Patents by Inventor Ryuji Tsuzuki
Ryuji Tsuzuki 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).
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Publication number: 20250019937Abstract: An assistance device includes circuitry configured to acquire data relating to a shape of a work target around a work machine; and propose, to a user, a movement from among a plurality of candidate movements in a predetermined work of the work machine, based on the acquired data, the plurality of candidate movements being of different types from each other.Type: ApplicationFiled: September 27, 2024Publication date: January 16, 2025Inventors: Ryuji TSUZUKI, Hiroki ADACHI, Kosuke HARA
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Publication number: 20250003197Abstract: A supporting device includes a memory, and a processor that is connected to the memory and configured to execute obtaining data related to a shape of a part that has already been constructed in a constructing target, and estimating a target shape of the constructing target based on the data obtained.Type: ApplicationFiled: September 9, 2024Publication date: January 2, 2025Inventors: Ryuji TSUZUKI, Kosuke HARA
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Patent number: 6083955Abstract: Novel arylethenesulfonamide derivative having a high affinity for drugs, especially endoserine receptors, and represented by general formula (I); pharmaceutically acceptable salts thereof; and drugs comprising the same as the active ingredient, especially endoserine receptor antagonist, whereinAr: optionally substituted aryl group or optionally substituted five- to six-membered heteroaryl group;X: oxygen atom, sulfur atom or a group represented by a formula --NH--;Y: oxygen atom or sulfur atom;R.sub.1 : hydrogen atom, optionally halogen-substituted lower alkyl group, cycloalkyl group, optionally substituted aryl group or optionally substituted five- to six-membered heteroaryl group.R.sub.2 : lower alkyl group, lower alkenyl group or lower alkynyl group where each of which may be substituted with one to three substituent(s) selected from a group consisting of hydroxyl group, lower alkoxy group, cycloalkyl group, halogen atom, carboxyl group and lower alkoxycarbonyl group;R.sub.Type: GrantFiled: June 19, 1998Date of Patent: July 4, 2000Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Hironori Harada, Jun-ichi Kazami, Susumu Watanuki, Ryuji Tsuzuki, Katsumi Sudou, Akihiro Tanaka
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Patent number: 5623074Abstract: A compound of the formula (I) or its salt and a process for producing the compounds; The compounds have the effect to dilate neophrovascular tracts; ##STR1## Wherein ##STR2## represents the formula ##STR3## (wherein R.sup.4 is a hydrogen atom or lower alkylsulfonyl); R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino;R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkylsulfonylamino;R.sup.3 is hydrogen, lower alkyl, or hydroxyl;R is hydrogen or halogen;with the proviso that when R.sup.1 is hydroxyl, there is no case that all of R.sup.2, R.sup.3 and R are hydrogens, and further with the proviso that when R is hydrogen, A excludes ##STR4## or a salt thereof.Type: GrantFiled: June 30, 1994Date of Patent: April 22, 1997Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Akihiro Tanaka, Takashi Fujikura, Ryuji Tsuzuki, Masaki Yokota, Takeyuki Yatsu
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Patent number: 5420126Abstract: Novel benzoxazine derivatives of the formula (I): ##STR1## are provided as well as their pharmaceutically acceptable salts and a method for their use as potassium channel activating agents 2-(3,4-Dihydro-2, 2-dimethyl-6-phenylsulfonyl-2H-1,4-benzoxazin-4-yl)pyridine N-oxide is illustrative of a benzoxazine derivative of formula (I).Type: GrantFiled: November 24, 1992Date of Patent: May 30, 1995Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Yuzo Matsumoto, Ryuji Tsuzuki, Akira Matsuhisa, Kazuhisa Takayama, Wataru Uchida, Masaharu Asano, Isao Yanagisawa, Toru Yoden
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Patent number: 5378849Abstract: This invention provides certain novel substituted tetrahydroisoquinoline opticulisomers of the formula: ##STR1## wherein A represents the formula ##STR2## wherein R is hydrogen or halogen; R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino;R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkylsulfonylamino;R.sup.3 is hydrogen, lower alkyl, or hydroxyl;R.sup.4 is a hydrogen atom or a lower alkylsulfonyl;with the proviso that when R.sup.1 is hydroxyl, R.sup.2 and R.sup.3 are all not hydrogen, or salts thereof.Type: GrantFiled: November 24, 1992Date of Patent: January 3, 1995Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Akihiro Tanaka, Takashi Fujikura, Ryuji Tsuzuki, Masaki Yokota, Takeyuki Yatsu
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Patent number: 5278158Abstract: Oxazinobenzazole derivatives represented by the formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each independently represents a hydrogen atom or a lower alkyl group; R.sup.5 and R.sup.6 jointly form, in conjunction with the two adjacent carbon atoms, a substituted or unsubstituted 5- or 6-membered heterocyclic ring having at least two nitrogen atoms and optionally having one or more heteroatom(s) selected from the group consisting of an oxygen atom, a sulphur atom and a nitrogen atom; and m is an integer of 0 or 1, and pharmaceutically acceptable salts thereof. The compounds of the present invention are useful as antispasmodic medicaments.Type: GrantFiled: February 14, 1992Date of Patent: January 11, 1994Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Ryuji Tsuzuki, Yuzo Matsumoto, Akira Matsuhisa, Toru Yoden, Wataru Uchida, Isao Yanagisawa
