Patents by Inventor Tomonori Yoshiyama

Tomonori Yoshiyama 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).

  • Process for producing trichloropyrimidine compound
    Patent number: 8158787
    Abstract: A process for producing a trichloropyrimidine compound represented by the formula (2): wherein R represents a hydrogen atom etc., comprising reacting a dihydroxypyrimidine compound represented by the formula (1): wherein R represents the same meaning as above, with sulfuryl chloride and at least one chlorinating agent selected from the group consisting of hydrogen chloride, thionyl chloride, phosgene, phosphorus oxychloride, phosphorus pentachloride and phosphorus trichloride in the presence of an organic base.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: April 17, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Koichi Nakazawa, Tomonori Yoshiyama, Kouji Yoshikawa
  • PROCESS FOR PRODUCING TRICHLOROPYRIMIDINE COMPOUND
    Publication number: 20100160630
    Abstract: A process for producing a trichloropyrimidine compound represented by the formula (2): wherein R represents a hydrogen atom etc., comprising reacting a dihydroxypyrimidine compound represented by the formula (1): wherein R represents the same meaning as above, with sulfuryl chloride and at least one chlorinating agent selected from the group consisting of hydrogen chloride, thionyl chloride, phosgene, phosphorus oxychloride, phosphorus pentachloride and phosphorus trichloride in the presence of an organic base.
    Type: Application
    Filed: March 26, 2008
    Publication date: June 24, 2010
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Koichi Nakazawa, Tomonori Yoshiyama, Kouji Yoshikawa
  • Method for producing 2,2-dimethyl-3-(1-propenyl)cyclopropanecarboxylate ester
    Patent number: 6462225
    Abstract: An ester compound, which is a production intermediate of a pyrethroid compound, given by formula wherein R1 represents C1-6 alkyl group, etc., can be produced by allowing to react an aldehyde compound given by formula wherein R1 has the same meaning above, with a phosphorane compound given by formula wherein R2 represents a hydrogen atom, halogen atom or C1-4 alkyl group, in an organic solvent, and obtaining a liquid distillate by heating the above reaction mixture with water in high yield.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: October 8, 2002
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Tomonori Yoshiyama
  • Method for producing 2,2-dimethyl-3-(1-propenyl)cyclopropanecarboxylate ester
    Publication number: 20010014755
    Abstract: An ester compound, which is a production intermediate of a pyrethroid compound, given by formula 1
    Type: Application
    Filed: December 22, 2000
    Publication date: August 16, 2001
    Inventor: Tomonori Yoshiyama