Patents by Inventor Jean Doat

Jean Doat 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).

  • Ball joint
    Patent number: 4911482
    Abstract: The flexible ball joint is provided with a continuous ring mounted inside a casing and supported by an inner spherical surface of one of the segments of the casing and by a cylindrical portion of an end piece element. The respective contacting sides of the ring are concentric with the juxtaposed spherical and cylindrical surfaces, so that the ring is able to be slidably guided by those surfaces in response to an absorbing shock without losing the contact with the surfaces.
    Type: Grant
    Filed: January 5, 1989
    Date of Patent: March 27, 1990
    Assignee: ACC La Jonchere
    Inventor: Jean Doat
  • Preparation of concentrated extracts, for instance of coffee
    Patent number: 3986346
    Abstract: The preparation comprises the steps of freezing the water of an infusion into ice flakes or crystals, draining the resulting sherbet, injecting it under low pressure into a centrifuge, centrifuge draining it and forcing it out of the 'fuge under increased pressure. During each step, the liquid is collected. Finally, the liquid is thermally concentrated into a powder.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: October 19, 1976
    Inventor: Jean Doat