Patents by Inventor Norihito Hayakawa

Norihito Hayakawa 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).

  • Thifluzamide with improved efficacy
    Patent number: 6043262
    Abstract: The present invention provides thifluzamide which has changed its crystalline form, its preparation method, and a pesticide composition containing thifluzamide as its effective ingredient. The rate of dissolution of the thifluzamide obtained is high and the pesticide compounds containing it has improved efficacy.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: March 28, 2000
    Assignee: Rohm and Haas Company
    Inventors: Norihito Hayakawa, Masatoshi Baba, Norihiro Suwa, Kazuhiro Yamagishi
  • Thifluzamide with stabilized efficacy
    Patent number: 5837721
    Abstract: The disclosed invention is thifluzamide with an altered crystalline form, prepared by heat-melting and then cooling, and agricultural chemical compositions comprising such a thifluzamide as its effective ingredient.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: November 17, 1998
    Assignee: Rohm and Haas Company
    Inventors: Norihito Hayakawa, Masatoshi Baba, Norihiro Suwa, Kazuhiro Yamagishi
  • Agricultural chemical compositions with improved thifluzamide release in water
    Patent number: 5723478
    Abstract: The disclosed invention provides agricultural chemical compositions containing active carbon-treated thifluzamide as an effective ingredient. Such compositions provide increased release of thifluzamide into water.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: March 3, 1998
    Assignee: Rohm and Haas Company
    Inventors: Norihito Hayakawa, Masatoshi Baba