Patents Assigned to Yoshitomi Pharmaceutical Industries, Ltd.
  • Patent number: 5661100
    Abstract: A thermal recording sheet wherein a compound of Formula (I) or (II) is contained in a thermal color developing layer including a basic colorless dye and an organic color developer as main ingredients: ##STR1## (wherein A denotes hydrogen atom, an alkyl group of C.sub.1 to C.sub.4, an alkoxy group of C.sub.1 to C.sub.4, hydroxy group, or nitro group. R.sub.1, R.sub.2, and R.sub.3 are hydrogen atom, an alkyl group of C.sub.1 to C.sub.4, an alkoxy group of C.sub.1 to C.sub.4, hydroxy group, or nitro group. R.sub.1 and R.sub.2 may combine with each other to form an aromatic ring. Y is sulfur or oxygen atom.), ##STR2## (wherein B denotes hydrogen atom, an alkyl group of C.sub.1 to C.sub.4, an alkoxy group of C.sub.1 to C.sub.4, hydroxy group, or nitro group. R.sub.1, R.sub.2, and R.sub.3 are hydrogen atom, an alkyl group of C.sub.1 to C.sub.4, an alkoxy group of C.sub.1 to C.sub.4, hydroxy group, or nitro group. R.sub.1 and R.sub.2 may combine with each other to form an aromatic ring. Y is sulfur or oxygen atom.).
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: August 26, 1997
    Assignees: Nippon Paper Industries Co., Ltd., Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Toshiaki Minami, Tomoaki Nagai, Kaoru Hamada, Akio Sekine, Ryoichi Kinishi, Ryuzo Minakami
  • Patent number: 5656299
    Abstract: A sustained release microsphere preparation which is produced by including a hydrophobic antipsychotic drug such as bromperidol, haloperidol or the like into a base composed of a high molecular weight polymer having in vivo histocompatibility such as polylactic acid, poly(lactic-co-glycolic)acid or the like, and a process for the production thereof.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: August 12, 1997
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Shigemi Kino, Tomonori Osajima, Hiroaki Mizuta
  • Patent number: 5637322
    Abstract: In producing a composition for solid medicine, comprising, as an active ingredient, a potassium channel activator and a pharmaceutically acceptable water-insoluble cellulose polymer, a method for producing a composition for solid medicine, which is characterized by dissolving a potassium channel activator in a solvent to give a medical solution, adding said medical solution to a water-insoluble cellulose polymer inert to said solvent in an amount necessary and sufficient to achieve a predetermined elution rate, homogeneously mixing them and drying the mixture to remove the solvent, and a composition for solid medicine, which is obtainable by said production method. According to the method of the present invention, elution rate of the active ingredient of a preparation comprising a potassium channel activator, which is a sustained release preparation, can be controlled with ease and with good reproducibility.
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: June 10, 1997
    Assignees: Japan Tobacco Inc., Yoshitomi Pharmaceutical Industries Ltd.
    Inventors: Kiyoshi Tamura, Ken-ichi Sugimori, Kenji Ogawa
  • Patent number: 5616581
    Abstract: A pyridine compound of the formula ##STR1## wherein R.sup.1 is a hydrogen, a halogen, an alkyl, an alkoxy or the like, R.sup.2 and R.sup.3 are each a hydrogen, a halogen or an alkyl, --P.dbd.Q-- is --CH.dbd.CH--, --N.dbd.CH-- or --CH.dbd.N--, A is an oxygen atom, a sulfur atom or N(R.sup.4) wherein R.sup.4 is hydrogen, alkyl or the like, n is 0, 1 or 2, B is S(O)p wherein p is 0, 1 or 2, D is a single bond, an alkylene or the like and E is an alkoxyalkyl or --N(R.sup.6)(R.sup.7), and a pharmaceutically acceptable salt thereof have antibacterial activity against Helicobacter pylori, antiulcer activity, gastrointestinal cytoprotective activity, ulcer recurrence, relapse-preventive activity and gastric acid secretion-suppressive activity and are useful as pharmaceutical preparations.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: April 1, 1997
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Takeshi Kawakita, Mitsuharu Sano, Yuko Yutoku, Yoshifumi Ikeda, Keiichiro Haga
  • Patent number: 5604229
    Abstract: 2-Amino-1,3-propanediol compounds of the formula (I) ##STR1## wherein R is an optionally substituted straight- or branched carbon chain, an optionally substituted aryl, an optionally substituted cycloalkyl or the like, and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and each is a hydrogen, an alkyl, an aralkyl, an acyl or an alkoxycarbonyl, pharmaceutically acceptable salts thereof and immunosuppressants comprising these compounds as active ingredients.The 2-amino-1,3-propanediol compounds of the present invention show immunosuppressive action and are useful for suppressing rejection in organ or bone marrow tranplantation, prevention and treatment of autoimmune diseases or as reagents for use in medicinal and pharmaceutical fields.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: February 18, 1997
    Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Taito Co., Ltd.
