Patents by Inventor Kazuyuki Nakagawa

Kazuyuki Nakagawa 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: 5734428
    Abstract: There is disclosed a superimpose device for a single-lens reflex camera, which has a finder optical system including a focusing screen, a pentagonal roof type prism, and an eyepiece lens, a reflection plate which is arranged near the prospective imaging plane the finder optical system, and has micro-prisms forming a display portion, a plurality of light sources arranged near the vertex of the prism, and a projection optical element for deflecting illumination light from each light source by a reflection surface, and projecting the deflected light toward a front upper portion of the prism. The display portion illuminated with the illumination light via the prism, and light reflected by the display portion is guided to the eyepiece lens.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: March 31, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuo Suda, Jun Terashima, Masayuki Tanaka, Kazuyuki Nakagawa
  • Patent number: 5659821
    Abstract: The present invention relates to a driving apparatus arranged to perform driving control of a travelling member, such as a shutter member, by using a vibration wave motor. According to the present invention, the travelling member is arranged to be driven by the spring force of a spring member. The travelling member is held in a stopped state against the spring force by the stopping torque of the vibration wave motor, and by causing the vibration wave motor to generate a standing wave, the stopping torque is cancelled so that the travelling member starts travelling by the spring force.
    Type: Grant
    Filed: December 26, 1995
    Date of Patent: August 19, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuya Kawakita, Kazuyuki Nakagawa
  • Patent number: 5242919
    Abstract: Novel 2,3-dihydro-1H-indene derivatives and salts thereof represented by the general formula (1), ##STR1## [wherein R.sup.1 and R.sup.2 are each a hydrogen atom, a lower alkyl group, a phenyl group which may have halogen atoms and/or alkyl groups as the substituents on the phenyl ring; R.sup.3 is a halgoen atom or a lower alkyl group; R.sup.4 is a hydrogen atom, a halogen atom, a phenyl-lower alkyl group, a cycloalkyl-lower alkyl group or the like; R.sup.5 is a hydroxyimino group, an alkylamino group or a group of the formula --NHR.sup.8 (wherein R.sup.8 is a hydrogen atom, a halogen-substituted lower alkanoyl group or the like); R.sup.6 is a hydrogen atom or a phenyl group; and R.sup.7 is a hydrogen atom or a lower alkyl group].
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: September 7, 1993
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yasuo Oshiro, Hiraki Ueda, Kazuyuki Nakagawa
  • Patent number: 5200678
    Abstract: A motor driving control apparatus having a function for performing an individual test operation of a servomotor driving control apparatus or an inverter apparatus by generating test operation command in the control apparatus in place of a command from an external controller, whereby both a function check and a performance check can be performed to attain an improvement in reliability and case of operation.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: April 6, 1993
    Assignees: Hitachi, Ltd., Hitachi Keiyo Engineering Co., Ltd.
    Inventors: Mutuo Tokashiki, Kazumasa Sugiyama, Sumio Kobayashi, Hiroshi Sugai, Kazuyuki Nakagawa
  • Patent number: 5137889
    Abstract: Dihydropyridine derivatives and salts thereof represented by the general formula, ##STR1## which possess excellent calcium antagonist effect, hypotensive effect, platelets aggregation inhibitory effect, phosphodiesterase inhibitory effect, calmodulin inhibitory effect and peroxidized lipid lowering effect, and thus dihydropyridine derivatives and salts thereof are useful as a coronary blood flow improving agent such as coronary vasodilator, hypotensive agent, prophylaxis and treating agents for thrombosis, phosphodiesterase inhibitory agent, peroxidized lipid metabolism lowering agent, anti-inflammatory agent and others.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: August 11, 1992
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Shigeharu Tamada, Kazuyoshi Nagami, Shuji Teramoto, Tatsuyoshi Tanaka, Kazuyuki Nakagawa
  • Patent number: 5055474
    Abstract: Novel 2,3-dihydro-1H-indene derivatives and salts thereof represented by the general formula (1), ##STR1## [wherein R.sup.1 and R.sup.2 are each a hydrogen atom, a lower alkyl group, a phenyl group which may have halogen atoms and/or alkyl groups as the substituents on the phenyl ring; R.sup.3 is a halogen atom or a lower alkyl group; R.sup.4 is a hydrogen atom, a halogen atom, a phenyl-lower alkyl group, a cycloalkyl-lower alkyl group or the like; R.sup.5 is a hydroxyimino group, an alkylamino group or a group of the formula --NHR.sup.8 (wherein R.sup.8 is a hydrogen atom, a halogen-substituted lower alkanoyl group or the like); R.sup.6 is a hydrogen atom or a phenyl group; and R.sup.7 is a hydrogen atom or a lower alkyl group].
