Patents by Inventor Masami Hatano

Masami Hatano 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).

  • Patent number: 6756497
    Abstract: Benzoic acid derivatives useful as intermediates for the preparation of drugs and agricultural chemicals, particularly compounds having herbicidal activity; and easy and economical processes for the preparation of the same. The processes are specifically those represented by reaction formula for the preparation of compounds represented by general formulae (1) and (6).
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: June 29, 2004
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Yuuki Nakagawa, Masao Yamaguchi, Hiroyuki Adachi, Hiroyuki Yamanaka, Tomio Yagihara, Masami Hatano
  • Publication number: 20040019221
    Abstract: A process (1) for the preparation of 4-cyanoacetylpyrazoles of the general formula (I) wherein R1 is C1-6 alkyl, R2 is C1-6 alkyl or C1-6 haloalkyl, and X is hydrogen or C1-6 alkyl which comprises using a pyrazolecarboxylic acid halide and a cyanoacetate ester; a process (2) for the preparation of the same which comprises using a pyrazolecarboxylic acid and a cyanoacetate ester; a process (3) for the preparation of the same which comprises using a pyrazolecarbonitrile; and a process (4) for the preparation of the same which comprises using a haloacetylpyrazole. Furthermore, an industrially advantageous process for preparing pyrazolecarboxylic acids useful as intermediates in the above processes.
    Type: Application
    Filed: February 6, 2003
    Publication date: January 29, 2004
    Inventors: Tomio Yagihara, Tsutomu Imagawa, Shigemi Suga, Masami Hatano, Yasushi Shibata, Tetsushi Ookuchi, Isamu Kasahara
  • Patent number: 5468905
    Abstract: Compounds represented by general formulas (I) and (II), useful as the intermediates for agricultural chemicals, particularly herbicidal compounds, wherein R.sup.1 and R.sup.2 represent each hydrogen, alkyl or COOR.sup.3 :R.sup.3 represents alkyl: and R.sup.4 represents alkyl.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: November 21, 1995
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Junji Suzuki, Masami Hatano, Shinichi Imaizumi
  • Patent number: 5221753
    Abstract: A process for the preparation of 1-(4-tetrahydropyranyl)- or 1-(4-tetrahydrothiopyranyl)prop-1-en-3-ones of the general formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 - to C.sub.10 -alkyl, C.sub.1 - to C.sub.10 -alkoxy or aryloxy,R.sup.2 is hydrogen, C.sub.1 - to C.sub.4 -alkyl, or aryl which is unsubstituted or substituted by C.sub.1 - to C.sub.4 -alkyl and/or halogen, andX is oxygen or sulfur,by reacting 1-aminoprop-1-en-3-ones of the general formula II ##STR2## where R.sup.1 and R.sup.2 are as defined above, andR.sup.3 and R.sup.4, independently of one another, are hydrogen, C.sub.1 - to C.sub.4 -alkyl, aryl or together are a C.sub.2 - to C.sub.7 -alkylene chain,with a 4-tetrahydropyranyl- or 4-tetrahydrothiopyranylmagnesium halide of the general formula III ##STR3## where X is as defined above and Y is halogen, at from -20.degree. to 100.degree. C.,and novel 1-(4-tetrahydropyranyl)- or 1-(4-tetrahydrothiopyranyl)prop-1-en-3-ones are described.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: June 22, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Shigeru Kozima, Masami Hatano