Patents by Inventor Yasuhiro Kozasa

Yasuhiro Kozasa 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).

  • Underwater antifouling coating composition with excellent storage stability
    Patent number: 7553481
    Abstract: An underwater antifouling coating composition which contains a metal pyrithione compound and cuprous oxide as an active ingredient, and a compound represented by the general formula (II): (wherein M2 is H, Na, ½Zn or ½Cu) as a stabilizer has high storage stability over long.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: June 30, 2009
    Assignee: API Corporation
    Inventors: Yasuhiro Kozasa, Yuji Koga
  • Underwater antifouling coating composition with excellent storage stability
    Publication number: 20050123503
    Abstract: An underwater antifouling coating composition which contains a metal pyrithione compound and cuprous oxide as an active ingredient, and a compound represented by the general formula (II): (wherein M2 is H, Na,½Zn or ½Cu) as a stabilizer has high storage stability over long.
    Type: Application
    Filed: March 14, 2003
    Publication date: June 9, 2005
    Inventors: Yasuhiro Kozasa, Yuji Koga
  • Coated bis (2-pyridinethiol-1-oxide) copper salt
    Patent number: 6630079
    Abstract: The present invention provides a bis(2-pyridinethiol-1-oxide) copper salt coated with one or more compounds selected from glycerin, dialkyl phthalate, lubricating oil, acrylic resin, rosin, fatty acid amide, dialkyl polysulfide, polybutene, paraffin and petrolatum. The coated copper salt does not scatter, so that it is easy to handle, and is superior in safety and workability. In addition, the copper salt does not suffer from any adverse influence on the inherent storage stability or antifouling effect by being coated. Therefore, a coating for the bottom of a ship having a superior antifouling effect and storage stability can be obtained.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: October 7, 2003
    Assignee: API Corporation
    Inventors: Yasuhiro Kozasa, Yoshifumi Shibuya, Toshio Morishita, Yasuhiro Hidaka, Hiroyuki Akashi
  • Coated bis (2-pyridinethiol-1-oxide) copper salt
    Publication number: 20030124085
    Abstract: The present invention provides a bis(2-pyridinethiol-1-oxide) copper salt coated with one or more compounds selected from glycerin, dialkyl phthalate, lubricating oil, acrylic resin, rosin, fatty acid amide, dialkyl polysulfide, polybutene, paraffin and petrolatum. The coated copper salt does not scatter, so that it is easy to handle, and is superior in safety and workability. In addition, the copper salt does not suffer from any adverse influence on the inherent storage stability or antifouling effect by being coated. Therefore, a coating for the bottom of a ship having a superior antifouling effect and storage stability can be obtained.
    Type: Application
    Filed: January 8, 2003
    Publication date: July 3, 2003
    Inventors: Yasuhiro Kozasa, Yoshifumi Shibuya, Toshio Morishita, Yasuhiro Hidaka, Hiroyuki Akashi
  • Coated bis(2-pyridinethiol-1-oxide) copper salt
    Patent number: 6544440
    Abstract: The present invention provides a bis(2-pyridinethiol-1-oxide) copper salt coated with one or more compounds selected from glycerin, dialkyl phthalate, lubricating oil, acrylic resin, rosin, fatty acid amide, dialkyl polysulfide, polybutene, paraffin and petrolatum. The coated copper salt does not scatter, so that it is easy to handle, and is superior in safety and workability. In addition, the copper salt does not suffer from any adverse influence on the inherent storage stability or antifouling effect by being coated. Therefore, a coating for the bottom of a ship having a superior antifouling effect and storage stability can be obtained.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: April 8, 2003
    Assignee: API Corporation
    Inventors: Yasuhiro Kozasa, Yoshifumi Shibuya, Toshio Morishita, Yasuhiro Hidaka, Hiroyuki Akashi