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: October 8, 1991
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yasuo Oshiro, Hiraki Ueda, Kazuyuki Nakagawa
  • Patent number: 5034395
    Abstract: Dihydropyridine derivatives and salts thereof represented by the general formula, ##STR1## which possess excellent calcium antagonist effect, hypotensive effect, platelets aggregation inhibitory effect, phosphodiesterase inhibitory effect, calmodulin inhibitory effect and peroxidized lipid lowering effect, and thus dihydropyridine derivatives and salts thereof are useful as a coronary blood flow improving agent such as coronary vasodilator, hypotensive agent, prophylaxis and treating agents for thrombosis, phophodiesterase inhibitory agent, peroxidized lipid metabolism lowering agent, anti-inflammatory agent and others.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: July 23, 1991
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Shigeharu Tamada, Kazuyoshi Nagami, Shuji Teramoto, Tatsuyoshi Tanaka, Kazuyuki Nakagawa
  • Patent number: 4895847
    Abstract: Novel 2,3-dihydro-1H-indene derivatives and salts thereof represented by the general formula (1), ##STR1## [wherein R.sup.1 and R.sup.2 are each a hydrogen atom, a lower alkyl group, a phenyl group which may have halogen atoms and/or alkyl groups as the substituents on the phenyl ring; R.sup.3 is a halogen atom or a lower alkyl group; R.sup.4 is a hydrogen atom, a halogen atom, a phenyl-lower alkyl group, a cycloalkyl-lower alkyl group or the like; R.sup.5 is a hydroxyimino group, an alkylamino group or a group of the formula --NHR.sup.8 (wherein R.sup.8 is a hydrogen atom, a halogen-substituted lower alkanoyl group or the like); R.sup.6 is a hydrogen atom or a phenyl group; and R.sup.7 is a hydrogen atom or a lower alkyl group].
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: January 23, 1990
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yasuo Oshiro, Hiraki Ueda, Kazuyuki Nakagawa
  • Patent number: 4880815
    Abstract: Novel tetrahydroquinoline derivatives and salts thereof and novel imidazopyridine derivatives and salts thereof, both having excellent anti-peptic ulcer activities, and are useful as treating agents for peptic ulcers such as gastric ulcer, duodenum ulcer and the like.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: November 14, 1989
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Minoru Uchida, Seiji Morita, Masatoshi Chihiro, Kazuyuki Nakagawa
  • Patent number: 4845100
    Abstract: Carbostyril derivatives and salts thereof having excellent positive inotropic activity, increasing activity of coronary blood flow, as well as hypotensive activity in one hand, and also they do not have substantially increasing activity of heart beat as their characteristic property, as well as they have less side-effects in the central nervous system, such as they have less vomiting effect, decreasing effect in motor function and tremor effect.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: July 4, 1989
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Atsushi Abiko, Takafumi Fujioka, Kazuyuki Nakagawa, Kazumi Kondo
  • Patent number: 4824840
    Abstract: Carbostyril derivatives having antihistaminic action and central nervous controlling action are useful as antihistaminic agents or central nervous controlling agents. The derivatives are represented by the general formula, ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms or a phenylalkyl group, an alkylene group containing 1 to 4 carbon atoms; R.sup.2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a phenyl group; R.sup.3 is a hydrogen atom, a hydroxy group, an alkyl group having 1 to 4 carbon atoms, an alkanoyloxy group having 1 to 4 carbon atoms or a 3,4,5-trimethoxybenzoyloxy group; R.sup.4 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R.sup.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: April 25, 1989
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Kazuo Banno, Takafumi Fujioka, Yasuo Oshiro, Kazuyuki Nakagawa
  • Patent number: 4792628
