Patents by Inventor Sachiyuki Hamano

Sachiyuki Hamano 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: 5663414
    Abstract: A novel benzenesulfonamide derivative represented by the formula: ##STR1## has an inhibitory activity against phospholipase A.sub.2, so that it is effective in the treatment of diseases for which such an activity is efficacious.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: September 2, 1997
    Assignee: Eisai Co., Ltd.
    Inventors: Hitoshi Oinuma, Takashi Hasegawa, Tadanobu Takamura, Kenichi Nomoto, Yoshiharu Daiku, Toshihiko Naito, Sachiyuki Hamano
  • Patent number: 5530118
    Abstract: A novel benzenesulfonamide derivative represented by the formula: ##STR1## has an inhibitory activity against phospholipase A.sub.2, so that it is effective in the treatment of diseases for which such an activity is efficacious.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: June 25, 1996
    Assignee: Eisai Co., Ltd.
    Inventors: Hitoshi Oinuma, Takashi Hasegawa, Tadanobu Takamura, Kenichi Nomoto, Yoshiharu Daiku, Toshihiko Naito, Sachiyuki Hamano
  • Patent number: 5506238
    Abstract: The biphenylmethane derivative having the formula (I) is useful to prevent and treat hypertension and cardiac failure. ##STR1## in which R1 is hydrogen, an alkyl, a cycloalkyl, a halogenated alkyl, --S--R7, --SO2--R7, --C.tbd.C--R7 or --(CH2)p--OR7, R7 being hydrogen, an alkyl, a cycloalkyl or a halogenated alkyl, p being zero or 1, --A1=A2--A3=A4-- is --CH=CH--CH=CH--, --N=CH--CH=CH--, --CH=N--CH=CH--, --CH=CH--N=CH--, --CH=CH--CH=N-- or --CH=N--CH=N--, R2 and R3 are each hydrogen, a halogen, a lower alkyl, a lower alkoxy, a carbamoyl or cyano, R4 is hydrogen or a lower alkyl, R5 is 1H-tetrazol-5-yl, carboxyl (--COOH) or a carboxylic ester and R6 is hydrogen, a halogen, hydroxyl or a lower alkoxy, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: April 9, 1996
    Assignee: Eisai Co., Ltd.
    Inventors: Kazutoshi Miyake, Masayuki Matsukura, Naoki Yoneda, Osamu Hiroshima, Nobuyuki Mori, Hiroki Ishihara, Takashi Musha, Toshiyuki Matsuoka, Sachiyuki Hamano, Norio Minami
  • Patent number: 5328911
    Abstract: The biphenylmethane derivative having the formula (I) is useful to prevent and treat hypertension and cardiac failure. ##STR1## in which R1 is hydrogen, an alkyl, a cycloalkyl, a halogenated alkyl, --S--R7, --SO2--R7, --C.tbd.C--R7 or --(CH2)p--OR7, R7 being hydrogen, an alkyl, a cycloalkyl or a halogenated alkyl, p being zero or 1, --A1.dbd.A2--A3.dbd.A4-- is --CH.dbd.CH--CH.dbd.CH--, --N.dbd.CH--CH.dbd.CH--, --CH.dbd.N--CH.dbd.CH--, --CH.dbd.CH--N.dbd.CH--, --CH.dbd.CH--CH.dbd.N-- or --CH.dbd.N--CH.dbd.N--, R2 and R3 are each hydrogen, a halogen, a lower alkyl, a lower alkoxy, a carbamoyl or cyano, R4 is hydrogen or a lower alkyl, R5 is 1H-tetrazol-5-yl, carboxyl (--COOH) or a carboxylic ester and R6 is hydrogen, a halogen, hydroxyl or a lower alkoxy, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: September 13, 1990
    Date of Patent: July 12, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Kazutoshi Miyake, Masayuki Matsukura, Naoki Yoneda, Osamu Hiroshima, Nobuyuki Mori, Hiroki Ishihara, Takashi Musha, Toshiyuki Matsuoka, Sachiyuki Hamano, Norio Minami
  • Patent number: 5298518
    Abstract: The biphenylmethane derivative having the formula (I) is useful to prevent and treat hypertension and cardiac failure. ##STR1## in which R1 is hydrogen, an alkyl, a cycloalkyl, a halogenated alkyl, --S--R7, --SO2--R7, --C.tbd.C--R7 or --(CH2)--OR7, R7 being hydrogen, an alkyl, a cycloalkyl or a halogenated alkyl, p being zero or 1, --A1.dbd.A2--A3.dbd.A4-- is CH.dbd.CH--CH.dbd.CH--, --N.dbd.CH--CH.dbd.CH--, --CH.dbd.N--CH.dbd.CH--, --CH.dbd.CH--N.dbd.CH--, --CH.dbd.CH--CH.dbd.N-- or --CH.dbd.N--CH.dbd.N--, R2 and R3 are each hydrogen, a halogen, a lower alkyl, a lower alkoxy, a carbamoyl or cyano, R4 is hydrogen or a lower alkyl, R5 is 1H-tetrazol-5-yl, carboxyl (--COOH) or a carboxylic ester and R6 is hydrogen, a halogen, hydroxyl or a lower alkoxy, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: March 29, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Kazutoshi Miyake, Masayuki Matsukura, Naoki Yoneda, Osamu Hiroshima, Nobuyuki Mori, Hiroki Ishihara, Takashi Musha, Toshiyuki Matsuoka, Sachiyuki Hamano, Norio Minami
  • Patent number: 5292521
