Patents by Inventor Denis Douchet

Denis Douchet 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).

  • Fiber with reusable shell and center tube
    Patent number: 5868932
    Abstract: A filter and filtering cartridge with a removable center tube, for the filtering of fluids. The invention relates to a filter for circulating fluid of the type consisting of a filtering cartridge inserted in an outer shell, with the outer shell being intended to be removably connected to a base. The outer shell cooperates with an independent and removable center tube. A filtering cartridge is mounted in the outer shell around the independent and removable center tube which extends longitudinally inside said outer shell over at least a substantial part of the length of the outer shell. The filtering cartridge is longitudinally restrained inside said outer shell in part by the removable center tube.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: February 9, 1999
    Assignee: Fleetguard, Inc.
    Inventors: Jean-Luc Guichaoua, Denis Douchet