Patents by Inventor Eric P. Marsden

Eric P. Marsden 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).

  • Electrically insulated wire
    Patent number: 4877467
    Abstract: Electrically insulated wire with an inner layer of non-crosslinked and non-crosslinkable polymeric material and a skin layer of irradiation crosslinked material compatible with the inner layer. The inner layer provides desirable flexibility and electrical insulating properties suitable for telecommunications cable and appliance wiring. The skin layer gives abrasion resistance suitable for the above purpose and heat resistance and fire retardance properties suitable for building wiring. The polymeric material of both layers is preferably of a polyvinylchloride composition.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: October 31, 1989
    Assignee: Northern Telecom Limited
    Inventors: Eric P. Marsden, John A. Checkland
  • Electrically insulated wire
    Patent number: 4869959
    Abstract: Electrically insulated wire with an inner layer of non-crosslinked and non-crosslinkable polymeric material and a skin layer of irradiation crosslinked material compatible with the inner layer. The inner layer provides desirable flexibility and electrical insulating properties suitable for telecommunications cable and appliance wiring. The skin layer gives abrasion resistance suitable for the above purpose and heat resistance and fire retardance properties suitable for building wiring. The polymeric material of both layers is preferably of a polyvinylchloride composition.
    Type: Grant
    Filed: May 14, 1981
    Date of Patent: September 26, 1989
    Assignee: Northern Telecom Limited
    Inventors: Eric P. Marsden, John A. Checkland