Patents by Inventor Yoshitomo Tohyama

Yoshitomo Tohyama 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: 8466321
    Abstract: There are provided a 4-(trichloromethylthio)aniline represented by the general formula (II): wherein R1 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R2 each independently represents a halogen atom, an alkyl group having 1 to 3 carbon atoms, or a perfluoroalkyl group having 1 to 3 carbon atoms, R3 represents a formyl group, an acetyl group, or a trifluoroacetyl group, and m represents an integer of 0 to 4, a method for producing the same, and a method for producing a 4-(trifluoromethylthio)aniline derivative using the 4-(trichloromethylthio)aniline. It becomes possible to produce a 4-(trifluoromethylthio)aniline with a high yield by using raw materials that can easily be obtained industrially and using general purpose production facilities.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: June 18, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshitomo Tohyama, Kengo Kanematsu
  • Patent number: 8399707
    Abstract: There are provided a 4-(trichloromethylthio)aniline represented by the general formula (II): wherein R1 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R2 each independently represents a halogen atom, an alkyl group having 1 to 3 carbon atoms, or a perfluoroalkyl group having 1 to 3 carbon atoms, R3 represents a formyl group, an acetyl group, or a trifluoroacetyl group, and m represents an integer of 0 to 4, a method for producing the same, and a method for producing a 4-(trifluoromethylthio)aniline derivative using the 4-(trichloromethylthio)aniline. It becomes possible to produce a 4-(trifluoromethylthio)aniline with a high yield by using raw materials that can easily be obtained industrially and using general purpose production facilities.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: March 19, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshitomo Tohyama, Kengo Kanematsu
  • Publication number: 20120245388
    Abstract: There are provided a 4-(trichloromethylthio)aniline represented by the general formula (II): wherein R1 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R2 each independently represents a halogen atom, an alkyl group having 1 to 3 carbon atoms, or a perfluoroalkyl group having 1 to 3 carbon atoms, R3 represents a formyl group, an acetyl group, or a trifluoroacetyl group, and m represents an integer of 0 to 4, a method for producing the same, and a method for producing a 4-(trifluoromethylthio)aniline derivative using the 4-(trichloromethylthio)aniline. It becomes possible to produce a 4-(trifluoromethylthio)aniline with a high yield by using raw materials that can easily be obtained industrially and using general purpose production facilities.
    Type: Application
    Filed: June 8, 2012
    Publication date: September 27, 2012
    Inventors: Yoshitomo TOHYAMA, Kengo Kanematsu
  • Publication number: 20100331578
    Abstract: There are provided a 4-(trichloromethylthio)aniline represented by the general formula (II): wherein R1 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R2 each independently represents a halogen atom, an alkyl group having 1 to 3 carbon atoms, or a perfluoroalkyl group having 1 to 3 carbon atoms, R3 represents a formyl group, an acetyl group, or a trifluoroacetyl group, and m represents an integer of 0 to 4, a method for producing the same, and a method for producing a 4-(trifluoromethylthio)aniline derivative using the 4-(trichloromethylthio)aniline. It becomes possible to produce a 4-(trifluoromethylthio)aniline with a high yield by using raw materials that can easily be obtained industrially and using general purpose production facilities.
    Type: Application
    Filed: July 1, 2008
    Publication date: December 30, 2010
    Inventors: Yoshitomo Tohyama, Kengo Kanematsu
  • Publication number: 20090176786
    Abstract: The present invention relates to a benzoylurea compound represented by formula (I): wherein, X and Y represent a fluorine atom or a chlorine atom, R1 represents a lower alkyl group or the like, R2 represents a lower alkyl group, R3 represents a halogen atom or the like, R4 represents an alkylthio group optionally substituted with one or more of halogen atoms, or a salt thereof, and use thereof for controlling pests and the like.
    Type: Application
    Filed: October 16, 2006
    Publication date: July 9, 2009
    Inventors: Masato Konobe, Shigeyuki Itoh, Norihisa Sakamoto, Araki Tomohiro, Yoshitomo Tohyama
  • Patent number: 7223862
    Abstract: The present invention provides a process for producing the pyridine compound [d]: [wherein R3 and R4 are as defined below], which has an excellent herbicidal activity, by making a pyridine compound [a]: [wherein R1 represents a C1–C6 alkoxy group, R3 represents a halogen atom, cyano group or nitro group, and R4 ?????????? ? ???????? ???? ?? ??????? ????] ????? ???? ?? ?-diazoester compound [f]: N2CHCOR1[f] [wherein R1 is defined above] in the presence of an acid.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: May 29, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshitomo Tohyama, Takashi Komori, Yuzuru Sanemitsu
  • Patent number: 7189855
    Abstract: 3-Phenoxy-2-pyridone compound can be produced by making the amide compound of the formula (1): wherein R is optionally substituted phenyl; react with a malonoaldehyde derivative such as 3-alkoxypropenal and the like in the presence of a protonic acid.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: March 13, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takashi Furukawa, Noritada Matsuo, Yoshitomo Tohyama
  • Patent number: 7157579
    Abstract: The present invention provides a process for producing the pyridine compound [d]: [wherein R3 and R4 are as defined below], which has an excellent herbicidal activity, by making a pyridine compound [a]: [wherein R1 represents a C1–C6 alkoxy group, R3 represents a halogen atom, cyano group or nitro group, and R4 represents a hydrogen atom or halogen atom] react with an ?-diazoester compound [f]: N2CHCOR1[f] [wherein R1 is defined above] in the presence of an acid.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: January 2, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshitomo Tohyama, Takashi Komori, Yuzuru Sanemitsu
  • Publication number: 20060189484
    Abstract: The present invention provides a process for producing the pyridine compound [d]: [wherein R3 and R4 are as defined below], which has an excellent herbicidal activity, by making a pyridine compound [a]: [wherein R1 represents a C1-C6 alkoxy group, R3 represents a halogen atom, cyano group or nitro group, and R4 ?????????? ? ???????? ???? ?? ??????? ????] ????? ???? ?? ?-diazoester compound [f]: N2CHCOR1??[f] [wherein R1 is defined above] in the presence of an acid.
