Patents by Inventor Helen A. Biddiscombe

Helen A. Biddiscombe 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).

  • Polymeric films
    Patent number: 7553528
    Abstract: In-mold labelled, blow-molded articles formed from high density polyethylene, the labels being formed from biaxially oriented polypropylene based films having a shrinkage of at least 4% in both the machine and transverse directions as measured by the OPMA shrink test in which the film is suspended in an oven at 130° C. for a period of 10 minutes. The use of films with the specified shrinkage enables blistering and “orange peel” effects to be avoided when the blow-molding is carried out.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: June 30, 2009
    Assignee: Hoechst Trespaphan GmbH
    Inventor: Helen Biddiscombe
  • Polymeric films
    Patent number: 5972490
    Abstract: Biaxially oriented polyolefin films comprising a core layer of propylene polymer, an intermediate layer of a non-voided, substantially non-pigmented propylene polymer on the core layer, and an outer skin layer of a polyolefin including titanium dioxide as a pigment are disclosed. Such films have good gloss.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: October 26, 1999
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Allan J Crighton, Helen A Biddiscombe
  • Biaxially oriented polypropylene film
    Patent number: 5527601
    Abstract: Biaxially oriented polypropylene films having a core layer of voided polypropylene homopolymer with a layer of non-voided polypropylene homopolymer on one surface thereof and an outer, printable layer on the non-voided layer, the core layer and/or the said non-voided layer including titanium dioxide. Such films can be used to produce labels, for example with densities in the range 0.55 to 0.80 despite the presence of the titanium dioxide.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: June 18, 1996
    Assignee: Courtaulds Films (Holdings) Limited
    Inventors: Allan J. Crighton, Helen A. Biddiscombe, Didier Jupont