Patents by Inventor Masamitsu Tsukamoto

Masamitsu Tsukamoto 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).

  • Publication number: 20040018942
    Abstract: The compound of the formula 1
    Type: Application
    Filed: July 17, 2002
    Publication date: January 29, 2004
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Masamitsu Tsukamoto, Mark Read
  • Publication number: 20030195118
    Abstract: Substituted aryl ether derived compounds represented by the general structure (I) are described.
    Type: Application
    Filed: March 3, 2003
    Publication date: October 16, 2003
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Sandeep Gupta, Masamitsu Tsukamoto, Mark Read
  • Publication number: 20030187264
    Abstract: This invention relates to a method for producing compounds of the formula (I) or their salts: 1
    Type: Application
    Filed: October 26, 2001
    Publication date: October 2, 2003
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Fumio Kanamori, Masamitsu Tsukamoto
  • Patent number: 6617282
    Abstract: A process for producing 3-phenyl-2,4(1H,3H)-pyrimidinediones having the general formula I and their salts which comprises reacting the isocyanates represented by the general formula (II) and the substituted hydrazono esters represented by the general formula (III) in the presence of a base. These compounds are useful as herbicides, defoliants and desiccants.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: September 9, 2003
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Mark Read, Masamitsu Tsukamoto, Sandeep Gupta
  • Patent number: 6613718
    Abstract: Substituted aryl ether derived compounds represented by the general structure (I) are described. X and Y are independent of each other and are represented by hydrogen, halogen, cyano, nitro, (C1-4)alkyl, (C1-4)haloalkyl, or (C1-4)haloalkoxy; Z is oxygen or sulfur; Q is selected form Q1 to Q6; A is oxygen, sulfur, or imino; R1 is hydrogen, (C1-4)alkyl, (C1-4)haloalkyl, or amino and can be independent of each other in a single molecule; R2 and R3 are independent of each other and may be selected from the group consisting of hydrogen, halogen, cyano, nitro, (C1-4)alkyl, (C1-4)haloalkyl, (C2-6)alkenyl, (C2-6)haloalkenyl and amino which may be optionally substituted with (C1-4)alkyl or (C1-4)haloalkyl; Ar is substituted or unsubstituted carbocyclic or heterocyclic aromatic ring being at least a five or six membered ring. This ring can be fused with another substituted or unsubstituted five or six membered carbocyclic or heterocyclic ring.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: September 2, 2003
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Sandeep Gupta, Masamitsu Tsukamoto, Mark Read
  • Publication number: 20030130122
    Abstract: Substituted aryl ether derived compounds represented by the general structure (1) are described.
    Type: Application
    Filed: December 5, 2001
    Publication date: July 10, 2003
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Sandeep Gupta, Masamitsu Tsukamoto, Mark Read
  • Patent number: 6573218
    Abstract: A compound of the formula (Ia): or its salts, in which the variables are as described in the disclosure; herbicidal compositions of said compounds, herbicidal processes using said compounds, defoliant processes using said compounds, and processes for preparing said compounds.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: June 3, 2003
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Masamitsu Tsukamoto, Sandeep Gupta, Shao-Yong Wu, Bai-Ping Ying, David A. Pulman
  • Publication number: 20030096990
    Abstract: A process for producing 3-phenyl-2,4(1H,3H)-pyrimidinediones having the general formula I and their salts 1
    Type: Application
    Filed: September 26, 2001
    Publication date: May 22, 2003
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Mark Read, Masamitsu Tsukamoto, Sandeep Gupta
  • Patent number: 6545161
    Abstract: Novel herbicidal and defoliant substituted aniline derived compounds represented by general structure (I) are described. W, X, Y, Z, and Q are as defined in the disclosure. Also described are the processes for the manufacture of these compounds and agriculturally suitable compositions containing these as active ingredients which are useful as herbicides for general or selective pre-emergent or post-emergent control of undesired plant species and defoliants at very low concentrations of these biologically active compounds.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: April 8, 2003
    Assignee: Isk Americas Incorporated
    Inventors: Sandeep Gupta, Shao-Yong Wu, Masamitsu Tsukamoto, David A. Pulman, Bai-Ping Ying
  • Patent number: 6479435
    Abstract: Diaryl ether compounds useful in the control of weeds are described. An exemplary compound is represented by the general formula (I): In this formula Q is represented by Q1 X and Y represent a hydrogen atom, halogen atom, cyano group, nitro group or (C1-6)haloalkyl group; R1 is halogen; R2 and R3 represent a hydrogen atom, a (C1-6)alkyl group or a (C1-6)haloalkyl group . Methods of making the compounds are also described.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: November 12, 2002
    Assignee: ISK Americas Incorporated
    Inventors: David A. Pulman, Bai-Ping Ying, Shao-Yong Wu, Sandeep Gupta, Hiroshi Shimoharada, Masamitsu Tsukamoto
  • Publication number: 20020161224
    Abstract: Diaryl ether compounds useful in the control of weeds are described.
