Patents by Inventor Robert W. Hodgetts

Robert W. Hodgetts 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 for making styrene copolymers and uses thereof
    Patent number: 5886076
    Abstract: A polymer comprising styrene or substituted-styrene and carboxylated monomer is prepared by a solution polymerization process, comprising first a polymerization step, followed by a neutralization step, and then a distillation step. The polymers have relatively low molecular weights, generally below about 10,000, and can have higher styrene content than has hither been possible. The polymers are found to have good soil release properties and so to be particularly useful in cleaning compositions for fabric or hard surface cleaning.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: March 23, 1999
    Assignee: National Starch and Chemical Investment Holding Coporation
    Inventors: Paul T. Kimpton, Robert W. Hodgetts
  • Methods for making styrene copolymers and uses thereof
    Patent number: 5789511
    Abstract: A polymer comprising styrene or substituted-styrene and carboxylated monomer is prepared by a solution polymerization process, comprising first a polymerization step, followed by a neutralization step, and then a distillation step. The polymers have relatively low molecular weights, generally below about 10,000, and can have higher styrene content than has hither been possible. The polymers are found to have good soil release properties and so to be particularly useful in cleaning compositions for fabric or hard surface cleaning.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: August 4, 1998
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Paul T. Kimpton, Robert W. Hodgetts
  • Starched-based adjuncts for detergents
    Patent number: 5763381
    Abstract: The detergent compositions of the present invention utilize cold-water-soluble starch, either chemically modified or not, as multifunctional detergent adjuncts, in amounts effective to impart simultaneously anti-redeposition properties and soil release properties to the detergent compositions.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: June 9, 1998
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Robert W. Hodgetts, James M. Garvey, Daniel B. Solarek
  • Methods for making styrene copolymers and uses thereof
    Patent number: 5650473
    Abstract: A polymer comprising styrene or substituted-styrene and carboxylated monomer is prepared by a solution polymerization process, comprising first a polymerization step, followed by a neutralization step, and then a distillation step. The polymers have relatively low molecular weights, generally below about 10,000, and can have higher styrene content than has hither been possible. The polymers are found to have good soil release properties and so to be particularly useful in cleaning compositions for fabric or hard surface cleaning.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: July 22, 1997
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Paul T. Kimpton, Robert W. Hodgetts