Patents by Inventor Takao Ando

Takao Ando 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: 5411964
    Abstract: A phenylalanine-glycine compound of formula (I): ##STR1## wherein R represents a residue of an antitumor substance, or a salt or ester thereof, a process for preparation thereof, and a pharmaceutical composition containing the same are described. The novel conjugate of the phenylalanine-glycine compound and the antitumor substance exhibits superior antitumor activity in comparison with the case wherein an antitumor substance is administered alone or as a mixture with phenylalanine.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: May 2, 1995
    Assignee: Kureha Chemical Industry Co., Ltd.
    Inventors: Koichi Niimura, Takako Kawabe, Takao Ando, Kenichi Saito
  • Patent number: 5407952
    Abstract: Azole derivatives (including stereoisomers and pharmaceutically acceptable salts) of the formula: ##STR1## wherein R.sub.1 and R.sub.2 each are H or C.sub.1 -C.sub.4 alkyl; R.sub.3 is H, OH, CN, halogen, haloalkyl, C.sub.1 -C.sub.4 alkyl or phenyl, and if there are two or more R.sub.3 groups, such R.sub.3 groups may be the same or different; n is an integer from 0 to 5; Y is N or CH; and X is O, S or NH have antimycotic and aromatase inhibitory activities. Compositions containing the azole derivatives and a method of treating mycosis and estrogen-dependent diseases by administering effective quantities of the azole derivatives are also disclosed.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: April 18, 1995
    Assignee: Kureha Chemical Industry Co., Ltd.
    Inventors: Kochi Niimura, Yuko Ikeda, Akira Kato, Takao Ando
  • Patent number: 5364908
    Abstract: Resin compositions of improved dispersibility and mechanical properties are obtained by polymerizing a polymerizable compound (A), insitu in a melted thermoplastic resin (B), in the presence of a dispersant (C) reactive or compatible with at least one of the resin (B) and polymerizate of (A).Suitable dispersants include those represented by the general formula (1) or (2)R.sub.1 --L(X--M--X--L).sub.n X--M--R.sub.2 (1)R.sub.1 --L(X--M--X--L).sub.n --R.sub.2 (2)wherein R.sub.1 and R.sub.2 are groups, such as hydrocarbyl acyl, alkoxy, hydroxyl, mercapto, amino, epoxy, isocyanate, carboxylic, carboxylic anhydride, carboxylic halide and aldehyde groups; L and M are residues of a polymer having a number average molecular weight of about 500-about 3,000,000, the difference in solubility parameter between the residue L or M and the resin (B) or polymerizate of (A) being not more than 0.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: November 15, 1994
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Masafumi Oishi, Hiroshi Nishimoto, Takao Ando, Yukio Shibata, Toshiaki Okamoto, Katsura Gohda
  • Patent number: 5324740
    Abstract: Azole derivatives (including stereoisomers and pharmaceutically acceptable salts) of the formula: ##STR1## wherein R.sub.1 and R.sub.2 each are H or C.sub.1 -C.sub.4 alkyl; R.sub.3 is H, OH, CN, halogen, haloalkyl, C.sub.1 -C.sub.4 alkyl or phenyl, and if there are two or more R.sub.3 groups, such R.sub.3 groups may be the same or different; n is an integer from 0 to 5; Y is N or CH; and X is O, S or NH have antimycotic and aromatase inhibitory activities. Compositions containing the azole derivatives and a method of treating mycosis and estrogen-dependent diseases by administering effective quantities of the azole derivatives are also disclosed.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: June 28, 1994
    Assignee: Kureha Chemical Industry Co., Ltd.
