Patents by Inventor Robert C. Dean, Jr.

Robert C. Dean, 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: 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.
  • Ocular plethysmograph
    Patent number: 4141346
    Abstract: An improved ocular plethysmograph for use in conjunction with known pulse volume recorders, and offering increased performance and simplicity as well as lower cost of manufacture. The device employs a means whereby a large DC pressure signal is cancelled across a very sensitive DC pressure transducer employed to detect directly the tiny pressure fluctuations resulting from minute volume plethysmic changes of the human ocular globe. The means employed provides secondary advantages in use.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: February 27, 1979
    Assignee: Life Sciences, Inc.
    Inventors: Robert C. Dean, Jr., Paul A. Hoisington, Brian F. Walsh, Frank E. Mastro