Patents by Inventor Adriaan Herman Hubert VAN Abel

Adriaan Herman Hubert VAN Abel 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).

  • Method of automatically transferring and injecting a liquid sample
    Patent number: 3981200
    Abstract: A method of transferring and injecting a liquid sample, by supplying an inert gas to an injection needle after normal injection has taken place by the action of a plunger. The injection syringe is constructed to allow the inert gas to pass freely even when the needle is fully depressed, to remove any drop clinging to the tip or needle inner wall.
    Type: Grant
    Filed: August 29, 1975
    Date of Patent: September 21, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Richard Alexander George, Adriaan Herman Hubert VAN Abel