    Inventors: Koichi Niimura, Yuko Ikeda, Akira Kato, Takao Ando
  • Patent number: 5221785
    Abstract: A polymer composite comprises about 5 to 95 parts by weight of a copolymer (A) selected from the group consisting of olefin/diene copolymer and ethylene/(meth)acrylic acid ester copolymer, and 5 to 95 parts by weight of a polyurethane resin (B), wherein the polyurethane resin is one which is synthesized in the melted copolymer in the absence of a compatibilizer, a composition for molding comprising such polymer composite and electroconductive fillers and its molded article, and rubber contacts. The polymer composite possesses the flexibility and durability equivalent to those of silicone rubber, has excellent injection molding property, can be made by a short manufacturing process, and can be manufactured inexpensively. The polymer composite of the invention, when used together with an electroconductive filler, is effectively applied as rubber contacts, that is, flexible electric connection members of electric products.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: June 22, 1993
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takao Ando, Hiroshi Itayama, Katsura Gohda
  • Patent number: 4957906
    Abstract: Disclosed is a pharmaceutical composition containing an aminobenzoic acid derivative as an active ingredient represented by the following general formula: ##STR1## wherein .sup.1 R donotes one member selected from the group consisting of the residual groups formed by removing OH at 1(alpha) or 1(beta) position from arabinose, glucose, galactose and mannose, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: September 18, 1990
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando
  • Patent number: 4874750
    Abstract: Disclosed is a pharmaceutical composition containing an aminobenzoic acid derivative as an active ingredient represented by the following general formula: ##STR1## wherein .sup.1 R donotes one member selected from the group consisting of the residual groups formed by removing OH at 1(alpha) or 1(beta) position from arabinose, glucose, galactose and mannose, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: October 17, 1989
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando
  • Patent number: 4801581
    Abstract: Disclosed is a pharmaceutical composition containing p-aminobenzoic acid-N-D-xyloside or a pharmaceutically a acceptable salt thereof as an active ingredient.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: January 31, 1989
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohara, Takao Ando
  • Patent number: 4758558
    Abstract: Disclosed herein are the derivatives of substituted cephalosporanic acid represented by the formula (I): ##STR1## wherein R.sup.1 represents a 4-pyridylthiomethyl group, an alpha-aminobenzyl group, a cyanomethyl group or a 1-tetrazolylmethyl group; R.sup.2 represents a hydrogen atom, an acetoxy group or a (5-methyl-1,3,4-thiadiazol-2-yl)thio group; R.sup.3 represents a hydrogen atom, a hydroxyl group, a carbamoyl group, an alkyl group having 1 to 4 carbon atoms or --(CONH).sub.m (CH.sub.2).sub.n --COOH wherein m is 0 or 1, n is 0, 1 or 2 and the carboxyl group may have been converted to a salt or an ester thereof; p is 0, 1 or 2 and X represents carbon atom or nitrogen atom, and antibiotics comprising the derivatives of substituted cephalosporanic acid represented by the formula (I).
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: July 19, 1988
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Akihiko Kanno, Shigeaki Muto, Koichi Niimura, Takao Ando, Takayoshi Fujii, Masahiko Fujii, Takao Furusho, Chikao Yoshikumi
  • Patent number: 4757054
    Abstract: Disclosed is a pharmaceutical composition containing p-aminobenzoic acid-N-D-xyloside or a pharmaceutically a acceptable salt thereof as an active ingredient.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: July 12, 1988
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohara, Takao Ando
  • Patent number: 4748159
    Abstract: Disclosed is a method for the treatment of hyperglycemia, hyperlipemia, inflammatory diseases, pains due to the accentuation of central nerve, pyrexia due to the accentuation of central nerve or tumor, which comprises administering to a patient suffering therefrom a pharmaceutically effective amount of p-aminobenzoic acid-N-L-rhamnoside or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: May 31, 1988
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando
  • Patent number: 4734409
    Abstract: Disclosed herein are a cephalosporin derivative represented by the formula (I): ##STR1## wherein R.sup.1 represents a halogenoalkyl group, a salt and ester thereof, a process for producing the same, and a pharmaceutical composition and an antibacterial agent comprising the same.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: March 29, 1988
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeaki Muto, Chikao Yoshikumi, Takao Furusho, Isamu Motokawa, Yoko Onishi, Akihiko Kanno, Takayoshi Fujii, Takao Ando
  • Patent number: 4708950
    Abstract: Disclosed is a pharmaceutical composition containing an aminobenzoic acid derivative as an active ingredient represented by the following general formula: ##STR1## wherein .sup.1 R denotes one member selected from the group consisting of the residual groups formed by removing OH at 1(alpha) or 1(beta) position from arabinose, xylose, glucose, galactose, rhamnose and mannose, and .sup.2 R denotes hydrogen or methyl group, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: November 24, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando
  • Patent number: 4690920
    Abstract: Disclosed herein are a derivative of a substituted cephalosporanic acid, represented by the formula (I): ##STR1## wherein p is 0, 1 or 2 and R.sup.1 represents a hydrogen atom, a hydroxyl group, a carbamoyl group, an alkyl group having 1 to 4 carbon atoms or --(CONH).sub.m (CH.sub.2).sub.n --COOH wherein m is 0 or 1; n is 0, 1 or 2 and the carboxyl group may have been converted to the salt or the ester thereof, and an antibiotic comprising a derivative of substituted cephalosporanic acid represented by the formula (I).
