Patents by Inventor Shouji Iwatsuki

Shouji Iwatsuki 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).

  • Fluoroacrylic compounds
    Patent number: 4558152
    Abstract: A copolymer of an acrylic acid derivative and an other copolymerizable monomer, the acrylic acid derivative being a compound represented by the formula (1) ##STR1## wherein Rf and Rf' are respectively perfluoroalkyl group having 3 to 21 carbon atoms, a is an integer of 2 to 10, b is an integer of 1 to 10. The said copolymers are useful as water repellent, oil repellent and stain proofing agents.
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: December 10, 1985
    Assignee: Daikin Kogyo Company Limited
    Inventor: Shouji Iwatsuki
  • Fluoroacrylic copolymer
    Patent number: 4547558
    Abstract: A copolymer of an acrylic acid derivative and an other copolymerizable monomer, the acrylic acid derivative being a compound represented by the formula (1) ##STR1## wherein Rf and Rf' are respectively perfluoroalkyl group having 3 to 21 carbon atoms, a is an integer of 2 to 10, b is an integer of 1 to 10.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: October 15, 1985
    Assignee: Daikin Kogyo Company Limited
    Inventor: Shouji Iwatsuki