Patents by Inventor Stanley Kirkham

Stanley Kirkham 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).

  • Patent number: 6096804
    Abstract: A low-density polymer composition and use thereof in undersea flotation cables and the like, the composition comprising by volume based on the whole composition,(a) at least 30% of a polymer component consisting of (i) thermoplastic polyolefin elastomer of room temperature density less than 0.9 g/cc and/or (ii) thermoplastic olefin/(ester or acid) copolymer elastomer, and(b) at least 30% of micro-balls of room-temperature density less than 0.6 g/cc, at least 80%, preferably at least 90%, more preferably at least 95%, by weight, of the micro-balls having a maximum dimension less than 300 .mu.m, preferably less than 200 .mu.m.Preferred elastomers are metallocene-catalysed olefin copolymers of density 0.86-0.88 g/cc, and micro-balls of diameters 10-45, preferably 10-34, micrometers are advantageous in resisting pressures up to 50 MPa (5 km under sea).
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: August 1, 2000
    Assignee: Raychem Limited
    Inventors: Richard Harold Whiteley, Mark Sawyer, Stanley Kirkham