Patents Assigned to PVAXX Research & Development Limited
  • PVA-containing compositions
    Patent number: 7375146
    Abstract: An extrudable PVA-containing composition is disclosed, which enables PVA articles to be manufactured on conventional extrusion apparatus. The composition includes a lubricant, such as a fatty acid amide, and is formed into pellets by cold pressing. The compositions are suitable for manufacturing a variety of products.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: May 20, 2008
    Assignee: PVAXX Research & Development Limited
    Inventor: Henry Guy Stevens
  • PVA-containing compositions
    Patent number: 7279510
    Abstract: An extrudable PVA-containing composition is disclosed, which enables PVA articles to be manufactured on conventional extrusion apparatus. The compositions includes a lubricant, such as a fatty acid amide, most preferably octodecanamide and is most preferably formed into pellets by cold pressing.,The compositions are suitable for manufacturing a variety of products.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: October 9, 2007
    Assignee: PVAXX Research & Development Limited
    Inventor: Henry Guy Stevens
  • Method and apparatus for blowmoding capsules of polyvinylalcohol and blowmolded polyvinylalcohol capsules
    Patent number: 7195777
    Abstract: A capsule is formed from a PVA composition by blow moulding. Such capsules can at last provide a viable alternative to gelatin for bio-degradeable capsule containing a pharmaceutical or consumable or other substance, for example a detergent. The capsules may contain solid or liquid substances. Blow moulding apparatus suitable for forming such capsules is also disclosed and claimed.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: March 27, 2007
    Assignee: PVAXX Research & Development Limited
    Inventors: Henry Guy Stevens, John Colin Dawson