Patents by Inventor Christopher I. Greaves

Christopher I. Greaves 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).

  • Method of manufacturing heat-weldable thermoplastic fittings
    Patent number: 4825534
    Abstract: Welding muffs for joining thermoplastic pipes are molded using a core in which are placed terminals supported by plastic posts which may be removable and/or frangible so that when the cores are withdrawn the plastic posts do not prevent withdrawal.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: May 2, 1989
    Assignee: Du Pont U.K. Ltd.
    Inventors: Peter White, Ronald A. Street, Christopher I. Greaves, Gordon Harrison