    Inventors: Tetsuro Fujita, Shigeo Sasaki, Masahiko Yoneta, Tadashi Mishina, Kunitomo Adachi, Kenji Chiba
  • Patent number: 5597918
    Abstract: A fused pyridazine compound of the formula ##STR1## wherein each symbol is as defined in the description. The compounds of the present invention are useful as anxiolytic agents which selectively act on anxiety because of having less side effects (e.g. muscle-relaxation, sedation or interaction with alcohol/barbiturates).
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: January 28, 1997
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tohru Nakao, Hiroshi Tanaka, Yasuto Morimoto, Shuzo Takehara
  • Patent number: 5593988
    Abstract: A therapeutic agent for osteoporosis, comprising an azepine compound of the formula ##STR1## wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof as an active ingredient, a method for treating osteoporosis comprising administering said compound and a use of said compound for the production of a therapeutic agent for osteoporosis. The compounds of the formula (I) have superior bone resorption-inhibitory activity and act to reduce the increased amount of calcium in blood serum, which is caused by bone resorption.
    Type: Grant
    Filed: August 2, 1994
    Date of Patent: January 14, 1997
    Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Japan Tobacco, Inc.
    Inventors: Tetsuya Tahara, Minoru Moriwaki, Kenji Chiba, Shunichi Manabe, Masanori Shindo, Takashi Nakagawa, Takeshi Nakamura
  • Patent number: 5593694
    Abstract: A sustained release tablet comprising a base tablet comprising a water-swellable gelling agent and a pharmaceutically active ingredient dispersed homogeneously in said gelling agent, said base tablet being coated with a film coating composition prepared by dissolving one or two members selected from the group consisting of ethylcellulose and acetylcellulose in an organic solvent. The tablet is capable of zero order dissolution of both water-soluble drugs and slightly water-soluble drugs, and can be produced economically with ease.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: January 14, 1997
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tomohiro Hayashida, Kadoya Kikumaru, Omura Tomoyuki
  • Patent number: 5532240
    Abstract: A condensed thiophene compound represented by general formula: ##STR1## or a pharmaceutically acceptable salt thereof, wherein ring S represents a thiophene ring; R.sup.1 represents hydrogen, halogen, alkyl, etc.; R.sup.2 represents hydrogen, alkyl, acyl, etc.; G represents --CH.sub.2 --, --CH(OH)--, --CO--, etc.; Q represents alkylene; T represents --N(Rb)(Rc) (wherein Rb, Rc represents each alkyl etc.; or alternatively Rb and Rc are combined together to form cyclic amino); D represents --CH.sub.2 -- or --S--; A and B represent each carbonyl or thiocarbonyl, or are null; and m and n represent each 0, 1 to 4, provided that m+n represents an integer of 4 or less.This compound is useful as an antipsychotic drug having a reduced extrapyramidal side effect.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: July 2, 1996
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tohru Nakao, Yuji Ono, Masahiro Bougauchi, Yasuto Morimoto
  • Patent number: 5506256
    Abstract: Novel proline derivatives of the following formula (I) ##STR1## wherein each symbol is as defined in the specification, which specifically inhibit prolyl endopeptidase activity and can be used for the prevention and/or treatment of dementia and amnesia as agents which act directly on the central symptoms of dementia.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: April 9, 1996
    Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Japan Tobacco Inc.
