Patents by Inventor Noritaka Hirazawa

Noritaka Hirazawa 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).

  • Antiparasitic agent for fish and method of controlling proliferation of fish parasites
    Patent number: 9439423
    Abstract: An antiparasitic agent for fish includes an inhibitor of folate synthesis and/or an inhibitor of folate activation as the active substance(s). A combination preparation composed of an inhibitor of folate synthesis and an inhibitor of folate activation is disclosed. Sulfonamide is disclosed as suitable for the inhibitor of folate synthesis. A dihydrofolate reductase inhibitor, a folate antagonist are disclosed as suitable inhibitors of folate activation. The antiparasitic agent is able to exterminate fish parasites via oral administration. It is effective against fish parasites belonging to the ciliate group.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: September 13, 2016
    Assignee: NIPPON SUISAN KAISHA, LTD.
    Inventors: Fumi Kawano, Noritaka Hirazawa
  • Antiparasitic agent for fish and method of controlling proliferation of fish parasites
    Patent number: 9265777
    Abstract: A method of controlling proliferation of fish parasites comprising the administration of 1 to 50 mg/kg fish body weight/day of an inhibitor of folate synthesis and/or an inhibitor of folate activation to fish continuously for 1 to 2 weeks. Using a combination preparation composed of an inhibitor of folate synthesis and an inhibitor of folate activation is preferable, and a sulfonamide is preferable for the inhibitor of folate synthesis. A dihydrofolate reductase inhibitor, a folate antagonist, etc., can be used as the inhibitor of folate activation. The antiparasitic agent is able to exterminate fish parasites via oral administration. It is particularly effective against parasites belonging to the ciliate group among fish parasites.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: February 23, 2016
    Assignee: NIPPON SUISAN KAISHA, LTD.
    Inventors: Fumi Kawano, Noritaka Hirazawa
  • ANTIPARASITIC AGENT FOR FISH AND METHOD OF CONTROLLING PROLIFERATION OF FISH PARASITES
    Publication number: 20120035181
    Abstract: A method of controlling proliferation of fish parasites comprising the administration of 1 to 50 mg/kg fish body weight/day of an inhibitor of folate synthesis and/or an inhibitor of folate activation to fish continuously for 1 to 2 weeks. Using a combination preparation composed of an inhibitor of folate synthesis and an inhibitor of folate activation is preferable, and a sulfonamide is preferable for the inhibitor of folate synthesis. A dihydrofolate reductase inhibitor, a folate antagonist, etc., can be used as the inhibitor of folate activation. The antiparasitic agent is able to exterminate fish parasites via oral administration. It is particularly effective against parasites belonging to the ciliate group among fish parasites.
    Type: Application
    Filed: April 26, 2010
    Publication date: February 9, 2012
    Applicant: NIPPON SUISAN KAISHA, LTD.
    Inventors: Fumi Kawano, Noritaka Hirazawa
  • ANTIPARASITIC AGENT FOR FISH AND METHOD OF CONTROLLING PROLIFERATION OF FISH PARASITES
    Publication number: 20100311759
    Abstract: An antiparasitic agent for fish containing an inhibitor of folate synthesis and/or an inhibitor of folate activation as the active substance(s). A combination preparation composed of an inhibitor of folate synthesis and an inhibitor of folate activation is preferable, and a sulfonamide is preferable for the inhibitor of folate synthesis. A dihydrofolate reductase inhibitor, a folate antagonist, etc., can be used as the inhibitor of folate activation. The antiparasitic agent is able to exterminate fish parasites via oral administration. It is particularly effective against parasites belonging to the ciliate group among fish parasites.
    Type: Application
    Filed: October 29, 2008
    Publication date: December 9, 2010
    Applicant: NIPPON SUISAN KAISHA, LTD.
    Inventors: Fumi Kawano, Noritaka Hirazawa
  • Natural physiologically active material effective on fish diseases and fish food containing the material
    Publication number: 20030162834
    Abstract: The invention intends to provide a natural physiologically active material effective on fish diseases such as virus diseases, bacterial diseases and parasitic diseases when fed to fish by oral administration, and fish food containing the material.
    Type: Application
    Filed: March 17, 2003
    Publication date: August 28, 2003
    Applicant: NIPPON SUISAN KAISHA LTD.
    Inventors: Noritaka Hirazawa, Shunichiro Oshima, Toru Mitsuboshi, Kazuhiko Hata