Patents by Inventor John Michael Legare

John Michael Legare 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).

  • Rubber seal for semi-dynamic applications
    Patent number: 6328316
    Abstract: This invention is directed to a seal for installation into an annular groove of dovetail configuration that has a mouth, two side walls depending from the mouth that extend away from each other and a base wall that is connected to the two side walls thereby forming the dovetail configuration.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: December 11, 2001
    Assignee: DuPont Dow Elastomers, L.L.C.
    Inventors: Shuzo Fukuhara, John Michael Legare
  • Fluorination of radiation crosslinked perfluoroelastomers
    Patent number: 5986012
    Abstract: This invention concerns a process for fluorinating a perfluoroelastomer which has previously been crosslinked by exposure to ionizing radiation. The resulting product has reduced outgassing. This makes perfluoroelastomer parts that have undergone the process particularly useful in clean rooms and for semiconductor manufacturing.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: November 16, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Michael Legare, Anestis Leonidas Logothetis
  • Perfluoroelastomer compositions
    Patent number: 5696189
    Abstract: Perfluoroelastomer compositions substantially free of elemental carbon, having selected metallic reinforcing filler and titanium dioxide, when cured, exhibit excellent performance characteristics in dry process semiconductor sealing applications.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: December 9, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John Michael Legare
  • High purity fluoroelastomer compositions
    Patent number: H1736
    Abstract: Fluoroelastomer compositions with minimal concentrations of extractable metal species exhibit excellent performance characteristics under conditions requiring exceptional purity.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: June 2, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Michael Legare, Eric William Thomas