Patents by Inventor Lyle F. Elmquist

Lyle F. Elmquist 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).

  • Thickeners having two ionic components and use thereof in aqueous compositions
    Patent number: 4655943
    Abstract: A thickener composition is comprised of a polymer having as the major recurring structural unit an acrylamidoalkanesulfonic acid or derivative thereof and a polyvalent metal crosslinking agent is provided. The compositions are useful for thickening aqueous solutions within a specified range of pH. The thickener is effective even in aqueous compositions having high levels of electrolytes.
    Type: Grant
    Filed: December 14, 1984
    Date of Patent: April 7, 1987
    Assignee: Henkel Corporation
    Inventors: Lyle F. Elmquist, Warren W. Howland, Curtis L. Karl
  • Composition for absorbent film and method of preparation
    Patent number: 4467012
    Abstract: An absorbent composition comprising the reaction product at elevated temperature and pressure of hydrolyzed starch polyacrylonitrile graft copolymer and a polyhydric alcohol such as glycerol in the amount of between about 3% and 20%. The resulting composition exhibits good fluid absorbency and fast wicking properties and is particularly useful in producing absorbent laminated film for use in diapers, paper towels and the like. The present invention also relates to an improved absorbent laminated film prepared with the above absorbent composition and a method for preparing such absorbent laminated film.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: August 21, 1984
    Assignee: Grain Processing Corporation
    Inventors: Lee C. Pedersen, Lyle F. Elmquist
  • Composition for absorbent film and method and preparation
    Patent number: 4412036
    Abstract: An absorbent composition comprising the reaction product at elevated temperature and pressure of hydrolyzed starch polyacrylonitrile graft copolymer and a polyhydric alcohol such as glycerol in the amount of between about 3% and 20%. The resulting composition exhibits good fluid absorbency and fast wicking properties and is particularly useful in producing absorbent laminated film for use in diapers, paper towels and the like. The present invention also relates to an improved absorbent laminated film prepared with the above absorbent composition and a method for preparing such absorbent laminated film.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: October 25, 1983
    Assignee: Grain Processing Corporation
    Inventors: Lee C. Pedersen, Lyle F. Elmquist
  • Absorbent starch graft polymer and method of its preparation
    Patent number: 4323487
    Abstract: A water absorbent composition and method of preparing the same having improved wicking characteristics and comprising a combination of hydrolyzed starch polyacrylonitrile graft copolymer and a source of formaldehyde.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: April 6, 1982
    Assignee: Henkel Corporation
    Inventors: Duane A. Jones, Lyle F. Elmquist
  • Aluminum modified water absorbent composition
    Patent number: 4302369
    Abstract: The present invention describes a composition useful for absorbing substantial quantities of water and a preferred process for the manufacture of such compositions.
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: November 24, 1981
    Assignee: Henkel Corporation
    Inventor: Lyle F. Elmquist
  • Dispersible starch graft copolymer blend
    Patent number: 4159260
    Abstract: A blend of hydrolyzed polyacrylonitrile-starch graft copolymer and a fatty quaternary ammonium chloride which exhibits good wicking and dispersing properties.
    Type: Grant
    Filed: November 23, 1977
    Date of Patent: June 26, 1979
    Assignee: Henkel Corporation
    Inventors: Duane A. Jones, Lyle F. Elmquist
  • Film forming SGP
    Patent number: 4156664
    Abstract: Film forming starch-hydrolyzed polyacrylonitrile graft copolymer and latex composition.
    Type: Grant
    Filed: January 31, 1978
    Date of Patent: May 29, 1979
    Assignee: Henkel Corporation
    Inventors: Earl L. Skinner, Lyle F. Elmquist