Patents by Inventor Derek Samuel David Norwood

Derek Samuel David Norwood 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).

  • Defatting collagen
    Patent number: 7906623
    Abstract: Pig rind is one source of collagen for processing into products, such as sausage casings and films. However, it has a high fat content. The invention produces a defatted collagen paste from a collagen source by cutting the collagen into pieces, pressurising the collagen pieces to squeeze out fat and disintegrating the defatted pieces to form a fibrous paste. The paste can be used to produce a gel, which may be extruded to produce a collagen product.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: March 15, 2011
    Assignee: Devro PLC
    Inventors: Derek Samuel David Norwood, Robert Gordon Paul
  • Porcine collagen film
    Patent number: 7754258
    Abstract: A porcine collagen film is made from an extrudable collagen gel. The porcine collagen is essentially sow collagen. The ratio of collagen to fat is usually above 10:1, for example in the range 25:1 to 50:1.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: July 13, 2010
    Assignee: Devro PLC
    Inventors: Trevor Morgan, Derek Samuel David Norwood, Mark Gray
  • DEFATTING COLLAGEN
    Publication number: 20090023899
    Abstract: Pig rind is one source of collagen for processing into products, such as sausage casings and films. However, it has a high fat content. The invention produces a defatted collagen paste from a collagen source by cutting the collagen into pieces, pressurising the collagen pieces to squeeze out fat and disintegrating the defatted pieces to form a fibrous paste. The paste can be used to produce a gel, which may be extruded to produce a collagen product.
    Type: Application
    Filed: December 22, 2006
    Publication date: January 22, 2009
    Inventors: Derek Samuel David Norwood, Robert Gordon Paul
  • Apparatus and method for forming sausage links
    Patent number: 5944594
    Abstract: Apparatus for forming a chain of sausage links is described in which the formed links are less likely to unwind. The apparatus includes a conveyor (10) for moving a tubular food casing (18) filled with a food emulsion around an axis (12), the conveyor having a plurality of crimping (14a-h) and twisting (15a-h) means for forming a continuous adjacent links. The conveyor (10) moves the links through a semicircular path past station (A-I) where twisting and crimping operations are performed. The links so formed have a first set twisted in one direction about the tubular food casing axis and a second set of adjacent links twisted in the opposite direction.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: August 31, 1999
    Assignee: Devro PLC
    Inventors: Allan James Hanlon, Tom Saddler Lynch, Derek Samuel David Norwood, Frederikus Johannes Brink, Jan Schipper
  • Apparatus and method for forming sausage links
    Patent number: 5833525
    Abstract: Apparatus for forming a chain of sausage links is described in which the formed links are less likely to unwind. The apparatus includes a conveyor (10) for moving a tubular food casing (18) filled with a food emulsion around an axis (12), the conveyor having a plurality of crimping (14a-h) and twisting (15a-h) means for forming a continuous adjacent links. The conveyor (10) moves the links through a semicircular path past station (A-I) where twisting and crimping operations are performed. The links so formed have a first set twisted in one direction about the tubular food casing axis and a second set of adjacent links twisted in the opposite direction.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: November 10, 1998
    Assignee: Devro PLC
    Inventors: Allan James Hanlon, Tom Saddler Lynch, Derek Samuel David Norwood, Frederikus Johannes Brink, Jan Schipper