Patents by Inventor Masayuki Yuasa
Masayuki Yuasa 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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Patent number: 6797711Abstract: Benzofuran derivatives represented by formula (I) or salts thereof: (wherein R1 represents a phenyl group or a hydrogen atom; k is 0 or 1; each of m, n, o, p, and q is an integer of 0 to 5; and each of R2 and R3 represents a hydrogen atom or a hydroxyl group, or R2 and R3 together represent an oxygen atom, with proviso that k, q, and m, or n, o, and p are not simultaneously 0). The compounds inhibit phosphorylation of STAT 6 and are useful in the treatment or prevention of allergic diseases.Type: GrantFiled: June 26, 2003Date of Patent: September 28, 2004Assignee: Pola Chemical Industries, Inc.Inventors: Nobuyuki Kawakatsu, Takayuki Namiki, Norihisa Yamazaki, Masayuki Yuasa, Toyohiko Miki, Noriko Suenobu, Tomomasa Shimanuki
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Publication number: 20040053940Abstract: Benzofuran derivatives represented by formula (I) or salts thereof: 1Type: ApplicationFiled: June 26, 2003Publication date: March 18, 2004Inventors: Nobuyuki Kawakatsu, Takayuki Namiki, Norihisa Yamazaki, Masayuki Yuasa, Toyohiko Miki, Noriko Suenobu, Tomomasa Shimanuki
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Patent number: 6586633Abstract: The present invention relates to amine derivatives represented by formula (1) or salts thereof. R3 represents C1-C3 alkyl, hydroxylated C1-C5 alkyl, C1-C5 acyl; C2-C5 alkenyl, or a halogen atom; and k, l, and m are each an integer of 1 to 4.) Exhibiting excellent antifungal effect, these compounds are highly useful as antifungal agents, antifungal compositions, drugs, etc.Type: GrantFiled: April 5, 2001Date of Patent: July 1, 2003Assignee: Pola Chemical Industries, Inc.Inventors: Masayuki Yuasa, Yukio Kawazu, Toshimitsu Suzuki, Toshiro Majima, Takao Itoh, Takuji Nakashima, Akira Nozawa, Hiroyuki Takimoto, Kouji Yokoyama
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Patent number: 6329382Abstract: The invention relates to a therapeutic and preventive medicament for respiratory diseases, comprising, as an active ingredient, a compound represented by the general formula (1): wherein R1 represents a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms; and R2 represents a hydrogen or halogen atom, a substituted alkyl group, an amino group which may be substituted, a carboxyl group, an alkoxycarbonyl group, a carbamoyl group, or an alkylcarbamoyl group, or a salt thereof. This compound has excellent tracheobronchodilative effect and inhibitory effect on airway constriction.Type: GrantFiled: August 13, 1999Date of Patent: December 11, 2001Assignee: Pola Chemical Industries, Inc.Inventors: Takayuki Namiki, Masayuki Yuasa, Takako Takakuwa, Satoshi Ichinomiya, Masashi Tamai, Naoki Hiyama, Yukio Kawazu, Tomoaki Yahiro, Mayumi Sugio
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Patent number: 6329399Abstract: Novel amine derivatives having an excellent antimycotic effect represented by general formula (1) below and salts thereof are provided. [in the formula (1, R1 represents a C1-5 alkyl group which may be halogenated, R2 represents 4-(1,1-dimethylalkyl)benzyl group, 4-(1-methyl-phenylethyl)benzyl group, 1-or 2-naphthylmethyl group, or a hydrocarbon group having 3,3-dimethyl-1-butynyl group or a phenyl group at its terminal and 1 to 3 double bonds; R3 represents oxygen atom or a methylene group which may be substituted by a C1-4 alkyl group; and R4 represents 1-or 2 naphthyl group or a phenyl group which may be substituted.Type: GrantFiled: May 18, 2000Date of Patent: December 11, 2001Assignee: Pola Chemical Industries, Inc.Inventors: Takao Itoh, Takuji Nakashima, Akira Nozawa, Kouji Yokoyama, Hiroyuki Takimoto, Masayuki Yuasa, Yukio Kawazu, Toshimitsu Suzuki, Toshiro Majima
