Patents by Inventor Stewart Derbyshire

Stewart Derbyshire 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).

  • Methods Of Producing Amine-Terminated Caprolactone Polymers And Uses Of The Produced Polymers
    Publication number: 20080033138
    Abstract: A method for the preparation of an amine-terminated caprolactone polymer having at least two terminal ends with a primary amine located thereon, comprising the steps of: (a) using a polycarboxylic acid as an initiator in the ring opening poly- merization of epsilon-caprolactone to produce a polycaprolactone polymer having at least two terminal ends with a carboxylic acid located thereon; and then (b) reacting the product of step (a) with a polyamine at a temperature of above 50° C. to produce an amine-terminated polycaprolactone polymer.
    Type: Application
    Filed: October 17, 2005
    Publication date: February 7, 2008
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventors: Graham Carr, Robert Wasson, Stewart Derbyshire
  • Coating compositions
    Patent number: 4279946
    Abstract: Flammable foundry coatings are disclosed in which the carrier liquid is safer to handle than previously used types e.g. isopropanol, and which also burns off more satisfactorily. The carrier liquid is a mixture of an essentially aliphatic hydrocarbon liquid of flash point greater than 32.degree. C., e.g. an aliphatic petroleum distillate, and a mono alkyl ether of a polyhydric alcohol, e.g. ethylene glycol monoethyl ether (oxitol).
    Type: Grant
    Filed: August 29, 1978
    Date of Patent: July 21, 1981
    Assignee: Foseco International Limited
    Inventor: Stewart Derbyshire