Patents by Inventor Takao Furusho

Takao Furusho 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: 5878747
    Abstract: A condom prophylactic against AIDS infection coated with acidic polysaccharides is provided which has an antiviral action and a method of the manufacture thereof. The acidic polysaccharides can be polysaccharides, protein-bound saccharides and glycolipids such as extracts from sea-weeds, extracts from Procaryomycota and Eucaryomycota, carrageenan and so on which have acidic groups such as sulfuric acid group in a portion of polysaccharides. A condom is coated with a solution of said acidic polysaccharides, and optionally with a lubricant. AIDS infection can be prevented without side effect by using a condom of the present invention.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: March 9, 1999
    Assignee: Fuji Latex Co., Ltd.
    Inventors: Yutaka Enomoto, Masahiko Fujii, Takao Furusho, Naoki Yamamoto
  • Patent number: 5089481
    Abstract: Disclosed herein are polysaccharides extracted from marine algae and an antiviral drug containing as active ingredient polysaccharides extracted from seaweeds.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: February 18, 1992
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeaki Muto, Koichi Niimura, Minoru Oohara, Yoshiharu Oguchi, Kenichi Matsunaga, Kunitaka Hirose, Junji Kakuchi, Norifumi Sugita, Takao Furusho, Chikao Yoshikumi, Masaaki Takahashi
  • Patent number: 5008243
    Abstract: Disclosed herein is a pharmaceutical composition having antirheumatic activity, antithrombotic activity, analgetic activity, antipyretics activity, anti-hyperlipemic activity and anti-inflammatory activity and activities of reducing the level of blood sugar, raising the coronary blood flow, improving the capability of deformation of erythrocytes, reducing the blood pressure, ameliorating proteinuria and proteinemia and regulating production or metabolism of prostaglandins in a mammal in dosage unit form, which comprises a dosage effective to produce said activities of a glycoprotein having a molecular weight of 5000 to 300,000 as determined by ultracentrifugal method and about 18 to 38% by weight of proteins, produced by culturing a basidiomycetous fungal species belonging to the genus Coriolus, extracting the thus proliferated mycelia or fruit bodies with hot water or aqueous alkali solution and removing low molecular weight substances having a molecular weight of less than 5000 from the extract.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: April 16, 1991
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masanori Ikuzawa, Yoshiharu Oguchi, Kenichi Matsunaga, Noriyuki Toyoda, Takao Furusho, Takayoshi Fujii, Chikao Yoshikumi
  • Patent number: 4985543
    Abstract: Disclosed herein are lectins extracted form a plant of the class Dicotyledoneae and an antiretoviral drug comprising as an active ingredient an effective amount of the lectins.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: January 15, 1991
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Norifumi Sugita, Koichi Niimura, Yoshiharu Oguchi, Kunitaka Hirose, Kenichi Matsunaga, Minoru Oohara, Shigeaki Muto, Junji Kakuchi, Takao Furusho, Chikao Yoshikumi, Masaaki Takahashi
  • Patent number: 4820689
    Abstract: Disclosed herein is a pharmaceutical composition having antirheumatic activity, antithrombotic activity, analgetic activity, antipyretic activity, anti-hyperlipemic activity and anti-inflammatory activity and activities of reducing the level of blood sugar, raising the coronary blood flow, improving the capability of deformation of erythrocytes, reducing the blood pressure, ameliorating proteinuria and proteinemia and regulating production or metabolism of prostaglandins in a mammal in dosage unit form, which comprises a dosage effective to produce said activities of a glycoprotein having a molecular weight of 5000 to 300000 as determined by ultracentrifugal method and about 18 to 38% by weight of proteins, produced by culturing a basidiomycetous fungal species belonging to the genus Coriolus, extracting the thus proliferated mycelia or fruit bodies with hot water or aqueous alkali solution and removing low molecular weight substances having a molecular weight of less than 5000 from the extract.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: April 11, 1989
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masanori Ikuzawa, Yoshiharu Oguchi, Kenichi Matsunaga, Noriyuki Toyoda, Takao Furusho, Takayoshi Fujii, Chikao Yoshikumi
  • 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: 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: 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: 4663438
