Patents by Inventor Yukio Kiritani

Yukio Kiritani 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).

  • Insecticide composition and production process thereof
    Patent number: 5733561
    Abstract: An aqueous suspension-type microcapsule insecticide composition which is obtained by emulsifying a hydrophobic admixture of liquid pyrethroid insecticide or a pyrethroid insecticide and a high boiling point solvent, preferably an alkyl ester of phthalic acid in which the alkyl group has 8-13 carbon atoms to form particles of a suitable size in the presence of an anionic water-soluble polymeric surface active agent and polycondensating melamine-formaldehyde or a derivative thereof on the surface of the said emulsified and dispersed particles, and a process for producing the composition. This composition exhibits stable insecticidal activity over a prolonged period with noticeably reduced toxicity to aquatic life.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: March 31, 1998
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yoshinobu Shimura, Tamotsu Asano, Seiichi Shimono, Takeshi Imakita, Yukio Kiritani, Yuuji Enomoto, Toshio Matsumoto