Patents by Inventor Walter Gasser

Walter Gasser 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).

  • Agent for brightening and removing greyness from textiles
    Patent number: 4008172
    Abstract: Agent for the preparation of the baths for brightening the color of and removing the greyness from white and pastel colored textiles which are made from synthetic fibers or which are provided with an easy-care finish and are made from cotton or blends thereof with synthetic fibers, which consists essentially of an organic polymer which is soluble or emulsifiable in water and is a homopolymer of acrylic or methacrylic acid or an ester or amide thereof, a copolymer of acrylic or methacrylic acid or an ester of amide thereof with acrylic or methacrylic acid alkylpolyalkylene glycol ester, a polyvinyl acetate or a water-soluble starch derivative, and a mixture thereof, and a fluorescent brightener which is soluble or dispersible in water.
    Type: Grant
    Filed: October 31, 1974
    Date of Patent: February 15, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Richard von Rutte, Walter Gasser
  • Agent for brightening and removing greyness from textiles
    Patent number: RE30227
    Abstract: Agent for the preparation of the baths for brightening the color of and removing the greyness from white and pastel colored textiles which are made from synthetic fibers or which are provided with an easy-care finish and are made from cotton or blends thereof with synthetic fibers, which consists essentially of an organic polymer which is soluble or emulsifiable in water and is a homopolymer of acrylic or methacrylic acid or an ester or amide thereof, a copolymer of acrylic or methacrylic acid or an ester of amide thereof with acrylic or methacrylic acid alkylpolyalkylene glycol ester, a polyvinyl acetate or a water-soluble starch derivative, and a mixture thereof, and a fluorescent brightener which is soluble or dispersible in water.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: March 11, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Richard von Rutte, Walter Gasser