Patents by Inventor Katrin Wellner

Katrin Wellner 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).

  • Stable topical formulations with good active ingredient release characteristics, containing at least one lipophilized macrolide antibiotic
    Patent number: 5559098
    Abstract: A stable topical formulation with good active ingredient release characteristics, comprising at least one macrolide antibiotic which is lipophilized with at least one former of oppositely charged ions which is selected from the group consisting of alkyl sulfates, alkylsulfonates, and alkyl salicylates, RX, where R represents a linear and/or branched alkyl group with 6-32 C atoms, and X represents a sulfate, sulfonate, or salicylate group.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: September 24, 1996
    Assignee: Roehm Pharma GmbH
    Inventors: Wolfgang A. Wohlrab, Reinhard Neubert, Sybille Matschiner, Katrin Wellner
  • Stable topical formulations with good active ingredient release characteristics, containing at least one lipophilized macrolide antibiotic
    Patent number: 5476843
    Abstract: A stable topical formulation with good active ingredient release characteristics, comprising at least one macrolide antibiotic which is lipophilized with at least one former of oppositely charged ions which is selected from the group consisting of alkyl sulfates, alkylsulfonates, and alkyl salicylates, RX, where R represents a linear and/or branched alkyl group with 6-32 C atoms, and X represents a sulfate, sulfonate, or salicylate group.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: December 19, 1995
    Assignee: Roehm Pharma GmbH
    Inventors: Wolfgang A. Wohlrab, Reinhard Neubert, Sabine Matschiner, Katrin Wellner
  • Nail lacquer for the treatment of onychomycosis
    Patent number: 5346692
    Abstract: The invention relates to a nail lacquer for treating onychomycosis, comprised of a film-forming agent, an antimycotically active substance, and urea, wherewith the antimycotically active substance and the urea are liberated from the lacquer when the lacquer is applied. A preferred formulation comprises cellulose derivative(s) as film former(s), clotrimazole as the antimycotic (present in the amount of 5-30 wt. % based on the weight of the non-volatile components), urea (present in the amount of 15-60 wt. % based on the weight of the non-volatile components), and dibutyl phthalate as a plasticizer, in a solvent mixture comprised of acetone and ethanol.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: September 13, 1994
    Assignee: Roehm Pharma GmbH
    Inventors: Wolfgang Wohlrab, Katrin Wellner