Patents by Inventor Takeshi Oshima

Takeshi Oshima 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: 6755904
    Abstract: In order to control volatilization or release of organic solvent, especially formaldehyde, and to adsorb them, and at the same time, to improve weather resistance, water resistance, stain resistance and fungus resistance, natural paint is composed of vegetable drying oil, haze wax, candelilla wax and carnauba wax as the main components, and contains at least one or more of rosin, silk powder and component of rice bran.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: June 29, 2004
    Assignee: Cerarica Noda Co., Ltd.
    Inventors: Taizo Noda, Yasushi Kaga, Takeshi Oshima
  • Publication number: 20030183126
    Abstract: In order to control volatilization or release of organic solvent, especially formaldehyde, and to adsorb them, and at the same time, to improve weather resistance, water resistance, stain resistance and fungus resistance, natural paint is composed of vegetable drying oil, haze wax, candelilla wax and carnauba wax as the main components, and contains at least one or more of rosin, silk powder and component of rice bran.
    Type: Application
    Filed: March 27, 2003
    Publication date: October 2, 2003
    Inventors: Taizo Noda, Yasushi Kaga, Takeshi Oshima
  • Patent number: 6331815
    Abstract: A dual-frequency matching circuit of the present invention comprises an output terminal to which a load is connected, an input terminal through which an input signal is input to the load, a series resonance circuit, which is composed of a series capacitor and a series inductor connected in series to the series capacitor and disposed in such a manner that it is connected in series to the load when observed from the input terminal side, and a parallel resonance circuit, which is composed of a parallel capacitor and a parallel inductor connected in parallel to the parallel capacitor, and disposed in such a manner that it is connected in parallel to the entire portion of the load and the series resonance circuit when observed from the input terminal side.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: December 18, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takeshi Oshima, Hiromitsu Uchida, Yasushi Itoh
  • Patent number: 5559109
    Abstract: A method of treating a PAF-mediated pathology or for treating or preventing psoriasis, nephritis, asthma, inflammation or shock by administering an effective amount of a PAF antagonist of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each --R.sup.5, --CH.dbd.CH--R.sup.5 or --C.tbd.C--R.sup.5 ; R.sup.5 is an unsubstituted or substituted C.sub.6 -C.sub.14 carbocyclic aryl of an aromatic heterocyclic having from 5 to 14 ring atoms, of which from 1 to 5 are hetero-atoms selected from the group consisting of nitrogen, oxygen and sulfur, the heterocyclic group being unsubstituted or substituted; R.sup.3 is hydrogen, a C.sub.1 -C.sub.6 alkyl, cyano, or --R.sup.5 ; X is oxygen or sulfur; A is a 1,4-piperazin-1,4-diyl or a 1,4-homopiperazin-1,4-diyl; B is a C.sub.1 -C.sub.6 alkylene, carbonyl, thiocarbonyl, sulfinyl or sulfonyl; and R.sup.4 is an unsubstituted or substituted phenyl group.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: September 24, 1996
    Assignee: Sankko Company, Limited
    Inventors: Norio Nakamura, Nobuyuki Ohkawa, Takeshi Oshima, Masaaki Miyamoto, Yasuteru Iijima
  • Patent number: 5556852
    Abstract: Compounds of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 is each --R.sup.5, --CH.dbd.CH--R.sup.5 or --C.tbd.C--R.sup.5, wherein R.sup.5 is optionally substituted aryl or aromatic heterocyclic; R.sup.3 is hydrogen, alkyl, cyano or --R.sup.5 ; X is oxygen or sulfur A is 1,4-piperazin-1,4-diyl or a 1,4-homopiperazin-1,4-diyl; B' is alkylene, carbonyl, thiocarbonyl, sulfinyl or sulfonyl: and R.sup.4 is optionally substituted phenyl and pharmaceutically acceptable salts thereof have valuable PAF antagonist activity.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: September 17, 1996
    Assignee: Sankyo Company, Limited
    Inventors: Norio Nakamura, Nobuyuki Ohkawa, Takeshi Oshima, Masaaki Miyamoto, Yasuteru Iijima
  • Patent number: 5470851
    Abstract: Thiazolidinecarboxylic acid amides having combined antiallergic and antiasthmatic activities with an antagonist activity against platelet Activating Factor and having the following general formula (I) ##STR1##
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: November 28, 1995
    Assignee: Sankyo Company, Limited
    Inventors: Hiroshi Fukumi, Toshiaki Sakamoto, Mitsuo Sugiyama, Takeshi Yamaguchi, Takeshi Oshima, Fumitoshi Asai, Yasuteru Iijima
  • Patent number: 5369106
    Abstract: Compounds of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 is each --R.sup.5, --CH.dbd.CH--R.sup.5 or --C.tbd.C--R.sup.5, wherein R.sup.5 is optionally substituted aryl or aromatic heterocyclic; R.sup.3 is hydrogen, alkyl, cyano or --R.sup.5 ; X is oxygen or sulfur; A a 1,4-homopiperazin-1,4-diyl; B' is alkylene, carbonyl, thiocarbonyl, sulfinyl or sulfonyl; and R.sup.4 is optionally substituted phenyl and pharmaceutically acceptable salts thereof have valuable PAF antagonist activity, and may be prepared by reacting a compound containing the homopiperazine part of the molecule with a compound containing the other part of the molecule.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: November 29, 1994
    Assignee: Sankyo Company, Limited
    Inventors: Norio Nakamura, Nobuyuki Ohkawa, Takeshi Oshima, Masaaki Miyamoto, Yasuteru Iijima
  • Patent number: 5308867
    Abstract: A series of new compounds, called "the phomactins" is provided and may be isolated from the culture broth of fungi of the genus Phoma. especially Phomas sp. SANK 11486 (No. FERM BP-2598). These compounds are platelet activating factor antagonists and may be used for the treatment of disorders for which known such agents may also be used.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: May 3, 1994
    Assignee: Sankyo Company, Limited
    Inventors: Aiya Sato, Michihiro Sugano, Kouhei Furuya, Takeshi Oshima, Harumitsu Kuwano, Tadashi Hata, Hideyuki Haruyama
  • Patent number: 5192766
    Abstract: Compounds of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 is each --R.sup.5, --CH.dbd.CH--R.sup.5 or --C.tbd.C--R.sup.5, wherein R.sup.5 is optionally substituted aryl or aromatic heterocyclic; R.sup.3 is hydrogen, alkyl, cyano or --R.sup.5 ; X is oxygen or sulfur; A is 1,4-piperazin-1,4-diyl or a 1,4-homopiperazin-1,4-diyl; B' is alkylene, carbonyl, thiocarbonyl, sulfinyl or sulfonyl; and R.sup.4 is optionally substituted phenyl and pharmaceutically acceptable salts thereof have valuable PAF antagonist activity, and may be prepared by reacting a compound containing the piperazine or homopiperazine part of the molecular with a compound containing the other part of the molecule.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: March 9, 1993
    Assignee: Sankyo Company, Limited
    Inventors: Norio Nakamura, Nobuyuki Ohkawa, Takeshi Oshima, