the liquid wax jojoba oil. The ozonide material of the present invention has the ability to release nascent oxygen directly to locales to at least inhibit the microorganisms without the characteristic dryness and skin irritation associated with previous benzoyl peroxide treatments. The compositions are stable, in contrast to the limited shelf-stability of the previously used benzoyl peroxide formulation. This ozonide and products containing same have no tendency to become rancid, which is a problem with other ozonides.
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: May 27, 1986
    Assignee: James H. Brown
    Inventor: Richard L. De Villez
  • Moisture collecting chamber
    Patent number: 4398543
    Abstract: A moisture collecting chamber apparatus for testing skin by passing a standard gas over the skin area to be tested including a probe which engages the skin surface and a limit means to limit the engagement of the probe with the skin surface and provide a seal.
    Type: Grant
    Filed: February 11, 1981
    Date of Patent: August 16, 1983
    Inventors: Felix M. Sandlin, Richard L. De Villez, Jack D. Waller