    Abstract: An oral solid preparation comprising an organic acid or its salt and a catechol compound. The catechol compound is, for example, a pyrrolidine derivative having a catechol group of the following general formula (I). It exhibits an improved absorbability in vivo.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: March 8, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Mitsumasa Shino, Sachiyuki Hamano
  • Patent number: 5281626
    Abstract: A novel benzenesulfonamide derivative represented by the formula: ##STR1## has an inhibitory activity against phospholipase A.sub.2, so that it is effective in the treatment of diseases for which such an activity is efficacious.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: January 25, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Hitoshi Oinuma, Takashi Hasegawa, Tadanobu Takamura, Kenichi Nomoto, Yoshiharu Daiku, Toshihiko Naito, Sachiyuki Hamano
  • Patent number: 4599414
    Abstract: Derivatives of theophylline substituted at the 7 position with various substituents containing a homopiperazine nucleus. The compounds can be prepared reacting theophylline or reactive intermediate containing same with a homopiperazine compound. The compounds exhibit antihistaminic activity and vasodilating activity.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: July 8, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Sachiyuki Hamano, Tadao Shoji
  • Patent number: 4493837
    Abstract: There are disclosed theobromine derivatives wherein theobromine is substituted at the 1 position with substituted piperazino, homopiperazino and piperidino groups, and pharmacologically acceptable acid addition salts thereof. The compounds exhibit vasodilating and psychotropic and analgesic activities.
    Type: Grant
    Filed: October 20, 1982
    Date of Patent: January 15, 1985
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Sachiyuki Hamano, Tadao Shoji, Takeru Kaneko, Takeshi Uzuo
  • Patent number: 4421763
    Abstract: Derivatives of 2-substituted-cyclohexane-1,3-diones possessing antihypertensive activity.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: December 20, 1983
    Assignee: Eisai Co., Ltd.
    Inventors: Sachiyuki Hamano, Shinichi Kitamura, Toshiji Igarashi, Yoshikage Nakajima
  • Patent number: 4350705
    Abstract: Derivatives of 2-substituted-cyclohexane-1,3-diones possessing antihypertensive activity.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: September 21, 1982
    Assignee: Eisai Co., Ltd.
    Inventors: Sachiyuki Hamano, Shinichi Kitamura, Toshiji Igarashi, Yoshikage Nakajima
  • Patent number: 4180577
    Abstract: New furo[2, 3d]pyrimidine derivatives of the general formula: ##STR1## wherein R.sub.1 represents a lower alkyl, a lower alkenyl or an aralkyl group, and R.sub.2 represents a lower alkyl, unsubstituted phenyl, carboxyl, methylsulphonyl, methoxycarbonyl or a nitro-substituted phenyl group, or the corresponding pharmacologically acceptable acid addition salts. The new compounds exhibit the outstanding anti-ulcer, anti-inflammatory and anti-edema effects.
    Type: Grant
    Filed: May 2, 1978
    Date of Patent: December 25, 1979
    Assignee: Eisai Co., Ltd.
    Inventors: Sachiyuki Hamano, Takaharu Nakamura
  • Patent number: 4064169
    Abstract: Bis-(meta-amidinophenoxy)-compounds and pharmacologically acceptable acid addition salts thereof, having excellent antifungal, antibacterial and anti-trichomonal activities.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: December 20, 1977
    Assignee: Eisai Co., Ltd.
    Inventors: Sachiyuki Hamano, Tamotsu Kanazawa, Shin-ichi Kitamura
  • Patent number: 4038278
    Abstract: New 4-aminopyrimidium derivatives of the general formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom or a lower alkyl group, and R.sub.3 and R.sub.4 each represents a hydrogen or halogen atom, a lower alkyl, a lower alkoxyl, a lower alkoxycarbonyl, a lower alkylsulfonyl, nitro or amino group, and X represents a halogen atom, as well as a process for the preparation thereof. The compounds are useful as anti-inflammatory, analgesic agents without producing gastrointestinal trouble.
    Type: Grant
    Filed: August 8, 1975
    Date of Patent: July 26, 1977
    Assignee: Eisai Co., Ltd.
    Inventors: Sachiyuki Hamano, Takaharu Nakamura
  • Patent number: 4034010
    Abstract: Bis-(meta-amidinophenoxy)-compounds and pharmacologically acceptable acid addition salts thereof, having excellent antifungal, antibacterial and anti-trichomonal activities.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: July 5, 1977
    Assignee: Eisai Co., Ltd.
    Inventors: Sachiyuki Hamano, Tamotsu Kanazawa, Shin-ichi Kitamura