Patents by Inventor Matthew J. Schaeffer

Matthew J. Schaeffer 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).

  • Flammable vapor analyzer
    Patent number: 5053200
    Abstract: An apparatus is provided for the analysis of flammable vapors in an industrial application, such as a solvent drying operation or the like. The apparatus continuously withdraws and returns a sample of gas from the process, separates the sample into a primary portion and a secondary test portion, tests the flammability of the test portion and recombines the test portion with the primary sample, which has been restricted to create a pressure differential enabling the flow of the test portion through the testing procedure.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: October 1, 1991
    Inventors: Matthew J. Schaeffer, Christopher G. Schaeffer