    Inventors: Koji Kobayashi, Kazuhiko Nishii, Kunio Iwata, Itsuo Uchida
  • Patent number: 5504082
    Abstract: A pyridine compound of the formula ##STR1## wherein R.sup.1 is a hydrogen, a halogen, an alkyl, an alkoxy or the like, R.sup.2 and R.sup.3 are each a hydrogen, a halogen or an alkyl, --P.dbd.Q-- is --CH.dbd.CH--, --N.dbd.CH-- or --CH.dbd.N--, A is an oxygen atom, a sulfur atom or N(R.sup.4) wherein R.sup.4 is hydrogen, alkyl or the like, n is 0, 1 or 2, B is S(O)p wherein p is 0, 1 or 2, D is a single bond, an alkylene or the like and E is an alkoxyalkyl or --N(R.sup.6)(R.sup.7), and a pharmaceutically acceptable salt thereof have antibacterial activity against Helicobater pylori, antiulcer activity, gastrointestinal cytoprotective activity, ulcer recurrence, relapse-preventive activity and gastric acid secretion-suppressive activity and are useful as pharmaceutical preparations.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: April 2, 1996
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Takeshi Kawakita, Mitsuharu Sano, Yuko Yutoku, Yoshifumi Ikeda, Keiichiro Haga
  • Patent number: 5478838
    Abstract: 4-Amino(alkyl)cyclohexane-1-carboxamide compounds of the formula (I) ##STR1## wherein each symbol is as defined in the Specification, isomers thereof and pharmaceutically acceptable acid addition salts thereof.The 4-amino(alkyl)cyclohexane-1-carboxamide compounds, isomers thereof and pharmaceutically acceptable acid addition salts thereof of the present invention have potent and long-lasting coronary, cerebral, renal and peripheral blood flow increasing actions and are less toxic, and thus are useful as a potent and long-lasting antihypertensive agent and an agent for the prevention and treatment of diseases in the circulatory organs such as coronary, cerebral, renal and peripheral arteries.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: December 26, 1995
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Masafumi Arita, Tadamasa Saito, Hirofumi Okuda, Hiroyuki Sato, Masayoshi Uehata
  • Patent number: 5466691
    Abstract: Thiophene compounds of the formula ##STR1## wherein each symbol is as defined in the specification, their pharmaceutically acceptable salts, pharmaceutical compositions containing said compound and additives for pharmaceuticals, and antipsychotics containing said compound as an active ingredient.The compound of the present invention has pharmacological actions required of antipsychotic, such as motility suppressing action, anti-apomorphine action, mothamphetamine antagonistic action, tetrabenazine-induced blepharoptosis enhancing action, and the like. The compound of the present invention is useful as an antipsychotic having less extrapyramidal side-effects or a non-benzodiazepine type antianxiety agent.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: November 14, 1995
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tohru Nakao, Yuji Ono, Hiroshi Tanaka, Minoru Obata, Yasuto Morimoto
  • Patent number: 5439905
    Abstract: Thienodiazepine compounds of the formula ##STR1## wherein each symbol is as defined in the specification, their pharmaceutically acceptable salts, and pharmaceutical compositions containing said compound.Since the compounds possess excellent antagonistic actions on cholecystokinin and gastrin, and exhibit potent and durable suppressive actions on pancreatic enzyme secretion and gastric acid secretion, they are useful as medicaments acting on the central nervous system and the peripheral nervous system, as well as prophylactic and therapeutic medicines for pancreatic disorders and gastrointestinal ulcers. Furthermore, they are expected to exhibit anti-dementia actions based on their antagonistic actions on cholecystokinin, and are useful as an anti-dementia.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: August 8, 1995
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Yoichi Naka, Keiichiro Haga, Masahiro Hosoya
  • Patent number: 5420164
    Abstract: A cycloalkylurea compound of the formula (I): ##STR1## wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, which compound inhibits ACAT and is useful as hypolipidemic and antiatherosclerotic medicine.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: May 30, 1995
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tadashi Mishina, Kanou Harada, Joji Yasuoka, Hidenobu Kushuhara, Noriyoshi Izumi
  • Patent number: 5412089
    Abstract: Novel stable, non-hygroscopic 2'-deoxy-2'-methylidenecytidine dihydrate and its methods for production, and compositions with improved solubility containing same and saccharide(s).