    Abstract: Indane derivatives and their salts represented by the general formula (1), ##STR1## wherein R.sup.1 is an amino group which may have lower alkyl groups as the substituents, a hydroxylimino group, an alkanoylamino group having 1 to 10 carbon atoms which may have halogen atoms as the substituents, a lower alkylsulfonylamino group, a phenylsulfonylamino group which may have lower alkyl groups as the substituents on the phenyl ring, a benzoylamino group having lower alkyl groups as the substituents on the phenyl ring, and a phenyl-lower alkylamino group having a hydroxyl groups or a lower alkyl groups as the substituents on the phenyl ring, R.sup.2 is a hydrogen atom, a lower alkyl group, a halogen atom, a nitro group, an amino group, an amino-lower alkyl group, a lower alkanoylamino group, a lower alkanoylamino-lower alkyl group which may have halogen atoms as the substituents, a lower alkylthio group, a 1-piperidinesulfonyl group, or a lower alkenyl group; R.sup.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: December 20, 1988
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yasuo Oshiro, Hiraki Ueda, Kazuyuki Nakagawa
  • Patent number: 4788130
    Abstract: Novel 2,3-dihydro-1H-indene derivatives and salts thereof represented by the general formula (1), ##STR1## [wherein R.sup.1 and R.sup.2 are each a hydrogen atom, a lower alkyl group, a phenyl group which may have halogen atoms and/or alkyl groups as the substituents on the phenyl ring; R.sup.3 is a halogen atom or a lower alkyl group; R.sup.4 is a hydrogen atom, a halogen atom, a phenyl-lower alkyl group, a cycloalkyl-lower alkyl group or the like; R.sup.5 is a hydroxyimino group, an alkylamino group or a group of the formula --NHR.sup.8 (wherein R.sup.8 is a hydrogen atom, a halogen-substituted lower alkanoyl group or the like); R.sup.6 is a hydrogen atom or a phenyl group; and R.sup.7 is a hydrogen atom or a lower alkyl group].
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: November 29, 1988
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yasuo Oshiro, Hiraki Ueda, Kazuyuki Nakagawa
  • Patent number: 4766120
    Abstract: Tetrazole derivatives of the formula: ##STR1## wherein R.sup.1 is an optional defined substituent; A is sulfur or a lower alkylene-thio, l is 0 or 1; B is a lower alkylene; R.sup.2 is hydroxy, a lower alkoxy, or a group: ##STR2## wherein R.sup.3 and R.sup.4 are optional defined substituents, or the R.sup.3 or R.sup.4 may combine together with the nitrogen atom to which they are joined to form a defined heterocyclic group, and a pharmaceutically acceptable salt thereof, which have prophylactic or therapeutic activities against peptic and/or duodenal ulcers and also anti-inflammatory activity and are useful as an anti-ulcer or anti-inflammatory drug; processes for the preparation of the tetrazole derivatives; and pharmaceutical compositon containing said tetrazole derivatives.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: August 23, 1988
    Assignee: Otsuka Pharmaceutical Company, Limited
    Inventors: Minoru Uchida, Takao Nishi, Kazuyuki Nakagawa
  • Patent number: 4760064
    Abstract: A carbostyril compound of the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are as defined or its pharmaceutically acceptable salt, composition containing the compound and processes for preparing the same are disclosed.The compound is useful as a cardiotonic agent.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: July 26, 1988
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Michiaki Tominaga, Takafumi Fujioka, Kazuyoshi Nagami, Kazuyuki Nakagawa
  • Patent number: 4755513
    Abstract: Novel 1-substituted phenyl-4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is hydrogen atom or an alkyl having 1 to 2 carbon atoms, R.sup.2 is hydrogen atom or fluorine atom, and R.sup.3 is hydroxy, fluorine atom or an alkanoyloxy having 1 to 6 carbon atoms, and a pharmaceutically acceptable salt thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition comprising as an active ingredient said 1-substituted phenyl-4-oxoquinoline-3-carboxylic acid compounds or a pharmaceutically acceptable salt thereof in admixture with a pharmaceutically acceptable diluent or carrier.