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Patent number: 6136863Abstract: This invention relates to compounds represented by the following formula (1): ##STR1## wherein R.sup.1 represents a substituted or unsubstituted phenyl group, R.sup.2 represents a substituted or unsubstituted phenylene group, R.sup.3 represents a substituted or unsubstituted phenyl group or an aliphatic hydrocarbon group containing at least four .pi. electrons, R.sup.4 represents an alkyl group having 1 to 4 carbon atoms, and m and n individually represent integers of from 1 to 4, or salts thereof, and also to compositions containing the same. These compounds have antifungal activities and are useful as drugs.Type: GrantFiled: August 7, 1998Date of Patent: October 24, 2000Assignee: Pola Chemical Industries, Inc.Inventors: Yukio Kawazu, Masayuki Yuasa, Toshimitsu Suzuki, Takuji Nakashima, Takao Itoh, Toshiro Majima
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Patent number: 6057330Abstract: The invention relates to compounds represented by the following general formula (1): ##STR1## wherein R.sup.1 represents an alkyl group, R.sup.2 represents an amino group, alkyl group or the like, and R.sup.3 represents a nitro group, amino group, heterocyclic group, alkylsulfonylamino group or the like, or salts thereof, medicines comprising such a compound, a preparation process of the compounds, and intermediates useful for preparation thereof. The compounds (1) are useful for the prevention and treatment of a respiratory disease.Type: GrantFiled: January 25, 1999Date of Patent: May 2, 2000Assignee: Pola Chemical Industries, Inc.Inventors: Takayuki Namiki, Masayuki Yuasa, Takako Takakuwa, Satoshi Ichinomiya, Yukio Kawazu, Kenichi Kishii, Norio Funayama, Mariko Harada, Kyoko Taneda, Naoki Hiyama, Tomoaki Yahiro, Mayumi Sugio, Masashi Tamai
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Patent number: 6015925Abstract: This invention relates to compounds represented by the following formula (1): ##STR1## wherein R.sup.1 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 18 carbon atoms, R.sup.2 represents a hydrogen atom or a substituted or unsubstituted aromatic hydrocarbon group having 6 to 18 carbon atoms, R.sup.3 represents an alkyl group having 1 to 4 carbon atoms, R.sup.4 represents a substituted or unsubstituted phenyl group or an aliphatic hydrocarbon group containing at least four .pi. electrons, and m and n individually represent integers of from 1 to 4, or salts thereof, and also to compositions containing the same. These compounds have antifungal activities and are useful as drugs and the like.Type: GrantFiled: September 22, 1998Date of Patent: January 18, 2000Assignee: Pola Chemical Industries, Inc.Inventors: Yukio Kawazu, Toshimitsu Suzuki, Masayuki Yuasa, Yuichi Yokomizo, Toshiro Majima, Takao Ito, Takuji Nakashima, Akira Nozawa
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Patent number: 5942515Abstract: The invention relates to compounds represented by the following general formula (1): ##STR1## wherein R.sup.1 represents an alkyl group, R.sup.2 represents an amino group, alkyl group or the like, and R.sup.3 represents a nitro group, amino group, heterocyclic group, alkylsulfonylamino group or the like, or salts thereof, medicines comprising such a compound, a preparation process of the compounds, and intermediates useful for preparation thereof. The compounds (1) are useful for the prevention and treatment of a respiratory disease.Type: GrantFiled: February 2, 1998Date of Patent: August 24, 1999Assignee: Pola Chemical Industries, Inc.Inventors: Takayuki Namiki, Masayuki Yuasa, Takako Takakuwa, Satoshi Ichinomiya, Yukio Kawazu, Kenichi Kishii, Norio Funayama, Mariko Harada, Kyoko Taneda, Naoki Hiyama, Tomoaki Yahiro, Mayumi Sugio, Masashi Tamai
