Patents by Inventor James C. Weaver

James C. Weaver 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).

  • Phosphorus stabilized-polyester-polycarbonate molding compositions
    Patent number: 4088709
    Abstract: Disclosed is a composition comprised of an admixture of poly(tetramethylene terephthalate), bisphenol A polycarbonate and selected phosphorous compounds.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: May 9, 1978
    Assignee: Eastman Kodak Company
    Inventors: Robert W. Seymour, James C. Weaver, Theodore F. Gray, Jr.
  • Method and apparatus for measuring reactant concentrations and quantities
    Patent number: 3948731
    Abstract: A method and apparatus is provided for determining the concentration or quantity of substrate molecules by monitoring directly the concentration and/or the quantity of vaporous byproduct produced from the selective reaction of the molecule catalyzed with a known amount of an enzyme or a microorganism. The apparatus comprises a membrane permeable to the vaporous by-product, a known amount of microorganism or an enzyme immobilized adjacent to the membrane, means for introducing a liquid sample into contact with the microorganism or enzyme and means for measuring the amount of vaporous by-product passing through the membrane. A mass spectrometer located adjacent the membrane surface having the immobilized enzyme or microorganism is suitable for measuring the amount of vaporous by-product passing through the membrane.
    Type: Grant
    Filed: October 24, 1974
    Date of Patent: April 6, 1976
    Assignee: Massachusetts Institute of Technology
    Inventor: James C. Weaver