Patents by Inventor Francis M. DiNuzzo

Francis M. DiNuzzo 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).

  • Apparatus and method for introducing solutes into a stream of carrier gas of a chromatograph
    Patent number: 4615226
    Abstract: A precise volume of sample liquid is injected by inserting a syringe into the vaporizing chamber of the injection assembly for a gas chromatograph by performing the entire injection including withdrawal of the syringe in such a short time that essentially none of the liquid is vaporized while in the needle.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: October 7, 1986
    Assignee: Hewlett-Packard Company
    Inventors: Francis M. DiNuzzo, James S. Fullemann