Patents by Inventor Maynard H. Olson

Maynard H. Olson 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).

  • Process for providing polyamide materials with stain resistance
    Patent number: 4937123
    Abstract: A method for imparting to fibrous polyamide materials stain resistance to acid colorants is provided. The method comprises contacting the fibrous polyamide materials with an aqueous treating solution comprising polymethacrylic acid, copolymers of methacrylic acid, or combinations thereof, and drying said substrate, said polymethacrylic acid, copolymers of methacrylic acid, or combinations thereof being provided in a sufficient amount and having a solubility and molecular weight such that said fibrous polyamide substrate has an improved acid colorant stain resistance.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: June 26, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John C. Chang, Maynard H. Olson, Imelda A. Muggli
  • Process for providing polyamide materials with stain resistance with sulfonated novolak resin and polymethacrylic acd
    Patent number: 4822373
    Abstract: A treated fibrous polyamide substrate having resistance to staining by acid colorants is provided. The treated substrate comprises a fibrous polyamide substrate having applied thereto (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinations of said polymethacrylic acid and said copolymers of methacrylic acid.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: April 18, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Maynard H. Olson, John C. Chang, Imelda A. Muggli
  • Mist suppressant for solvent extraction metal electrowinning
    Patent number: 4484990
    Abstract: The formation of acid mist or spray over metal electrowinning tanks, such as in the electrowinning of copper obtained by solvent extraction, is substantially inhibited or eliminated by electrowinning the metal from electrolyte containing certain cationic and/or amphoteric fluoroaliphatic surfactants.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: November 27, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David A. Bultman, Maynard H. Olson