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).

  • Patent number: 6797711
    Abstract: 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: Grant
    Filed: June 26, 2003
    Date of Patent: September 28, 2004
    Assignee: Pola Chemical Industries, Inc.
    Inventors: Nobuyuki Kawakatsu, Takayuki Namiki, Norihisa Yamazaki, Masayuki Yuasa, Toyohiko Miki, Noriko Suenobu, Tomomasa Shimanuki
  • Publication number: 20040053940
    Abstract: Benzofuran derivatives represented by formula (I) or salts thereof: 1
    Type: Application
    Filed: June 26, 2003
    Publication date: March 18, 2004
    Inventors: Nobuyuki Kawakatsu, Takayuki Namiki, Norihisa Yamazaki, Masayuki Yuasa, Toyohiko Miki, Noriko Suenobu, Tomomasa Shimanuki
  • Patent number: 6586633
    Abstract: 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: Grant
    Filed: April 5, 2001
    Date of Patent: July 1, 2003
    Assignee: Pola Chemical Industries, Inc.
    Inventors: Masayuki Yuasa, Yukio Kawazu, Toshimitsu Suzuki, Toshiro Majima, Takao Itoh, Takuji Nakashima, Akira Nozawa, Hiroyuki Takimoto, Kouji Yokoyama
  • Patent number: 6329382
    Abstract: 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: Grant
    Filed: August 13, 1999
    Date of Patent: December 11, 2001
    Assignee: Pola Chemical Industries, Inc.
    Inventors: Takayuki Namiki, Masayuki Yuasa, Takako Takakuwa, Satoshi Ichinomiya, Masashi Tamai, Naoki Hiyama, Yukio Kawazu, Tomoaki Yahiro, Mayumi Sugio
  • Patent number: 6329399
    Abstract: 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: Grant
    Filed: May 18, 2000
    Date of Patent: December 11, 2001
    Assignee: Pola Chemical Industries, Inc.
    Inventors: Takao Itoh, Takuji Nakashima, Akira Nozawa, Kouji Yokoyama, Hiroyuki Takimoto, Masayuki Yuasa, Yukio Kawazu, Toshimitsu Suzuki, Toshiro Majima
  • Patent number: 6136863
    Abstract: 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: Grant
    Filed: August 7, 1998
    Date of Patent: October 24, 2000
    Assignee: Pola Chemical Industries, Inc.
    Inventors: Yukio Kawazu, Masayuki Yuasa, Toshimitsu Suzuki, Takuji Nakashima, Takao Itoh, Toshiro Majima
  • Patent number: 6057330
    Abstract: 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: Grant
    Filed: January 25, 1999
    Date of Patent: May 2, 2000
    Assignee: 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
  • Patent number: 6015925
    Abstract: 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: Grant
    Filed: September 22, 1998
    Date of Patent: January 18, 2000
    Assignee: Pola Chemical Industries, Inc.
    Inventors: Yukio Kawazu, Toshimitsu Suzuki, Masayuki Yuasa, Yuichi Yokomizo, Toshiro Majima, Takao Ito, Takuji Nakashima, Akira Nozawa
  • Patent number: 5942515
    Abstract: 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: Grant
    Filed: February 2, 1998
    Date of Patent: August 24, 1999
    Assignee: 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
  • Patent number: 5245034
    Abstract: 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: Grant
    Filed: March 23, 1992
    Date of Patent: September 14, 1993
    Assignee: Kiroyoshi Hidaka
    Inventors: Hiroyoshi Hidaka, Tomohiko Ishikawa, Masatoshi Hagiwara, Tsutomu Inoue, Kenji Naitoh, Osamu Sakuma, Masayuki Yuasa, Tadashi Morita, Tadashi Toshioka, Isao Umezawa, Takashi Inaba
  • Patent number: 5245050
    Abstract: 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: Grant
    Filed: October 3, 1989
    Date of Patent: September 14, 1993
    Assignee: Tobishi Yakuhin Kogyo Kabushiki Kaisha
    Inventors: Akira Endo, Tadashi Toshioka, Isao Umezawa, Masayuki Yuasa, Takashi Inaba, Tsutomu Inoue
  • Patent number: 5216150
    Abstract: 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: Grant
    Filed: September 12, 1991
    Date of Patent: June 1, 1993
    Assignees: Hiroyoshi Hidaka, Tobishi Yakuhin Kogyo Kabushiki Kaisha
    Inventors: Hiroyoshi Hidaka, Tomohiko Ishikawa, Masatoshi Hagiwara, Tsutomu Inoue, Kenji Naitoh, Osamu Sakuma, Masayuki Yuasa, Tadashi Morita, Tadashi Toshioka, Isao Umezawa, Takashi Inaba
  • Patent number: 5081246
    Abstract: 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: Grant
    Filed: December 20, 1989
    Date of Patent: January 14, 1992
    Assignees: Hiroyoshi Hidaka, Tobishi Yakuhin Kogyo Kabushiki Kaisha
    Inventors: Horoyoshi Hidaka, Tomohiko Ishikawa, Masatoshi Hagiwara, Tsutomu Inoue, Kenji Naitoh, Osamu Sakuma, Masayuki Yuasa, Tadashi Morita, Tadashi Toshioka, Isao Umezawa, Takashi Inaba
  • Patent number: 5059692
    Abstract: 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: Grant
    Filed: August 30, 1990
    Date of Patent: October 22, 1991
    Inventors: Hiroyoshi Hidaka, Tomohiko Ishikawa, Tsutomu Inoue, Masayuki Yuasa, Takashi Inaba, Kenji Naito, Osamu Sakuma, Tadashi Morita, Shinpei Kidokoro