Patents by Inventor Katsuya Ohata

Katsuya Ohata 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: 4778816
    Abstract: 5-(3-n-Butyloxalylaminophenyl) tetrazole having an excellent SRS-A release-inhibiting effect is used as an effective component for an anti-asthmatic agent, and a pharmaceutical preparation obtained by mixing the tetrazole with a specific dispersant such as polysorbate-80 in coexistence with a non-aqueous solvent shows high dissolubility and bioavailability.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: October 18, 1988
    Assignee: Wakamoto Pharmaceutical Co., Ltd.
    Inventors: Tooru Abe, Yukiyoshi Yanagihara, Takao Shida, Shigekatsu Kohno, Katsuya Ohata, Yoshiaki Ogasawara, Shinji Kageyama, Touru Oguma, Yoshihiro Tsuriya, Toshio Kuroda, Terumasa Hashimoto
  • Patent number: 4333926
    Abstract: Hemostatics, vascular stabilizers and anti-shock compositions containing at least one steryl-.beta.-D-glucoside or monopalmitates thereof, of the formula: ##STR1## in which R.sup.1 is .beta.-sitosteryl, campesteryl, stigmasteryl or cholesteryl, and R.sup.2 is hydrogen or palmitoyl. Methods of use are also described.
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: June 8, 1982
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Katsuya Ohata, Tadatoshi Nomura, Masayoshi Watanabe
  • Patent number: 4237132
    Abstract: A series of new 4,6-disubstituted 2-morpholinone derivatives were prepared either by a reaction of corresponding epoxide derivatives with phenylglycine derivatives or by the reaction of isopropanol derivatives with carboxylic acid derivatives. The new morpholinone derivatives are useful for the prevention or the treatment of arteriosclerosis.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: December 2, 1980
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Shoichi Chokai, Mitsuhiro Maehara, Katsuhide Saito, Takayuki Ozaki
  • Patent number: 4210671
    Abstract: A process for the preparation of amide derivatives of abietic acid, dehydroabietic acid, dihydroabietic acid or tetrahydroabietic acid which comprises reacting abietic acid, dehydroabietic acid, dihydroabietic acid or tetrahydroabietic acid or a reactive derivative thereof with an amine of the following formula:HNRR'wherein R and R' are each hydrogen, a straight chain or branched alkyl group having 3 to 15 carbon atoms, a lower alkenyl group, a cycloalkyl group, a phenyl group, a phenylalkyl group and a phenylalkyl group having a lower alkyl group at the .alpha.-position, with the proviso that such amines where both R and R' are hydrogen or where one of R and R' is hydrogen and the other is phenyl are excluded.The invention further comprises the resulting abietamide derivative reaction products, compositions containing effective blood serum cholesterol-reducing amounts of said abietamide derivatives and their use as anti-arteriosclerotic agents.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: July 1, 1980
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Kenji Sempuku, Koji Kitaguchi, Yukio Fujita, Yoshiaki Yoshikuni, Kohei Kura, Katsuhide Saito, Tamiki Mori, Yasuo Yasutomi
  • Patent number: 4162331
    Abstract: New carboxylic acid derivatives are proposed for use as agents in the treatment or prevention of arteriosclerosis. 1-(p-chlorophenoxy)-3-(N-phenyl-N-carbomethoxymethylamino)-2-propanol is a typical compound.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: July 24, 1979
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Shoichi Chokai, Mitsuhiro Machara, Katsuhide Saito, Takayuki Ozaki
  • Patent number: 4123541
    Abstract: 2-Aminomethyl-5-phenyloxazoles and the pharmaceutically acceptacle salts thereof have been found to be effective for meliorating inflammation in warm blooded animals.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: October 31, 1978
    Assignees: Mitsubishi Chemical Industries Limited, Nippon Shinyaku Company, Limited
    Inventors: Sho Inoue, Katsuya Ohata, Satoshi Tsutsui, Tatsuo Nomura
  • Patent number: 4103009
    Abstract: 2,4-Diamino-6-phenyl-s-triazine derivatives which are substituted in the 3-position of the phenyl ring and optionally further substituted in the 6-position demonstrate anti-ulcer and diuretic properties. A representative embodiment is 2,4-diamino-6-(3-trifluoromethylthiophenyl)-s-triazine.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: July 25, 1978
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Yoshiaki Aoyagi, Fusao Ueda, Masahiko Kitano, Shinichi Tada
  • Patent number: 4101660
    Abstract: 2-Aminomethyl-5-phenyloxazoles and the pharmaceutically acceptable salts thereof have been found to be effective for meliorating inflammation in warm blooded animals.