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: May 2, 1995
    Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Yamasa Corporation
    Inventors: Shinji Sakata, Takanori Miyashita, Kazuhiko Kondo
  • Patent number: 5411990
    Abstract: An industrial microbicide which comprises at least one haloglyoxime derivative of the formula (I): ##STR1## wherein X is a halogen atom; Y is a hydrogen atom, a halogen atom or a lower alkyl group having 1 to 4 carbon atoms; and Z is a hydrogen atom or an optionally halogenated lower alkanoyl group having 1 to 5 carbon atoms; and a known industrial microbicidal ingredient selected from the group consisting of an organonitrogen-sulfur compound, an organohalogen compound, an organonitrogen compound and an organosulfur compound; and optionally a carrier or diluent.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: May 2, 1995
    Assignees: Yoshitomi Pharmaceutical Industries Ltd., Katayama Chemical Inc.
    Inventors: Katsuji Tsuji, Hidenori Hirashima
  • Patent number: 5329016
    Abstract: Thiophene compounds of the formula: ##STR1## wherein R.sup.1 is hydrogen, nitro, amino, halogen or C.sub.1-4 alkyl; R.sup.2 is hydrogen, nitro, amino, halogen, C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, acyl, C.sub.2-5 alkoxycarbonyl, C.sub.1-4 alkoxy-C.sub.1-4 alkyl, aryloxy-C.sub.1-4 alkyl, acyloxy-C.sub.1-4 alkyl, hydroxy-C.sub.1-4 alkyl, acyloxy-C.sub.2-5 alkanoyl, C.sub.1-4 alkoxy-C.sub.2-5 alkanoyl, hydroxy-C.sub.2-5 alkanoyl, aryloxy-C.sub.2-5 alkanoyl or C.sub.2-5 haloalkanoyl; R.sup.3 is hydrogen, C.sub.1-8 alkyl, hydroxy-C.sub.1-4 alkyl, C.sub.2-5 alkanoyloxy-C.sub.1-4 alkyl, aryl, aryl-C.sub.1-4 alkyl, heteroaryl, heteroaryl-C.sub.1-4 alkyl or aryl, aryl-C.sub.1-4 alkyl, heteroaryl or heteroaryl-C.sub.1-4 alkyl substituted by at least one substituent selected from the group consisting of halogen, hydroxy, amino, nitro, cyano, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.2-5 alkanoylamino, C.sub.1-4 haloalkyl, acyloxy, C.sub.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: July 12, 1994
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tohru Nakao, Yasuto Morimoto, Shuzo Takehara, Hiroshi Tanaka
  • Patent number: 5318969
    Abstract: A benzopyran compound of the general formula (I) ##STR1## wherein A represents --OR.sup.1 or --NH--COR.sup.2 ; R.sup.3 represents hydrogen, a lower alkyl, a lower alkoxy, amino, a mono- or di-lower alkylamino, an amino-lower alkyl, a hydroxy-lower alkyl, a halo-lower alkyl, a lower alkoxy-lower alkyl, an acyloxy-lower alkyl, a lower alkoxycarbonyl-lower alkyl, an aryl or a heteroaryl, or R.sup.2 and R.sup.3 combinedly together form an alkylene having 1 to 2 carbon atoms; R.sup.4 and R.sup.5 are the same or different, and respectively represent hydrogen or a lower alkyl, or combinedly together form an alkylene having 2 to 5 carbon atoms; R.sup.6 represents hydroxyl group, formyloxy, an alkanoyloxy, a haloalkanoyloxy, a lower alkoxycarbonyloxy, an aroyloxy, a heteroaroyloxy, carbamoyloxy, a mono- or di-lower alkylcarbamoyloxy and R.sup.7 represents hydrogen, or R.sup.6 and R.sup.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: June 7, 1994
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tsutomu Yamanaka, Toshio Seki, Tohru Nakajima, Osamu Yaoka
  • Patent number: 5300257
    Abstract: Tetrakis(2,4-di-tert-butyl-5-methylphenyl)-4,4'-biphenylenediphosphonite, stabilizers for organic materials, which contain said compound, and stabilized organic materials containing said compound as a stabilizer. The tetrakis(2,4-di-tert-butyl-5-methylphenyl)-4,4'-biphenylenediphosphonite has particularly superior hydrolysis resistance, and is characterized in that it has superior storage stability due to its scarce hygroscopicity. It can be purified and handled easily since it is in a powder form, and it shows less volatility at high temperatures. By using the compound of the present invention as a stabilizer for organic materials, extremely useful organic materials imparted with superior processing stability, heat resistance and resistance to oxidative degradation can be provided.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: April 5, 1994
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Hiroyuki Akashi, Takeshi Inoue, Tetsuji Ike, Hidaka Yasuhiro, Shoichi Horie