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: September 1, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Akihiko Kanno, Shigeaki Muto, Koichi Niimura, Takao Ando, Takayoshi Fujii, Masahiko Fujii, Takao Furusho, Chikao Yoshikumi
  • Patent number: 4681877
    Abstract: Disclosed herein are 7-beta-[2-(2-amino-4-thiazolyl)-2-methoxyiminoacetamido]-3-(2-amino-1,3,4- thiadiazolyl-5-thiomethyl)-3-cepheme-4-carboxylic acid, salts thereof and pivaloyloxymethyl ester thereof, and a pharmaceutical composition containing the same as an active ingredient.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: July 21, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeaki Muto, Takao Ando, Takayoshi Fujii, Akihiko Kanno, Yoko Onishi, Isamu Motokawa, Takao Furusho, Chikao Yoshikumi
  • Patent number: 4673669
    Abstract: Disclosed is a pharmaceutical composition containing an aminobenzoic acid derivative as an active ingredient represented by the following general formula: ##STR1## wherein .sup.1 R donotes one member selected from the group consisting of the residual groups formed by removing OH at 1(alpha) or 1(beta) position from arabinose, glucose, galactose and mannose, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: June 16, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando
  • Patent number: 4663312
    Abstract: Disclosed is a method for the treatment of hyperglycemia, hyperlipemia, inflammatory diseases, pains due to the accentuation of central nerve, pyrexia due to the accentuation of central nerve or tumor, which comprises administering to a patient suffering therefrom a pharmaceutically effective amount of p-aminobenzoic acid-N-L-rhamnoside or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: May 5, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando
  • Patent number: 4657895
    Abstract: Disclosed is a pharmaceutical composition containing p-aminobenzoic acid-N-L-rhamonoside or a pharmaceutically acceptable salt thereof as an active ingredient.
    Type: Grant
    Filed: September 4, 1985
    Date of Patent: April 14, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando
  • Patent number: 4649133
    Abstract: Disclosed is a method for the treatment of hyperglycemia, hyperlipemia, inflammatory diseases, pains due to the accentuation of central nerve, pyrexia due to the accentuation of central nerve or tumor, which comprises administering to a patient suffering therefrom a pharmaceutically effective amount of p-aminobenzoic acid-N-L-rhamnoside or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: March 10, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando
  • Patent number: 4637998
    Abstract: Disclosed is a pharmaceutical composition containing an aminobenzoic acid derivative as an active ingredient represented by the following general formula: ##STR1## wherein .sup.1 R denotes one member selected from the group consisting of the residual groups formed by removing OH at 1(alpha) or 1(beta) position from arabinose, glucose, galactose and mannose, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: January 20, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Yoshio Ohmura, Fumio Hirose, Masanori Ikuzawa, Kenichi Matsunaga, Takayoshi Fujii, Minoru Ohhara, Takao Ando