Patents by Inventor Barry Woodfine

Barry Woodfine 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).

  • Polyester compositions
    Patent number: 6461698
    Abstract: The invention relates to a composition comprising from 20 to 70 parts by weight of poly[ethylene terephthalate] (PET), from 20 to 70 parts by weight of poly[ethylene naphthalate] (PEN) and from 10 to 33 parts by weight of poly[butylene terephthalate] (PBT), the total being 100 parts by weight, in the form of a polymer blend and/or copolymer.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: October 8, 2002
    Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)
    Inventors: Farideh Bassam, Michael David Thompson, Barry Woodfine
  • Nucleated pet/pen polyester compositions
    Patent number: 6414063
    Abstract: The application relates to a composition poly[ethylene terephthalate] (PET) and poly[ethylene naphthalate] (PEN), in the form of a polymer blend and/or copolymer, in which the PET:PEN mol ratio is from 20:80 to 80:20, and from 0.1 to 5.0 wt. %, based on the total weight of the composition, of a transition metal salt of a carboxylic acid.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: July 2, 2002
    Assignee: Kobe Steel, Ltd.
    Inventors: Farideh Bassam, Michael David Thompson, Barry Woodfine
  • Compositions of high density polyethylene and poly(ethylene naphthalate)
    Patent number: 6251490
    Abstract: The invention relates to a polymer blend comprising high density polyethylene (HDPE), poly(ethylene naphthalate) (PEN), and a non-functionalised ethylene copolymer. This polymer blend is useful in extrusion blow moulding to make articles such as bottles.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: June 26, 2001
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Barry Woodfine, Michael David Thompson
  • Biodegradable polyester with improved molding characteristics and its production
    Patent number: 5886093
    Abstract: The invention relates to a method for preparing a biodegradable aliphatic polyester, which comprises polymerization of a precursor of the polyester in the presence of a polyesterification catalyst in an amount of up to 0.1% by weight, based on the weight of the cyclic precursor, and a co-catalyst comprising glycerol or butyrolactone in a weight proportion of not more than three times that of the catalyst.The invention also relates to the use of the resulting biodegradable aliphatic polyester in polymer processing, such as injection molding or compression/press molding.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: March 23, 1999
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Martin Thomas Davies, Naseer Mohammed Qureshi, Barry Woodfine, Barry Keane
  • Polyimide and a method of preparing polyamide from tetracarboxylic dianhydride and diisocyanate
    Patent number: 5614607
    Abstract: The invention provides a method of preparing a polyimide by reacting together a dianhydride and a diisocyanate or equivalent, the polyimide having repeating units of the general formula (I): ##STR1## in which D is a group comprising one or more aromatic rings, to which the imide carbon atoms are directly bonded, andE is a group comprising one or more cycloaliphatic or aromatic rings, to which the imide nitrogen atoms are bonded directly or via an aliphatic group, provided that the imide nitrogen atoms are not bonded directly to an aromatic ring. Such polyimide is colourless or of low colour.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: March 25, 1997
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: John N. Hay, Barry Woodfine