    Type: Application
    Filed: February 9, 2001
    Publication date: October 31, 2002
    Inventors: David A. Pulman, Bai-Ping Ying, Shao-Yong Wu, Sandeep Gupta, Hiroshi Shimoharada, Masamitsu Tsukamoto
  • Publication number: 20020133007
    Abstract: Novel herbicidal and defoliant substituted aniline derived compounds represented by general structure (I) 1
    Type: Application
    Filed: August 16, 2001
    Publication date: September 19, 2002
    Applicant: ISK AMERICAS INCORPORATED
    Inventors: Sandeep Gupta, Shao-Yong Wu, Masamitsu Tsukamoto, David A. Pulman, Bai-Ping Ying
  • Patent number: 6355799
    Abstract: Novel herbicidal and defoliant substituted aniline derived compounds represented by general structure (I) are described. W, X, Y, Z, and Q are as defined in the disclosure. Also described are the processes for the manufacture of these compounds and agriculturally suitable compositions containing these as active ingredients which are useful as herbicides for general or selective pre-emergent or post-emergent control of undesired plant species and defoliants at very low concentrations of these biologically active compounds.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: March 12, 2002
    Assignee: ISK Americas Incorporated
    Inventors: Sandeep Gupta, Shao-Yong Wu, Masamitsu Tsukamoto, David A. Pulman, Bai-Ping Ying
  • Patent number: 6333296
    Abstract: Diaryl ether compounds useful in the control of weeds are described. An exemplary compound is represented by the general formula (I): In this formula Q is represented by Q9: X and Y represent a hydrogen atom, halogen atom, cyano group, nitro group or (C1-6)haloalkyl group. A1 and A2 are independently oxygen or sulfur atoms. R9 and R10 represent a hydrogen atom, a (C1-6)alkyl group, an acyl group, or a (C1-6)alkylsulfonyl group; or R9 and R10 may form a ring consisting of polymethylene, (CH2)m groups, where m is an integer of 2, 3, 4 or 5, together with the nitrogen atom of NR9R10, which may or may not have a (C1-6)alkyl substituent. Methods of making the compounds are also described.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: December 25, 2001
    Assignee: ISK Americas Incorporated
    Inventors: David A. Pulman, Bai-Ping Ying, Shao-Yong Wu, Sandeep Gupta, Hiroshi Shimoharada, Masamitsu Tsukamoto
  • Patent number: 6303543
    Abstract: A compound represented by the formula (I) or its salt and herbicidal and desiccant use thereof: wherein X, Y are independently hydrogen, halogen, cyano, nito, or (C1-6)haloalkyl; Z is oxygen or sulfur; and
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: October 16, 2001
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: David A. Pulman, Bai-Ping Ying, Shao-Yong Wu, Sandeep Gupta, Masamitsu Tsukamoto, Takahiro Haga
  • Patent number: 6294503
    Abstract: Novel fused heterocycle compounds represented by the formula (I) are described. Q, R, W, —L—X—, Y, Z, and n are as defined in the disclosure. Also described are the processes for the manufacture of these compounds and agriculturally suitable compositions containing these as active ingredients which are useful as herbicides for general or selective pre-emergent or post-emergent control of undesired plant species.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: September 25, 2001
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Sandeep Gupta, Shao-Yong Wu, Masamitsu Tsukamoto, Bai-Ping Ying, David A. Pulman
  • Patent number: 6121201
    Abstract: A compound represented by the formula (I) or its salt and herbicidal and desiccant use thereof: ##STR1## wherein X, Y are independently hydrogen, halogen, cyano, nitro, or (C.sub.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: September 19, 2000
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: David A. Pulman, Bai-Ping Ying, Shao-Yong Wu, Sandeep Gupta, Masamitsu Tsukamoto, Takahiro Haga
  • Patent number: 5380834
    Abstract: An immuno-suppressive agent containing, as an effective component, an, enopyranose derivative of the following formula (I) or its salt: ##STR1## wherein R.sup.1 is a hydrogen atom, alkyl which may be substituted, alkenyl, alkynyl, --OSO.sub.2 R.sup.7, a halogen atom, --OCOR.sup.7, --NHCOR.sup.8, alkoxy, phenyl which may be substituted or a saccharose residue, R.sup.2 is a hydrogen atom or alkyl, R.sup.3 is a hydrogen atom or a halogen atom, R.sup.4 is a hydrogen atom, --COR.sup.9, silyl which may be substituted or alkyl which may be substituted, one of R.sup.5 and R.sup.6 is hydroxyl, alkoxy which may be substituted, a saccharose residue, cycloalkyloxy which may be substituted or --OCOR.sup.10 and the other is a hydrogen atom or alkyl which may be substituted, or R.sup.4 and R.sup.5 together form a single bond, while R.sup.6 is a hydrogen atom or alkyl which may be substituted, each of R.sup.7, R.sup.9 and R.sup.10 is alkyl or phenyl which may be substituted, R.sup.
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: January 10, 1995
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Sadanori Mizukoshi, Fuminori Kato, Masamitsu Tsukamoto, Kenji Kon