Patents by Inventor Steven Leigh

Steven Leigh 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).

  • Pharmaceutical compositions containing urea
    Patent number: 4291062
    Abstract: Pharmaceutical compositions for application topically or by suppository comprise:(a) a medicament, preferably protected from degradation by moisture by being presented in small particles of a waxy material,(b) from 5% to 40% of an inclusion compound of urea with a straight-chain aliphatic compound, preferably a fatty acid or alcohol,(c) up to 50% of an inert insoluble powder such as starch,(d) from 25% to 90% of an inert carrier, components (a), (b) and (c) being dispersed in (d).The compositions have good storage stability and a smooth texture.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: September 22, 1981
    Assignee: Phares Pharmaceutical Research N.V.
    Inventors: Steven Leigh, Peter J. Ayres
  • Pharmaceutical skin compositions
    Patent number: 3981996
    Abstract: A novel drug delivery system in the form of a skin cream comprises a continuous hydrophobic medium in which there is dispersed an inert water-insoluble powder, the particles of which carry absorbed thereon an aqueous solution or dispersion of a medicament. Improved percutaneous transportation of medicaments by the system is claimed.
    Type: Grant
    Filed: June 20, 1974
    Date of Patent: September 21, 1976
    Assignee: Vymatt S.A.
    Inventor: Steven Leigh
  • Pharmaceutical compositions containing urea
    Patent number: RE32161
    Abstract: Pharmaceutical compositions for application topically or by suppository comprise:(a) a medicament, preferably protected from degradation by moisture by being presented in small particles of a waxy material,(b) from 5% to 40% of an inclusion compound of urea with a straight-chain aliphatic compound, preferably a fatty acid or alcohol,(c) up to 50% of an inert insoluble powder such as starch,(d) from 25% to 90% of an inert carrier, components (a), (b) and (c) being dispersed in (d).The compositions have good storage stability and a smooth texture.
    Type: Grant
    Filed: September 21, 1983
    Date of Patent: May 27, 1986
    Assignee: Phares Pharmecutical Research N.V.
    Inventors: Steven Leigh, Peter J. Ayres