Patents by Inventor William R. Frenchu

William R. Frenchu 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).

  • Device for multisample infrared analysis of materials in microgram quantity
    Patent number: 4399361
    Abstract: A sampling device adapted for mounting on a conventional microsampling apparatus for infrared spectroscopy is arranged to sample a plurality of different samples of unknown material during one operation. The device supports by a clamp an IR-transparent substrate on which solutions of samples are deposited. After evaporation of the solvent, the residue of unknown material is analyzed by conventional spectroscopy procedures. Each of the plurality of such samples deposited on the substrate are manually rotated into and out of exposure to the IR beam of the apparatus for rapid analysis.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: August 16, 1983
    Assignee: RCA Corporation
    Inventors: Peter J. Zanzucchi, William R. Frenchu