Patents by Inventor Tadakazu Tamai

Tadakazu Tamai 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: 20170189377
    Abstract: Degranulation suppressors are provided that are effective against allergic disease and osteoarthritis. The degranulation suppressors contain chlorophyll c.
    Type: Application
    Filed: March 7, 2017
    Publication date: July 6, 2017
    Applicant: MARUHA NICHIRO CORPORATION
    Inventors: Hisashi YOSHIOKA, Akira KAMATA, Tatsuya KONISHI, Hiroshi ODA, Tadakazu TAMAI
  • Patent number: 9693996
    Abstract: Degranulation suppressors are provided that are effective against allergic disease and osteoarthritis. The degranulation suppressors contain chlorophyll c.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: July 4, 2017
    Assignee: MARUHA NICHIRO CORPORATION
    Inventors: Hisashi Yoshioka, Akira Kamata, Tatsuya Konishi, Hiroshi Oda, Tadakazu Tamai
  • Patent number: 9636326
    Abstract: Degranulation suppressors are provided that are effective against allergic disease and osteoarthritis. The degranulation suppressors contain chlorophyll c.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: May 2, 2017
    Assignee: MARUHA NICHIRO CORPORATION
    Inventors: Hisashi Yoshioka, Akira Kamata, Tatsuya Konishi, Hiroshi Oda, Tadakazu Tamai
  • Publication number: 20140336234
    Abstract: Degranulation suppressors are provided that are effective against allergic disease and osteoarthritis. The degranulation suppressors contain chlorophyll c.
    Type: Application
    Filed: December 28, 2012
    Publication date: November 13, 2014
    Inventors: Hisashi Yoshioka, Akira Kamata, Tatsuya Konishi, Hiroshi Oda, Tadakazu Tamai
  • Patent number: 7951782
    Abstract: Disclosed is a composition comprising, as an active ingredient, an enzyme digest that is produced by digesting a basic fraction of an animal-derived cartilage extract with an enzyme. Also disclosed is a polypeptide composition comprising, as an active ingredient, at least one polypeptide selected from specific polypeptides including a polypeptide comprising an amino acid sequence depicted in any one of SEQ ID NOs: 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: May 31, 2011
    Assignee: Maruha Nichiro Seafoods, Inc
    Inventors: Itsuki Murota, Tadakazu Tamai, Takashi Baba, Kenji Sato
  • Patent number: 7906557
    Abstract: The present invention provides an oral preventive or therapeutic agent for skin damage, containing diacylglyceryl ether as an active ingredient represented by the formula (I): wherein R1 denotes C12-24 aliphatic hydrocarbon group having a degree of unsaturation of between 0 and 2; R2 denotes C12-24 acyl group having a degree of unsaturation of between 0 and 6; and R3 denotes C12-24 acyl group having a degree of unsaturation of between 0 and 6.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: March 15, 2011
    Assignee: Maruha Nichiro Seafoods, Inc.
    Inventors: Masazumi Nishikawa, Itsuki Murota, Tadakazu Tamai, Kazuyoshi Yoshikai
  • Publication number: 20100004182
    Abstract: Disclosed is a composition comprising, as an active ingredient, an enzyme digest that is produced by digesting a basic fraction of an animal-derived cartilage extract with an enzyme. Also disclosed is a polypeptide composition comprising, as an active ingredient, at least one polypeptide selected from specific polypeptides including a polypeptide comprising an amino acid sequence depicted in any one of SEQ ID NOs: 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10.
    Type: Application
    Filed: September 28, 2006
    Publication date: January 7, 2010
    Applicant: MARUHA CORPORATION
    Inventors: Itsuki Murota, Tadakazu Tamai, Takashi Baba, Kenji Sato
  • Publication number: 20060142391
    Abstract: The present invention relates to PPAR?-activating pharmaceutical compositions comprising a hydroxylated derivative of a C20-22 polyunsaturated fatty acid or a pharmaceutically acceptable salt thereof, preferably PPAR?-activating pharmaceutical compositions containing a hydroxylated derivative of docosahexaenoic acid (DHA) or a hydroxylated derivative of eicosapentaenoic acid (EPA) or a pharmaceutically acceptable salt thereof, as well as uses of the PPAR?-activating pharmaceutical compositions for treating circulatory diseases, arteriosclerosis, lipid metabolism disorder, diabetes and inflammatory diseases.
    Type: Application
    Filed: March 21, 2006
    Publication date: June 29, 2006
    Inventors: Tadakazu Tamai, Kazuyoshi Yoshikai, Masazumi Nishikawa
  • Publication number: 20050220844
    Abstract: The present invention provides an oral preventive or therapeutic agent for skin damage, containing diacylglyceryl ether as an active ingredient represented by the formula (I): wherein R1 denotes C12-24 aliphatic hydrocarbon group having a degree of unsaturation of between 0 and 2; R2 denotes C12-24 acyl group having a degree of unsaturation of between 0 and 6; and R3 denotes C12-24 acyl group having a degree of unsaturation of between 0 and 6.
    Type: Application
    Filed: June 17, 2003
    Publication date: October 6, 2005
    Inventors: Masazumi Nishikawa, Itsuki Murota, Tadakazu Tamai, Kazuyoshi Yoshikai
  • Publication number: 20050222010
    Abstract: A composition for treating or preventing hyperuricemia which contains a chondroitin sulfate protein complex as an effective ingredient. Because of having an effect of lowering serum uric acid level, this composition makes it possible to provide a novel method of the treatment, the prevention and the relief of gout.
