Patents by Inventor Martin A. Katz

Martin A. Katz 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).

  • Methods and compositions for topical delivery of retinoic acid
    Patent number: 5955109
    Abstract: Retinoic acid compositions intended for topical application are incorporated in novel formulations in which they are retained as impregnants inside the pores of porous solid particles or microspheres. The pores form a continuous network open to the exterior of the particles, permitting outward diffusion of the retinoic acid impregnant at a controlled rate depending on the pore size. The impregnated particles are prepared by impregnation of preformed particles with the retinoic acid.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: September 21, 1999
    Assignee: Advanced Polymer Systems, Inc.
    Inventors: Richard Won, Martin A. Katz, Chung H. Cheng, Sergio Nacht
  • Methods and compositions for topical delivery of benzoyl peroxide
    Patent number: 5879716
    Abstract: Benzoyl peroxide intended for topical application is incorporated in novel formulations in which it is retained as impregnants inside the pores of porous solid particles or microspheres. The pores form a continuous network open to the exterior of the particles, permitting outward diffusion of the benzoyl peroxide impregnant at a controlled rate depending on the pore size. The impregnated particles are prepared by impregnation of preformed particles with the benzoyl peroxide.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: March 9, 1999
    Assignee: Advanced Polymer Systems, Inc.
    Inventors: Martin A. Katz, Chung H. Cheng, Sergio Nacht
  • Ionic beads useful for controlled release and adsorption
    Patent number: 5871722
    Abstract: Ionic compositions comprise an active ingredient absorbed within a network of internal pores defined by a plurality of polymeric particles. The particles are preferably crosslinked polymeric beads having a diameter in the range from about 5 to 100 microns and a surface charge density from about 0.1 to 10 meq/qm hydrogen ion capacity. The active ingredients are released from the ionic polymer beads over time when orally administered, applied to a keratinic material, typically human skin or hair or otherwise delivered to a target environment. The use of a cationic charge promotes adhesion of the beads to the keratinic material.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: February 16, 1999
    Assignee: Advanced Polymer Systems, Inc.
    Inventors: Sergio Nacht, Richard Won, Martin A. Katz, Tai Cheng, Christine J.Y. Liau, Robert P. Eury, Michael Froix
  • Ionic beads for controlled release and adsorption
    Patent number: 5840293
    Abstract: Ionic compositions comprise an active ingredient absorbed within a network of internal pores defined by a plurality of polymeric particles. The particles are preferably crosslinked polymeric beads having a diameter in the range from about 5 to 100 microns and a surface charge density from about 0.1 to 10 meq/qm hydrogen ion capacity. The active ingredients are released from the ionic polymer beads over time when orally administered, applied to a keratinic material, typically human skin or hair or otherwise delivered to a target environment. The use of a cationic charge promotes adhesion of the beads to the keratinic material.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: November 24, 1998
    Assignee: Advanced Polymer Systems, Inc.
    Inventors: Sergio Nacht, Richard Won, Martin A. Katz, Tai Cheng, Christine J. Y. Liau, Robert P. Eury, Michael Froix
  • Guard for preventing automobile dents
    Patent number: D299819
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: February 14, 1989
    Assignee: Kraco Enterprises, Inc.
    Inventors: Martin A. Katz, Timothy L. Corsini