Patents by Inventor Sohei Asakura

Sohei Asakura 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: 8198217
    Abstract: A mixed composition for weeding useful as a herbicide which is effective against a wide spectrum of weeds, is highly active, has excellent residual activity, and is highly safe for useful plants. It is characterized by containing as an active ingredient a combination of (A) a compound selected among a difluoromethanesulfonylanilide compound represented by the general formula (I): (wherein R1 is hydrogen, C1-6 alkyl, or C2-6 alkoxyalkyl) and salts of the compound and (B) at least one member selected among herbicidal aromatic-ring-containing compounds, e.g., indanofan, and herbicidal nitrogenous heterocyclic compounds, e.g., TH-547, nicosulfuron, Flutiacet-methyl, and atrazine.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: June 12, 2012
    Assignee: Kumiai Chemical Industry Co., Ltd.
    Inventors: Shuji Ohno, Sohei Asakura, Yoshihiro Yamaji, Ryo Hanai, Toshihiro Ikeuchi
  • Patent number: 8076487
    Abstract: A pyridone derivative represented by Formula [1] or an agriculturally acceptable salt thereof: wherein R1 is a C1-6 alkyl group, a C2-6 alkenyl group, a C2-6 alkynyl group, or the like; R2 and R3 are each independently a hydrogen atom, a nitro group, a cyano group, or the like; and A is a group represented by Formula A-1, Formula A-2, Formula A-3, Formula A-4, or Formula A-5: The compounds represented by general formula [1] control various weeds growing in upland fields, orchards, paddy fields, and non-crop lands while showing high safety to useful plants and crops.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: December 13, 2011
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Fumiaki Takabe, Shunichirou Fukumoto, Ryu Kajiki, Sohei Asakura, Ryohei Ueno, Masami Kobayashi, Satoru Takahashi, Norihisa Yonekura, Ryo Hanai, Takashi Mitsunari
  • Publication number: 20110178299
    Abstract: The present invention aims at providing an optically active difluoromethanesulfonanilide derivative exhibiting an excellent herbicidal activity at a low dose. An optically active (R)-2?-(4,6-dimethoxy-pyrimidin-2-yl)hydroxymethyl-1,1-difluoromethanesulfonanilide derivative is represented by the formula (I) (in the formula, R1 is a hydrogen atom, a C1-C4 alkyl group or a C1-C4 alkoxy C1-C4 alkyl group). and this difluoromethanesulfonanilide derivative is produced by subjecting to optical resolution a racemate of 2?-(4,6-dimethoxypyrimidin-2-yl)hydroxymethyl-1,1-difluoromethanesul-fonanilide derivative.
    Type: Application
    Filed: June 10, 2009
    Publication date: July 21, 2011
    Applicants: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Jun Inoue, Hiroshi Kawasaki, Sohei Asakura
  • Publication number: 20100222592
    Abstract: A pyridone derivative represented by Formula [1] or an agriculturally acceptable salt thereof: wherein R1 is a C1-6 alkyl group, a C2-6 alkenyl group, a C2-6 alkynyl group, or the like; R2 and R3 are each independently a hydrogen atom, a nitro group, a cyano group, or the like; and A is a group represented by Formula A-1, Formula A-2, Formula A-3, Formula A-4, or Formula A-5: The compounds represented by general formula [1] control various weeds growing in upland fields, orchards, paddy fields, and non-crop lands while showing high safety to useful plants and crops.
    Type: Application
    Filed: January 31, 2007
    Publication date: September 2, 2010
    Applicants: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Fumiaki Takabe, Shunichirou Fukumoto, Ryu Kajiki, Sohei Asakura, Ryohei Ueno, Masami Kobayashi, Satoru Takahashi, Norihisa Yonekura, Ryo Hanai, Takashi Mitsunari
  • Publication number: 20100144526
    Abstract: A mixed composition for weeding useful as a herbicide which is effective against a wide spectrum of weeds, is highly active, has excellent residual activity, and is highly safe for useful plants. It is characterized by containing as an active ingredient a combination of (A) a compound selected among a difluoromethanesulfonylanilide compound represented by the general formula (I): (wherein R1 is hydrogen, C1-6 alkyl, or C2-6 alkoxyalkyl) and salts of the compound and (B) at least one member selected among herbicidal aromatic-ring-containing compounds, e.g., indanofan, and herbicidal nitrogenous heterocyclic compounds, e.g., TH-547, nicosulfuron, Flutiacet-methyl, and atrazine.
    Type: Application
    Filed: August 6, 2008
    Publication date: June 10, 2010
    Inventors: Shuji Ohno, Sohei Asakura, Yoshihiro Yamaji, Ryo Hanai, Toshihiro Ikeuchi