    Type: Grant
    Filed: February 9, 1977
    Date of Patent: July 18, 1978
    Assignees: Mitsubishi Chemical Industries Limited, Nippon Shinyaku Company, Limited
    Inventors: Sho Inoue, Katsuya Ohata, Satoshi Tsutsui, Tatsuo Nomura
  • Patent number: 4098892
    Abstract: The mono-, bis- and trisnicotinoyl derivatives of melamine and the corresponding mono- and bisnicotinoyl derivatives of benzoguanamine demonstrate anti-ulcer and diuretic activity. A representative embodiment is 2-nicotinamido-4,6-diamino-s-triazine.
    Type: Grant
    Filed: February 18, 1977
    Date of Patent: July 4, 1978
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Kenji Sempuku, Yoshiaki Aoyagi, Fusao Ueda
  • Patent number: 4094991
    Abstract: New carboxylic acid derivatives are proposed for use as agents in the treatment of prevention of arteriosclerosis. 1-(p-chlorophenoxy)-3-(N-phenyl-N-carbomethoxymethylamino)-2-propanol is a typical compound.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: June 13, 1978
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Shoichi Chokai, Mitsuhiro Machara, Katsuhide Saito, Takayuki Ozaki
  • Patent number: 4065562
    Abstract: 2-Hydroxymethyl-3,4,5-trihydroxypiperidine possesses antidiabetic and lipid biosynthesis inhibitory properties. The use of the compound for such indications and pharmaceutical compositions adapted to this use are described.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: December 27, 1977
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Katsuya Ohata, Hiroshi Enomoto, Yoshiaki Yoshikuni, Tatsuhiko Kono, Masahiro Yagi
  • Patent number: 4064252
    Abstract: New carboxylic acid derivatives are proposed for use as agents in the treatment or prevention of arteriosclerosis. 1-(p-chlorophenoxy)-3-(N-phenyl-N-carbomethoxymethylamino)-2-propanol is a typical compound.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: December 20, 1977
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Shoichi Chokai, Mitsuhiro Maehara, Katsuhide Saito, Takayuki Ozaki
  • Patent number: 4024280
    Abstract: Process for the preparation of abietanilides which comprises reacting abietic acid, dihydroabietic acid, tetrahydroabietic acid or a reactive derivative thereof with aniline and the products thereby produced, compositions containing the same for reducing blood serum cholesterol and method of use of such compositions.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: May 17, 1977
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Kenji Sempuku, Koji Kitaguchi, Yukio Fujita, Yoshiaki Yoshikuni, Kohei Kura, Katsuhide Saito, Tamiki Mori, Yasuo Yasutomi
  • Patent number: 4009206
    Abstract: Substituted N-phenyl and N-benzyl abietamide derivatives, including the dehydro-, dihydro-, and tetrahydroabietamide derivatives, are cholesterol lowering agents. The abietamide derivatives, of which N-(2,6-dimethylphenyl)-.DELTA..sup.8 -dihydroabietamide is a typical example, are produced by the reaction of abietic acid, dehydroabietic acid, dihydroabietic acid, tetrahydroabietic acid and/or active derivatives thereof with a substituted aniline or benzylamine.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: February 22, 1977
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Kenji Sempuku, Koji Kitaguchi, Yukio Fujita, Yoshiaki Yoshikuni, Kohei Kura, Katsahide Saito, Tamiki Mori, Yasuo Yasutomi
  • Patent number: 3966728
    Abstract: A series of novel benzoguanamine derivatives possessing a high anti-peptic ulcer activity with low toxicity has been prepared by the reaction of the corresponding dihalogenobenzonitriles with dicyandiamide or by the reaction of the corresponding carboxylic acids or functional derivatives thereof with biguanide.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: June 29, 1976
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Yoshiaki Aoyagi, Fusao Ueda, Masahiko Kitano, Satoshi Takata, Shinichi Tada
  • Patent number: RE30886
    Abstract: 2-Hydroxymethyl-3,4,5-trihydroxypiperidine possesses antidiabetic and lipid biosynthesis inhibitory properties. The use of the compound for such indications and pharmaceutical compositions adapted to this use are described.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: March 23, 1982
    Assignee: Nippon Shinyaku Company Ltd.
    Inventors: Katsuya Ohata, Hiroshi Enomoto, Yoshiaki Yoshikuni, Tatsuhiko Kono, Masahiro Yagi