Patents by Inventor Werner K. Stiefel

Werner K. Stiefel 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).

  • Topical compositions containing bensoyl peroxide and clindamycin and method of use thereof
    Patent number: 5466446
    Abstract: Dermatological conditions are treated by topically applying to the affected area an effective amount of a combination benzoyl peroxide and clindamycin composition.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: November 14, 1995
    Assignee: Stiefel Laboratories, Inc.
    Inventors: Werner K. Stiefel, Karl F. Popp
  • Topical biotin compositions and method of use
    Patent number: 5166168
    Abstract: Topical compositions of biotin or a pharmaceutically acceptable salt thereof are used in the treatment of ungual pathologies and to harden ungues in humans.
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: November 24, 1992
    Assignee: Stiefel Laboratories, Inc.
    Inventor: Werner K. Stiefel
  • Pharmaceutical compositions
    Patent number: 5017366
    Abstract: A topical pharmaceutical composition comprising a mixture of (i) at least one topically acceptable UV absorber in a concentration sufficient to block a substantial quantity of sun-generated UV radiation and (ii) an antibacterially effective amount of erythromycin in (iii) an pharmaceutically acceptable topical carrier. A typical formulation contains about 2.2% of erythromycin, about 8% of octyl p-dimethylaminobenzoate, and about 6% of 2-hydroxy-4-methoxybenzophenone in a mixture of about 3.8% hydroxypropylcellulose in ethanol.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: May 21, 1991
    Assignee: Stiefel Laboratories, Inc.
    Inventors: Werner K. Stiefel, Charles F. Breunig
  • Method of treating aged skin
    Patent number: 4957747
    Abstract: The firmness and tone of aged skin is improved by repeatedly applying a fluid topical composition containing a suspension of fine particles of a non-absorbable aluminum oxide abrasive in a topically acceptable aqueous base of sodium cocoisethionate, at least one emollient, and a suspending agent.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: September 18, 1990
    Assignee: Stiefel Laboratories, Inc.
    Inventor: Werner K. Stiefel
  • Treatment of acne
    Patent number: 4843096
    Abstract: Inflammatory acne is treated topically with a non-aqueous gel of 13-cis retinoic acid.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: June 27, 1989
    Assignee: Stiefel Laboratories, Inc.
    Inventor: Werner K. Stiefel
  • Topical collodion compositions
    Patent number: 4681635
    Abstract: The drying time of fluid collodion topical compositions can be decreased without significant increase in overall viscosity through the incorporation of D,L-lactic acid.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: July 21, 1987
    Assignee: Stiefel Laboratories, Inc.
    Inventors: Werner K. Stiefel, Charles F. Breunig
  • Compositions for the treatment of psoriasis
    Patent number: 4551480
    Abstract: A topical anthralin cream composition in which the anthralin demonstrates improved stability, comprises from about 0.05% to about 5% by weight of anthralin in a water: fluid hydrocarbon emulsion having a weight ratio of at least about 5:1, at least one anionic emulsifying agent, at least one oil soluble anti-oxidant, at least one water soluble acidic material, and at least one bifunctional sequestering agent.
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: November 5, 1985
    Assignee: Stiefel Laboratories, Inc.
    Inventors: Werner K. Stiefel, Daniel W. Nicolai
  • Skin treatment with emollient cis-6-hexadecenoic acid or derivatives
    Patent number: 4036991
    Abstract: A composition that may be used as the base vehicle for cosmetic or therapeutic preparations that are applied to the human skin contains as one of the essential constituents thereof at least one member of the group consisting of cis-6-hexadecenoic acid and the glycerol, glycol and monohydric alcohol esters of cis-6-hexadecenoic acid.
    Type: Grant
    Filed: January 24, 1972
    Date of Patent: July 19, 1977
    Assignee: Stiefel Laboratories, Inc.
    Inventor: Werner K. Stiefel