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Patent number: 5204468Abstract: This invention provides the single species (-)-(S)-4-(3,4-dihydroxyphenyl)-7, 8-dihydroxy-1,2,3,4-tetrahydroisoquinoline hydrochloride hydrate, which is useful as a nephrovascular dilator.Type: GrantFiled: July 25, 1991Date of Patent: April 20, 1993Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Akihiro Tanaka, Takashi Fujikura, Ryuji Tsuzuki, Masaki Yokota, Takeyuki Yatsu
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Patent number: 5180730Abstract: This invention relates to novel heterocyclic compounds structurally characterized by containing a specific heterocyclic group and by the presence of --CH.sub.2 --S--directly bound to the specific heterocyclic group. These heterocyclic compounds are useful as medicines, particularly as antagonists of SRS-A (slow reacting substance of anaphylaxis).Type: GrantFiled: April 5, 1991Date of Patent: January 19, 1993Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Toshiyasu Mase, Ryuji Tsuzuki, Hiromu Hara, Kiyoshi Murase, Kenichi Tomioka
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Patent number: 5079256Abstract: A compound of the formula (I) or its salt and a process for producing the compounds. The compounds have the effect of dilating neophrovascular tracts; ##STR1## wherein ##STR2## represents the formula ##STR3## wherein R.sup.4 is a hydrogen atom or lower alkylsulfonyl;R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino;R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkylsulfonylamino;R.sup.3 is hydrogen, lower alkyl, or hydroxyl;R is hydrogen or halogen;with the proviso that when R.sup.1 is hydroxyl, there is no case that all of R.sup.2, R.sup.3 and R are hydrogens, and further with the proviso that when R is hydrogen, A excludes ##STR4## or a salt thereof.Type: GrantFiled: September 26, 1989Date of Patent: January 7, 1992Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Akihiro Tanaka, Takashi Fujikura, Ryuji Tsuzuki, Masaki Yokota, Takeyuki Yatsu
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Patent number: 5077406Abstract: A compound of the formula (I) or its salt and a process for producing the compounds; The compounds have the effect to dilate neophrovascular tracts; ##STR1## wherein ##STR2## represents the formula ##STR3## (wherein R.sup.4 is a hydrogen atom or lower alkylsulfonyl); R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino;R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkysulfonylamino;R.sup.3 is hydrogen, lower alkyl, or hydroxyl;R is hydrogen or halogen;with the proviso that when R.sup.1 is hydroxyl, there is no case that all of R.sup.2, R.sup.3 and R are hydrogens, and further with the proviso that when R is hydrogen. A excludes ##STR4## or a salt thereof.Type: GrantFiled: May 3, 1990Date of Patent: December 31, 1991Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Akihiro Tanaka, Takashi Fujikura, Ryuji Tsuzuki, Masaki Yokota, Takeyuki Yatsu
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Patent number: 4966904Abstract: A compound of the formula (I) or its salt and a process for producing the compounds; The compounds have the effect to dilate neophrovascular tracts; ##STR1## Wherein ##STR2## represents the formula ##STR3## (wherein R.sup.4 is a hydrogen atom or lower alkylsulfonyl); R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino;R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkylsulfonylamino;R.sup.3 is hydrogen, lower alkyl, or hydroxyl;R is hydrogen or halogen;with the proviso that when R.sup.1 is hydroxyl, there is no case that all of R.sup.2, R.sup.3 and R are hydrogens, and further with the proviso that when R is hydrogen, A excludes ##STR4## or a salt therof.Type: GrantFiled: March 9, 1989Date of Patent: October 30, 1990Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Akihiro Tanaka, Takashi Fujikura, Ryuji Tsuzuki, Masaki Yokota, Takeyuki Yatsu
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Patent number: 4933348Abstract: This invention relates to novel heterocyclic compounds structurally characterized by containing a specific heterocyclic group and by the presence of --CH.sub.2 --S-- directly bound to the specific heterocyclic group. These heterocyclic compounds are useful as medicines, particularly as antagonists of SRS-A (slow reacting substance of anaphylaxis).Type: GrantFiled: August 4, 1988Date of Patent: June 12, 1990Inventors: Toshiyasu Mase, Ryuji Tsuzuki, Hiromu Hara, Kiyoshi Murase, Kenichi Tomioka
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Patent number: 4876261Abstract: A compound of the formula (I) or its salt and a process for producing the compounds; The compounds have the effect to dilate neophrovascular tracts; ##STR1## wherein ##STR2## represents the formula ##STR3## (wherein R.sup.4 is a hydrogen atom or lower alkylsulfonyl); R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino;R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkylsulfonylamino;R.sup.3 is hydrogen, lower, alkyl or hydroxyl;R is hydrogen or halogen;with the proviso that when R.sup.1 is hydroxyl, there is no case that all of R.sup.2, R.sup.3 and R are hydrogens, and further with the proviso that when R is hydrogen, A excludes ##STR4## or a salt thereof.Type: GrantFiled: March 25, 1988Date of Patent: October 24, 1989Inventors: Akihiro Tanaka, Takashi Fujikura, Ryuji Tsuzuki, Masaki Yokota, Takeyuki Yatsu
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Patent number: 4803211Abstract: This invention relates to novel heterocyclic compounds structurally characterized by containing a specific heterocyclic group and by the presence of --CH.sub.2 --S-- directly bound to the specific heterocyclic group. These heterocyclic compounds are useful as medicines, particularly as antagonists of SRS-A (slow reacting substance of anaphylaxis).Type: GrantFiled: July 14, 1986Date of Patent: February 7, 1989Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Toshiyasu Mase, Ryuji Tsuzuki, Hiromu Hara, Kiyoshi Murase, Kenichi Tomioka