Patents by Inventor Alfred R. Elmes

Alfred R. Elmes 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).

  • Copolymers and detergent compositions containing them
    Patent number: 5431846
    Abstract: Novel block copolymers comprising from 20 to 95 mole % of monomer units derived from itaconic acid or a homologue thereof and from 5 to 80 mole % of monomer units derived from vinyl alcohol or a lower vinyl ester are excellent binders of divalent or polyvalent metals and are useful as potentially biodegradable builders in detergent compositions as well as in machine dishwashing compositions and anti-scaling rinse compositions.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: July 11, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: David J. Christopher, Alfred R. Elmes, Sigrun Eriksen, Ezat Khoshdel, Derek G. Savill
  • Porous material and its preparation
    Patent number: 5021462
    Abstract: A porous polymeric material has cell sizes within the range 100 to 0.5 .mu.m and total pore volume with respect to the overall volume of the material in the range 75 to 98% and includes cross-linked polycondensation polymeric material. The material can be made from a high internal phase emulsion in which the cross-linked polycondensation polymer is formed in the continuous phase. The materials are preferably open interconnected cellular structures. They can be made of a wide range of polycondensation materials. The materials are thus highly porous and light weight and have a range of properties depending primarily on their constituent polycondensation materials.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: June 4, 1991
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Alfred R. Elmes, Kevin Hammond, David C. Sherrington
  • Porous material and its preparation
    Patent number: 4985468
    Abstract: A porous polymeric material has cell sizes within the range 100 to 0.5 .mu.m and total pore volume with respect to the overall volume of the material in the range 75 to 98% and includes cross-linked polycondensation polymeric material. The material can be made from a high internal phase emulsion in which the cross-linked polycondensation polymer is formed in the continuous phase. The materials are preferably open interconnected cellular structures. They can be made of a wide range of polycondensation materials. The materials are thus highly porous and light weight and have a range of properties depending primarily on their constituent polycondensation materials.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: January 15, 1991
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Alfred R. Elmes, Kevin Hammond, David C. Sherrington