Patents by Inventor Colin W. Haase

Colin W. Haase 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).

  • Gasket for sanitary fittings
    Patent number: 6857638
    Abstract: A gasket for establishing a seal between the flanges of sanitary pipe fittings having a lumen of pre-determined diameter which comprises an O-ring portion of elastomeric material and an incompressible ring member bonded to said O-ring portion, said ring member having a substantially flat cross-section to limit compression of the O-ring.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: February 22, 2005
    Assignee: Rubber Fab, Inc.
    Inventors: Paul Robert Dupont, Colin W. Haase
  • Gasket for sanitary fittings
    Publication number: 20040160018
    Abstract: A gasket for establishing a seal between the flanges of sanitary pipe fittings having a lumen of pre-determined diameter which comprises an O-ring portion of elastomeric material and an incompressible ring member bonded to said O-ring portion, said ring member having a substantially flat cross-section to limit compression of the O-ring.
    Type: Application
    Filed: February 14, 2003
    Publication date: August 19, 2004
    Inventors: Paul Robert Dupont, Colin W. Haase