Patents by Inventor Gerard Janin

Gerard Janin 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 measuring the size of fibers
    Patent number: 4266874
    Abstract: In an apparatus for measuring the sizes of fibers, said fibers are diluted into a carrier liquid in a container. The liquid is circulated by means of a pump in a main pipe through a chamber in which a vortex flow exists. A part of the liquid in the chamber is derivated through a small diameter pipe towards a photo-electric analyzing equipment.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: May 12, 1981
    Assignee: Institut National de la Recherche Agronomique
    Inventors: Gerard Janin, Jean-Marie Ory