    Type: Application
    Filed: May 9, 2006
    Publication date: August 24, 2006
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Yoshitomo Tohyama, Takashi Komori, Yuzuru Sanemitsu
  • Publication number: 20050154210
    Abstract: 3-Phenoxy-2-pyridone compound can be produced by making the amide compound of the formula (1): wherein R is optionally substituted phenyl; react with a malonoaldehyde derivative such as 3-alkoxypropenal and the like in the presence of a protonic acid.
    Type: Application
    Filed: June 20, 2003
    Publication date: July 14, 2005
    Inventors: Takashi Furukawa, Noritada Matsuo, Yoshitomo Tohyama
  • Publication number: 20040254077
    Abstract: The present invention provides a process for producing the pyridine compound [d]: 1
    Type: Application
    Filed: February 6, 2004
    Publication date: December 16, 2004
    Inventors: Yoshitomo Tohyama, Takashi Komori, Yuzuru Sanemitsu
  • Patent number: 6667413
    Abstract: The present invention relates to an uracil compound of the formula [I]: wherein W represents oxygen, sulfur, imino or C1 to C3 alkylimino; Y represents oxygen, sulfur, imino or C1 to C3 alkylimino; R1 represents C1 to C3 alkyl or C1 to C3 haloalkyl; R2 represents C1 to C3 alkyl; R4 represents hydrogen or methyl; R5 represents C1 to C6 alkyl, C1 to C6 haloalkyl, or the like; X1 represents halogen, cyano or nitro; X2 represents hydrogen or halogen; and each of X3 and X4 independently represents hydrogen, halogen, C1 to C6 alkyl, or the like. The present compound has an excellent herbicidal activity.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: December 23, 2003
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshitomo Tohyama, Yuzuru Sanemitsu, Tomohiko Gotou
  • Publication number: 20030130124
    Abstract: The present invention relates to an uracil compound of the formula [I]: 1
    Type: Application
    Filed: July 12, 2002
    Publication date: July 10, 2003
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yoshitomo Tohyama, Yuzuru Sanemitsu, Tomohiko Gotou
  • Patent number: 6537948
    Abstract: The present invention relates to an uracil compound of the formula [I]: [wherein, Q—R3 represents a R3-substituted group of a 5-membered or 6-membered heterocyclic ring having one or two nitrogen selected from the group consisting of moieties represented in the specification (wherein, this heterocyclic ring may be substituted with at least one kind of substituent, Y represents oxygen, sulfur, imino or C1 to C3 alkylimino, R1 represents C1 to C3 alkyl or C1 to C3 haloalkyl, R2 represents C1 to C3 alkyl, R3 represents carboxy C1 to C6 alkyl, C1 to C6 alkoxycarbonyl C1 to C6 alkyl, OR7, SR8, N(R9)R10 or the like, X1 represents halogen, cyano, thiocarbamoyl or nitro, X2 represents hydrogen or halogen. {wherein, each of R7, R8 and R10 independently represents carboxy C1 to C6 alkyl, C1 to C6 alkoxycarbonyl C1 to C6 alkyl, C1 to C6 haloalkoxycarbonyl C1 to C6 alkyl, or the like, and R9 represents hydrogen or C1 to C6 alkyl.}.].
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: March 25, 2003
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshitomo Tohyama, Yuzuru Sanemitsu
  • Patent number: 6451740
    Abstract: The present invention relates to an uracil compound of the formula [I]: wherein W represents oxygen, sulfur, imino or C1 to C3 alkylimino; Y represents oxygen, sulfur, imino or C1 to C3 alkylimino; R1 represents C1 to C3 alkyl or C1 to C3 haloalkyl; R2 represents C1 to C3 alkyl; R4 represents hydrogen or methyl; R5 represents C1 to C6 alkyl, C1 to C6 haloalkyl, or the like; X1 represents halogen, cyano or nitro; X2represents hydrogen or halogen; and each of X3 and X4 independently represents hydrogen, halogen, C1 to C6 alkyl, or the like. The present compound has an excellent herbicidal activity.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: September 17, 2002
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshitomo Tohyama, Yuzuru Sanemitsu, Tomohiko Gotou
  • Publication number: 20020013466
    Abstract: The present invention relates to an uracil compound of the formula [I]: 1
    Type: Application
    Filed: December 5, 2000
    Publication date: January 31, 2002
    Inventors: Yoshitomo Tohyama, Yuzuru Sanemitsu, Tomohiko Gotou
  • Patent number: 6107250
    Abstract: The present invention provides novel pyridazin-3-one derivatives of general formula (1): ##STR1## wherein R.sup.1 is haloalkyl; R.sup.2 and R.sup.3 are independently hydrogen, alkl, haloalkyl, or alkoxyalkyl; X is hydrogen or halogen; Y is halogen, nitro, cyano, or trihalomethyl; Z.sup.1 is oxygen, sulfur, CH.sub.2, or NH; R.sup.4 is hydrogen, halogen, or alkyl; and R.sup.5 is cycoalkyl, formyl, benzyl, alkyl with an epoxy group, or other substituents as defined in the description, and herbicides containing them as active ingredients.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: August 22, 2000
    Assignee: Sumitomo Chemical Company Limited
    Inventors: Yoshitomo Tohyama, Masayuki Enomoto, Hisayuki Hoshi