Patents by Inventor Philip G. Phillips

Philip G. Phillips 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).

  • Weighted microsponge for immobilizing bioactive material
    Patent number: 5100783
    Abstract: Weighted microsponges formed of a porous, biostable matrix of a biocompatible polymer containing an inert weighing material are prepared suitable for use in culturing organisms in motive reactor systems. The matrix has an open to the surface pore structure with an average pore size in the range of from about 1 to about 150 microns and the pores occupy from about 70 to about 98% by volume of the microsponge. The microsponges have an average particle size of from about 100 to about 1000 microns and a specific gravity of above about 1.05. Biocompatible polymers that can be used are polysaccharides, proteins and synthetic polymers and the weighing material can be metals, metal alloys, metal oxides or ceramics.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: March 31, 1992
    Assignee: Verax Corporation
    Inventors: Robert C. Dean, Jr., Frederick Cahn, Philip G. Phillips
  • Weighted collagen microsponge for immobilizing bioactive material
    Patent number: 4997753
    Abstract: Weighted collagen microsponges having a highly crosslinked collagen matrix are described suitable for use in culturing organisms in motive reactor systems. The microsponges have an open to the surface pore structure, and pore sizes and volumes suitable for immobilizing a variety of bioactive materials. The microsponges also have an average particle size in the range of about 100 to about 1000 microns and a specific gravity above about 1.05.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: March 5, 1991
    Assignee: Verax Corporation
    Inventors: Robert C. Dean, Jr., Frederick H. Silver, Richard A. Berg, Philip G. Phillips, Peter W. Runstadler, Jr.
  • Weighted collagen microsponge for immobilizing bioactive materials
    Patent number: 4863856
    Abstract: Weighted collagen microsponges having a highly crosslinked collagen matrix are described suitable for use in culturing organisms in motive reactor systems. The microsponges have an open to the surface pore structure, and pore sizes and volumes suitable for immobilizing a variety of bioactive materials. The microsponges also have an average particle size in the range of about 100 to about 1000 microns and a specific gravity above about 1.05.
    Type: Grant
    Filed: November 18, 1986
    Date of Patent: September 5, 1989
    Assignee: Verax Corporation
    Inventors: Robert C. Dean, Jr., Frederick H. Silver, Richard A. Berg, Philip G. Phillips, Peter W. Runstadler, Jr., Gennaro J. Maffia
  • Weighted collagen microsponge for immobilizing bioactive material
    Patent number: 4861714
    Abstract: Weighted collagen microsponges having a highly crosslinked collagen matrix are described suitable for use in culturing organisms in motive reactor systems. The microsponges have an open to the surface pore structure, and pore sizes and volumes suitable for immobilizing a variety of bioactive materials. The microsponges also have an average particle size in the range of about 100 to about 1000 microns and a specific gravity above about 1.05.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: August 29, 1989
    Assignee: Verax Corporation
    Inventors: Robert C. Dean, Jr., Frederick H. Silver, Richard A. Berg, Philip G. Phillips, Peter W. Runstadler, Jr.