    Abstract: Disclosed herein is a nucleic acid-containing glycoprotein having molecular weight of 5,000 to 300,000 as determined by ultracentrifugal method; the weight ratio of protein moiety thereof determined by Lowry-Folin's method to saccharide moiety thereof determined by phenol-sulfuric acid method of in the range of 50/50 to 80/20; N-terminal amino acid thereof consisting essentially of tyrosine, leucine or alanine; leucine-phenylalanine-valine as amino acid sequence at C-terminal thereof; the elementary composition consisting essentially of 35.2 to 49.3% of C, 4.8 to 8.0% of H, 4.3 to 12.3% of N, trace to 2.5% of S, trace to 1.2% of P and the balance of O; the isoelectric point of in the range of pH 2.5 to 5.0; and nucleic acid as a component.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: May 5, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Takayoshi Fujii, Takao Furusho, Kenichi Matsunaga, Minoru Ohara, Akira Kobayashi
  • Patent number: 4540689
    Abstract: A penicillin derivative having an antibacterial activity similar to a penicillin antibiotic in a living body without affecting the intestinal bacterial colonies, a process for preparing the derivative and a pharmaceutical composition in a dosage unit form containing the derivative as an active ingredient are disclosed.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: September 10, 1985
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeaki Muto, Kouichi Niimura, Takao Ando, Akihiko Kanno, Takao Furusho, Chikao Yoshikumi
  • Patent number: 4496561
    Abstract: A cephalosporin derivative having an antibacterial activity similar to a cephalosporin antibiotic in living bodies without affecting the intestinal bacterial colonies, a method for preparing the derivative and a pharmaceutical composition in a dosage unit form containing the derivative as an active ingredient are disclosed.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: January 29, 1985
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeaki Muto, Kouichi Niimura, Takao Ando, Akihiko Kanno, Takao Furusho, Chikao Yoshikumi
  • Patent number: 4496574
    Abstract: A penicillin derivative having an antibacterial activity similar to a penicillin antibiotic in a living body without affecting the intestinal bacterial colonies, a process for preparing the derivative and a pharmaceutical composition in a dosage unit form containing the derivative as an active ingredient are disclosed.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: January 29, 1985
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeaki Muto, Kouichi Niimura, Takao Ando, Akihiko Kanno, Takao Furusho, Chikao Yoshikumi
  • Patent number: 4446137
    Abstract: A compound having the general formula (I) is derived from a cephalosporin; ##STR1## wherein R' is a hydrogen atom, an alkyl group having 1 to 4 atoms or an alkali metal and R is --CH.sub.2 COOR', --CH.sub.2 CH.sub.2 SR', ##STR2## or --CH.sub.2 CH.sub.2 COOR' wherein R' is defined above. A pharmaceutical composition containing the compound is excellent in an antibacterial activity, the activity being recovered by the action of an activating enzyme in a living body although the compound per se shows a low activity against the beneficial bacterial colonies in a living body.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: May 1, 1984
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeaki Muto, Kouichi Niimura, Takao Ando, Masahiko Fujii, Takao Furusho, Chikao Yoshikumi
  • Patent number: 4439434
    Abstract: A compound having the general formula (I) is derived from a cephalosporin; ##STR1## wherein R' is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or an alkali metal.A pharmaceutical composition containing the compound is excellent in an antibacterial activity, the activity being recovered by the action of an activating enzyme in a living body although the compound per se shows a low activity against the beneficial bacterial colonies in a living body.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: March 27, 1984
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeaki Muto, Kouichi Niimura, Takao Ando, Masahiko Fujii, Takao Furusho, Chikao Yoshikumi
  • Patent number: 4162939
    Abstract: The Basidiomycetes belonging to the genus Coriolus of family Polyporaceae are cultivated by using a glucose-yeast extract medium with the mixed ratio of glucose to yeast extract being within a specified range to improve the yield of mycelia obtained by the cultivation.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: July 31, 1979
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chikao Yoshikumi, Takao Furusho, Kenichi Matsunaga, Noriyuki Toyoda