    Type: Grant
    Filed: August 16, 1985
    Date of Patent: July 5, 1988
    Assignee: Otsuka Pharmaceutical Company, Limited
    Inventors: Hitoshi Tone, Hisashi Miyamoto, Hiraki Ueda, Kazuyuki Nakagawa
  • Patent number: 4738970
    Abstract: Novel tetrahydroquinoline derivatives and salts thereof and novel imidazopyridine derivatives and salts thereof, both having excellent anti-peptic ulcer activities, and are useful as treating agents for peptic ulcers such as gastric ulcer, duodenum ulcer and the like.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: April 19, 1988
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Minoru Uchida, Seiji Morita, Masatoshi Chihiro, Kazuyuki Nakagawa
  • Patent number: 4737501
    Abstract: An oxindol compound of the formula (I) ##STR1## wherein A represents a lower alkylene group;R represents a hydrogen atom, a lower alkyl group, a phenyl-lower alkyl group, a phenoxy-lower alkyl group, a benzoyl-lower alkyl group, a lower alkoxycarbonyl group, a lower alkanoyl group, a benzoyl group which may be substituted with 1 to 3 of a lower alkyl group, a lower alkoxy group and a halogen atom on the benzene ring thereof, or a benzoyl group which is substituted with a lower alkylenedioxy group on the benzene ring thereof; andm and n, which may be the same or different, each represents an integer of 0 or 1, with proviso that when n is an integer of 1, then m is an integer of 1,when A is an ethylene group and m is an integer of 1, then R should not be 3,4,5-trimethoxybenzoyl group, and when A is a group of the formula: --C(R.sup.1)(R.sup.2)--(where R.sup.1 and R.sup.
    Type: Grant
    Filed: July 5, 1985
    Date of Patent: April 12, 1988
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Michiaki Tominago, Hidenori Ogawa, Takafumi Fujioka, Kazuyuki Nakagawa
  • Patent number: 4734416
    Abstract: Carbostyril derivatives having antihistamic action and central nervous controlling action are useful as antihistamic agents or central nervous controlling agents. The derivatives are represented by the general formula, ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms or a phenylalkyl group having an alkylene group containing 1 to 4 carbon atoms; R.sup.2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a phenyl group; R.sup.3 is a hydrogen atom, a hydroxy group, an alkyl group having 1 to 4 carbon atoms, an alkanolyoxy group having 1 to 4 carbon atoms or a 3,4,5-trimethoxybenzoyloxy group; R.sup.4 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R.sup.
    Type: Grant
    Filed: March 28, 1979
    Date of Patent: March 29, 1988
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Kazuo Banno, Takafuni Fujioka, Yasuo Oshiro, Kazuyuki Nakagawa
  • Patent number: RE34722
    Abstract: Disclosed are carbostyril derivatives and their salts of the formulas ##STR1## The compounds have anti-peptic ulcer effects, and are useful as a treating agent for curing peptic ulcers in the digestive system, such as ulcers in the stomach and in the duodenum. The compounds particularly have prophylaxis and curing effects for treating chronic ulcers, for example experimental acetic acid-induced ulcers and cautery ulcers, with both low toxicity and few side-effects. Also disclosed are processes for preparing the compounds and for preparing pharmaceutical compositions containing them.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: September 6, 1994
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Minoru Uchida, Makoto Komastu, Kazuyuki Nakagawa