Patents by Inventor Paul V. Comeau

Paul V. Comeau 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).

  • Plastic hydrometer
    Patent number: 4993263
    Abstract: A plastic hydrometer of the constant mass variable displacement type. The hydrometer includes a separate bulbous section, stem and cap. The bulbous section is a single piece molded part having an upper end which mates with the lower end of the extruded tube.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: February 19, 1991
    Assignee: Nalge Company
    Inventors: Ravinder C. Mehra, Paul V. Comeau
  • Centrifuge tube
    Patent number: 4902270
    Abstract: A centrifuge tube assembly comprising a centrifuge tube and an inserter for placement within the neck portion of the centrifuge tube. The insert has a rigid portion and pliable portion.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: February 20, 1990
    Assignee: Nalge Company
    Inventors: Paul V. Comeau, Richard A. Leoncavallo
  • Cryogenic vial
    Patent number: D310264
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: August 28, 1990
    Assignee: Nalge Company
    Inventors: Richard A. Leoncavallo, Paul V. Comeau