Patents by Inventor Peter W. Runstadler, Jr.

Peter W. Runstadler, Jr. 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 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.
  • Fluidized cell cultivation process
    Patent number: 4978616
    Abstract: A fluidized bed reactor and reaction process, particularly well-suited for culturing cells, for example, for tissue culture and fermentation processes, are described which involve the treatment of at least a portion of the fluid exiting the fluidized bed reactor in a side loop in a manner to alter its temperature or composition, e.g., oxygenation, with recirculation of this treated fluid to the reactor as a portion of the fluid causing bed fluidization.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: December 18, 1990
    Assignee: Verax Corporation
    Inventors: Robert C. Dean, Jr., Peter V. Grela, Subhash B. Karkare, 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.