Patents by Inventor Shuhei Yuki

Shuhei Yuki 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).

  • Anti-fouling compositions and fouling control of harmful aquatic organisms
    Patent number: 6010693
    Abstract: There are disclosed a controlling agent and an antifouling composition against harmful aquatic organisms, which include a particular N-phenylisothiazolone derivative of the formula: ##STR1## wherein X.sup.1 and X.sup.2 are the same or different and are independently hydrogen, chlorine or bromine; and R is haloalkoxy. Also disclosed is a method for preventing or inhibiting the adhesion of harmful aquatic organisms to water-exposed articles, which includes applying the antifouling composition to the water-exposed articles.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: January 4, 2000
    Assignees: Chugoku Marine Paints, Ltd., Sumitomo Chemical Company, Limited
    Inventors: Makoto Tsuboi, Shuhei Yuki, Akiko Kakimizu, Kenji Arai, Masato Mizutani
  • Anti-fouling compositions comprising N-phenylisothiazalone derivatives and fouling control of harmful aquatic organisms using same
    Patent number: 5683686
    Abstract: There are disclosed a controlling agent and an antifouling composition against harmful aquatic organisms, which include a particular N-phenylisothiazolone derivative of the formula: ##STR1## wherein X.sup.1 and X.sup.2 are the same or different and are independently hydrogen, chlorine or bromine; and R is haloalkoxy. Also disclosed is a method for preventing or inhibiting the adhesion of harmful aquatic organisms to water-exposed articles, which includes applying the antifouling composition to the water-exposed articles.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: November 4, 1997
    Assignees: Chugoku Marine Paints, Ltd., Sumitomo Chemical Company, Limited
    Inventors: Makoto Tsuboi, Shuhei Yuki, Akiko Kakimizu, Kenji Arai, Masato Mizutani
  • Anti-fouling compositions or fouling control of harmful aquatic organisms
    Patent number: 5507862
    Abstract: There are disclosed a controlling agent and an antifouling composition against harmful aquatic organisms, which include a particular N-phenylbenzoisothiazolone derivative of the formula: ##STR1## wherein R's are the same or different and are independently halogen, alkyl or alkoxy; n is an integer of 0 to 5; X's are the same or different and are independently halogen, nitro, alkyl or alkoxy; and m is an integer of 0 to 4; with the proviso that when the R's are all alkyl or all alkoxy, n is an integer of 1 to 3, and when all of the R's are different, n is an integer of 2 or 3. Also disclosed is a method for preventing or inhibiting the adhesion of harmful aquatic organisms to water-exposed articles, which includes applying the antifouling composition to the water-exposed articles.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: April 16, 1996
    Assignees: Sumitomo Chemical Company, Limited, Chugoku Marine Paints, Ltd.
    Inventors: Makoto Tsuboi, Shuhei Yuki, Kenji Arai, Tomohiro Teramae, Masato Mizutani