Patents by Inventor Kazutoshi Kikkawa

Kazutoshi Kikkawa 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: 8575190
    Abstract: The present invention provides a method for preventing or ameliorating skin psoriasis by applying as an active ingredient, a compound represented by general formula (I) or a salt thereof: (wherein R1, R2, and R3 simultaneously or separately represent a lower alkyl, lower alkenyl, lower alkynyl, aralkyl, araryl, or phenyl group, or a hydrogen atom).
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 5, 2013
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Ayako Kamimura, Toshikazu Kamiya, Masahiko Nakano, Kazutoshi Kikkawa
  • Patent number: 8097635
    Abstract: An object of the present invention is to provide a safe and highly effective insulin resistance improving agent or therapeutic agent for type II diabetes. According to the present invention, an insulin resistance improving agent or a therapeutic agent for type II diabetes comprising a compound represented by general formula (I) (wherein R1, R2, and R3 are the same as or different from each other, and each represents lower alkyl, lower alkenyl, lower alkynyl, aralkyl, araryl, phenyl, or a hydrogen atom) or a salt thereof as an active ingredient can be provided.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: January 17, 2012
    Assignees: Kyowa Hakko Bio Co., Ltd., Mitsubishi Gas Chemical Company, Inc.
    Inventors: Mika Sumi, Fumiko Ogino, Toshikazu Kamiya, Masahiko Nakano, Kazutoshi Kikkawa
  • Publication number: 20100261749
    Abstract: It is an object of the present invention to provide a safe and highly effective preventing or ameliorating agent for skin psoriasis. The present invention provides a preventing or ameliorating agent for skin psoriasis, containing, as an active ingredient, a compound represented by general formula (I) or a salt thereof: (wherein R1, R2, and R3 simultaneously or separately represent a lower alkyl, lower alkenyl, lower alkynyl, aralkyl, araryl, or phenyl group, or a hydrogen atom).
    Type: Application
    Filed: November 12, 2008
    Publication date: October 14, 2010
    Applicants: KYOWA HAKKO BIO CO., LTD., MITSUBISHI GAS CHEMICAL CO., LTD.
    Inventors: Ayako Kamimura, Toshikazu Kamiya, Masahiko Nakano, Kazutoshi Kikkawa
  • Publication number: 20100190815
    Abstract: It is an objective of the present invention to provide a safe and highly effective hypertension-ameliorating agent. The present invention provides a hypertension-ameliorating agent, comprising a compound represented by general formula (I) (wherein R1, R2, and R3 are the same as or different from each other, and each represents lower alkyl, lower alkenyl, lower alkynyl, aralkyl, araryl, phenyl, or a hydrogen atom) or a salt thereof as an active ingredient.
    Type: Application
    Filed: September 7, 2007
    Publication date: July 29, 2010
    Applicants: KYOWA HAKKO BIO CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Fumiko Ogino, Toshikazu Kamiya, Masahiko Nakano, Kazutoshi Kikkawa
  • Publication number: 20100093780
    Abstract: An object of the present invention is to provide a safe and highly effective insulin resistance improving agent or therapeutic agent for type II diabetes. According to the present invention, an insulin resistance improving agent or a therapeutic agent for type II diabetes comprising a compound represented by general formula (I) (wherein R1, R2, and R3 are the same as or different from each other, and each represents lower alkyl, lower alkenyl, lower alkynyl, aralkyl, araryl, phenyl, or a hydrogen atom) or a salt thereof as an active ingredient can be provided.
    Type: Application
    Filed: September 19, 2007
    Publication date: April 15, 2010
    Applicants: KYOWA HAKKO BIO CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Mika Sumi, Fumiko Ogino, Toshikazu Kamiya, Masahiko Nakano, Kazutoshi Kikkawa
  • Publication number: 20090192312
    Abstract: There are provided a brain function improving agent having an effect of improving learning and memory abilities, and a functional food containing the function improving agent. A preparation comprising a pyrroloquinoline quinone or a salt thereof alone or in combination with coenzyme Q10 and a functional food containing the preparation can improve learning and memory abilities decreased due to brain function disorders caused by various factors.
    Type: Application
    Filed: March 29, 2007
    Publication date: July 30, 2009
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kazutoshi Kikkawa, Masahiko Nakano, Shiro Urano
  • Patent number: 5409957
    Abstract: Disclosed are a phenoxyalkylamine represented by the following general formula I and a salt of said phenoxyalkylamine represented by the following general formula II: ##STR1## wherein R represents a linear saturated hydrocarbon having 7 to 12 carbon atoms, n is an integer of from 1 to 5, m is an integer of from 2 to 4, and HX represents a mineral acid.These compounds have strong bacteriostatic and bactericidal actions for plants with no phytotoxicity. Therefore, these compounds are effectively used as the active ingredient of an agricultural and horticultural bactericide.
    Type: Grant
    Filed: March 23, 1993
    Date of Patent: April 25, 1995
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Mitsunori Oda, Kazutoshi Kikkawa, Akinori Tanaka, Satoko Imaruoka, Shigeo Yoshinaka
  • Patent number: 5331011
    Abstract: Disclosed is an N-benzyl-N-phenoxyethylamine selected from the group consisting of the N-benzyl-N-phenoxyethylamine represented by the following formula (I): ##STR1## and an agriculturally acceptable acid addition salt represented by the following formula (II): ##STR2## wherein m represents a number of 1 or 2 with a proviso that when m is 1 and a chlorine atom in the ring A is present at para(4)-position of the ring A, two chlorine atoms in the ring B are present at 2,3-, 2,5-, 2,6-, 3,4- or 3,5-positions of the ring B, and HX represents an acid.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: July 19, 1994
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Mitsunori Oda, Kazutoshi Kikkawa, Akinori Tanaka, Satoko Imaruoka, Shigeo Yoshinaka
  • Patent number: 5221694
    Abstract: Disclosed is an N-benzyl-N-phenoxyethylamine selected from the group consisting of the N-benzyl-N-phenoxyethylamine represented by the following formula (I): ##STR1## and an agriculturally acceptable acid addition salt represented by the following formula (II): ##STR2## wherein m represents a number of 1 or 2 with a proviso that when m is 1 and a chlorine atom in the ring A is present at para(4)-position of the ring A, two chlorine atoms in the ring B are present at 2,3-, 2,5-, 2,6-, 3,4- or 3,5-positions of the ring B and HX represents an acid.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: June 22, 1993
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Mitsunori Oda, Kazutoshi Kikkawa, Akinori Tanaka, Satoko Imaruoka, Shigeo Yoshinaka
  • Patent number: 4334066
    Abstract: A pyran derivative represented by the formula ##STR1## wherein R.sub.1 and R.sub.4 are each the same or different alkyl having 1 to 6 carbon atoms, R.sub.2 and R.sub.3, when attached to a nitrogen atom, forms a saturated hetrocyclic ring which has as a hetero atom a nitrogen atom is addition to the nitrogen atom attached to R.sub.2 and R.sub.3, or oxygen atom, and an acid addition salt thereof. The compounds have antibacterial and insecticidal action.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: June 8, 1982
    Assignee: Otsuka Kagaku Yakuhin Kabushiki Kaisha
    Inventors: Yasuo Shimizu, Hisashi Takao, Shoji Asano, Shuya Shimada, Kazutoshi Kikkawa