Patents by Inventor Terence Yeates

Terence Yeates 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).

  • Water soluble films
    Publication number: 20040210025
    Abstract: Water-soluble films suitable for water-dissolvable packaging comprising a polyurethane polymer having defined amounts of poly(ethylene oxide) (and optionally poly(propylene oxide)) groups and acid (preferably carboxyl) groups at least 50% neutralised with a base, at least a proportion of which is of the non-volatile type, the polyurethane being made by chain extension of a urethane prepolymer. Also water-soluble packaging (sachets, capsules, bags) made from the films and their use in packaging various materials, and a process for the production of aqueous polyurethane solutions which may be used for making such films.
    Type: Application
    Filed: December 10, 2003
    Publication date: October 21, 2004
    Inventors: David Charles Hinde, Gerardus Cornelis Overbeek, John Christopher Padget, Phillip Cheshire, Terence Yeates, Yvonne Wilhelmina Smak
  • Water soluble films
    Patent number: 6776287
    Abstract: Water-soluble films suitable for water-dissolvable packaging comprising a polyurethane polymer having defined amounts of poly(ethylene oxide) (and optionally poly(propylene oxide)) groups and acid (preferably carboxyl) groups at least 50% neutralised with a base, at least a proportion of which is of the non-volatile type, the polyurethane being made by chain extension of a urethane prepolymer. Also water-soluble packaging (sachets, capsules, bags) made from the films and their use in packaging various materials, and a process for the production of aqueous polyurethane solutions which may be used for making such films.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: August 17, 2004
    Assignee: Aquasol Limited
    Inventors: David Charles Hinde, Gerardus Cornelis Overbeek, John Christopher Padget, Phillip Cheshire, Terence Yeates, Yvonne Wilhelmina Smak