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Patent number: 5245034Abstract: Novel quinoline sulfonamino derivatives having a vessel smooth muscle relaxation activity as well as a platelet agglutination inhibitory activity and inhibitory activity to protein kinase A, myosin light chain kinase, proteinkinase C, and calmodulindependent proteinkinase II, but having little action or cardio function; a process for the production of the derivatives, and a pharmaceutical composition containing the derivative.Type: GrantFiled: March 23, 1992Date of Patent: September 14, 1993Assignee: Kiroyoshi HidakaInventors: Hiroyoshi Hidaka, Tomohiko Ishikawa, Masatoshi Hagiwara, Tsutomu Inoue, Kenji Naitoh, Osamu Sakuma, Masayuki Yuasa, Tadashi Morita, Tadashi Toshioka, Isao Umezawa, Takashi Inaba
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Patent number: 5245050Abstract: A compound represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different, and represent a hydrogen or halogen, and ring-opened free acid, amides and salts thereof are provided. The present invention also provides a process for the production of the above-mentioned compound starting from the known compound ML-236B.Type: GrantFiled: October 3, 1989Date of Patent: September 14, 1993Assignee: Tobishi Yakuhin Kogyo Kabushiki KaishaInventors: Akira Endo, Tadashi Toshioka, Isao Umezawa, Masayuki Yuasa, Takashi Inaba, Tsutomu Inoue
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Patent number: 5216150Abstract: Novel quinoline sulfonamino derivatives having a vessel smooth muscle relaxation activity as well as a platelet agglutination inhibitory activity and inhibitory activity to protein kinase A, myosin light chain kinase, proteinkinase C, and calmodulindependent proteinkinase II, but having little action or cardio function; a process for the production of the derivatives, and a pharmaceutical composition containing the derivative.Type: GrantFiled: September 12, 1991Date of Patent: June 1, 1993Assignees: Hiroyoshi Hidaka, Tobishi Yakuhin Kogyo Kabushiki KaishaInventors: Hiroyoshi Hidaka, Tomohiko Ishikawa, Masatoshi Hagiwara, Tsutomu Inoue, Kenji Naitoh, Osamu Sakuma, Masayuki Yuasa, Tadashi Morita, Tadashi Toshioka, Isao Umezawa, Takashi Inaba
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Patent number: 5081246Abstract: Novel quinoline sulfonamino derivatives having a vessel smooth muscle relaxation activity as well as a platelet agglutination inhibitory activity and inhibitory activity to protein kinase A, myosin light chain kinase, proteinkinase C, and calmodulindependent proteinkinase II, but having little action or cardio function; a process for the production of the derivatives, and a pharmaceutical composition containing the derivative.Type: GrantFiled: December 20, 1989Date of Patent: January 14, 1992Assignees: Hiroyoshi Hidaka, Tobishi Yakuhin Kogyo Kabushiki KaishaInventors: Horoyoshi Hidaka, Tomohiko Ishikawa, Masatoshi Hagiwara, Tsutomu Inoue, Kenji Naitoh, Osamu Sakuma, Masayuki Yuasa, Tadashi Morita, Tadashi Toshioka, Isao Umezawa, Takashi Inaba
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Patent number: 5059692Abstract: Novel compounds represented by the formula: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 3 carbon atoms, R.sub.2 represents an amino group or a group of formula ##STR2## in which R.sub.4 represents an alkyl group having 1 to 3 carbon atoms, R.sub.5 represents an alkyl group having 1 to 3 carbon atoms or may combine with R.sub.6 to form a five or six membered ring containing 4 to 5 carbon atoms, R.sub.6 represents a hydrogen atom or may combine with R.sub.5 to form a five or six membered ring containing 4 to 5 carbon atoms, R.sub.3 represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a halogen atom, X represents a carbonyl group or a methylene group, Y represents a sulfur atom or a vinylene group and pharmaceutically acceptable salts thereof which exhibit a vasodilating activity and inhibitory activity for platelet aggregation. Thus, they are useful as therapeutic agents for treatment of angina pectoris, hypertension, throbosis and the like.Type: GrantFiled: August 30, 1990Date of Patent: October 22, 1991Inventors: Hiroyoshi Hidaka, Tomohiko Ishikawa, Tsutomu Inoue, Masayuki Yuasa, Takashi Inaba, Kenji Naito, Osamu Sakuma, Tadashi Morita, Shinpei Kidokoro