    Type: Application
    Filed: May 16, 2003
    Publication date: October 6, 2005
    Applicant: Maruha Corporation
    Inventors: Itsuki Murota, Masazumi Nishikawa, Tadakazu Tamai, Kazuyoshi Yoshiaki, Minoru Kihasa
  • Patent number: 6949553
    Abstract: The present invention relates to aliphatic compounds of the formula I, or stereoisomers thereof, or their pharmaceutically acceptable salts: wherein A represents an optionally substituted CH3CnH(2n-2m)— (wherein n denotes an integer of 4 to 22, and m represents an unsaturation number which is an integer of 0 to 7), l represents an integer of 0 to 10, s represents 0 or 1, provided that when s is 0, p+q=4 or 5, but when s is 1, p+q=3 or 4, and in each case, either p or q is an integer of 1 or more, R represents an alkyl group having 1 to 10 carbon atoms which may be straight-chain or branched-chain, and RA represents hydrogen or an alkyl group having 1 to 10 carbon atoms which may be straight-chain or branched-chain, and their use in suppression of platelet aggregation, in suppression of inflammation, and in prevention and treatment of circulatory diseases.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: September 27, 2005
    Assignee: Maruha Corporation
    Inventors: Tadakazu Tamai, Kazuyoshi Yoshikai, Masazumi Nishikawa, Kunio Ogasawara, Itsuki Murota
  • Patent number: 6894034
    Abstract: Sebum production inhibitors containing as an active ingredient a compound of general formula (1) below having a glucuronic acid derivative and a glucosamine derivative in the structure or a pharmacologically acceptable salt thereof
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: May 17, 2005
    Assignee: Maruha Corporation
    Inventors: Nobuaki Yatsuka, Nobuyuki Sato, Masazumi Nishikawa, Tadakazu Tamai, Shigeru Moriyama
  • Patent number: 6835846
    Abstract: The present invention provides an aliphatic compound represented by the following formula (I) or pharmacologically acceptable salts thereof: where n denotes an integer of 1 to 11, and 1 denotes an integer of 1 to 16, the aliphatic compound being an optical isomer of the (2R,3S,2′S) configuration when the 8-position thereof is a double bond, or an optical isomer of the (2S,3R,2′RS) configuration when the 8-position is a single bond; methods for producing the compound or pharmacologically acceptable salts thereof; and uses of the compound in the treatment of cardiovascular diseases (e.g. arteriosclerosis, cardiac diseases), cancer, rheumatism, diabetic retinopathy, and respiratory diseases.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: December 28, 2004
    Assignee: Maruha Corporation
    Inventors: Tadakazu Tamai, Masazumi Nishikawa, Kenji Mori
  • Publication number: 20040176451
    Abstract: The present invention relates to PPAR&ggr;-activating pharmaceutical compositions comprising a hydroxylated derivative of a C20-22 polyunsaturated fatty acid or a pharmaceutically acceptable salt thereof, preferably PPAR&ggr;-activating pharmaceutical compositions containing a hydroxylated derivative of docosahexaenoic acid (DHA) or a hydroxylated derivative of eicosapentaenoic acid (EPA) or a pharmaceutically acceptable salt thereof, as well as uses of the PPAR&ggr;-activating pharmaceutical compositions for treating circulatory diseases, arteriosclerosis, lipid metabolism disorder, diabetes and inflammatory diseases.
    Type: Application
    Filed: December 17, 2003
    Publication date: September 9, 2004
    Inventors: Tadakazu Tamai, Kazuyoshi Yoshikai, Masazumi Nishikawa
  • Publication number: 20040162435
    Abstract: The present invention relates to aliphatic compounds of the formula I, or stereoisomers thereof, or their pharmaceutically acceptable salts: 1
    Type: Application
    Filed: December 17, 2003
    Publication date: August 19, 2004
    Inventors: Tadakazu Tamai, Kazuyoshi Yoshikai, Masazumi Nishikawa, Kunio Ogasawara, Itsuki Murota
  • Publication number: 20040014816
    Abstract: The present invention provides an aliphatic compound represented by the following formula (I) or pharmacologically acceptable salts thereof: 1
    Type: Application
    Filed: April 11, 2003
    Publication date: January 22, 2004
    Inventors: Tadakazu Tamai, Masazumi Nishikawa, Kenji Mori
  • Patent number: 6613897
    Abstract: {circle around (1)} Compounds of the following general formula (1) having a glucuronic acid derivative and a glucosamine derivative in the structure thereof, pharmacologically acceptable salts and solvates of the compounds, or solvates of the salts, {circle around (2)} a method for producing the compounds {circle around (1)}, {circle around (3)} a pharmaceutical composition containing the compounds {circle around (1)}, {circle around (4)} polymers having at least one of the compounds {circle around (1)} as a side chain structure, {circle around (5)} a coating agent containing the compound {circle around (1)} or the polymer as one of active ingredients, and {circle around (6)} molded products, artificial organs, medical devices, and equipment for cell culture, which have been produced using the polymer {circle around (4)} and/or the coating agent {circle around (5)}.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: September 2, 2003
    Assignee: Maruha Corporation
    Inventors: Nobuaki Yatsuka, Nobuyuki Sato, Shigeru Moriyama, Tadakazu Tamai, Masazumi Nishikawa
  • Patent number: 5298402
    Abstract: The present invention provides cell lines capable of indefinite growth which are produced by transforming leukocytes isolated from peripheral blood of fish with a oncogene, a method of establishing the cell line, a method of recovering immunologically active substances from the culture of the cell lines. It has been difficult to maintain continuous cultures of fish leukocytes. The present invention provides cell lines capable of indefinite growth and a method of producing immunologically active substances, e.g., immunologically acitive substances, using these cell lines.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: March 29, 1994
    Assignee: Taiyo Fishery Co., Ltd.
    Inventors: Tadakazu Tamai, Hiroki Murakami, Nobuyuki Sato, Shoji Kimura, Yasuhiko Sasamoto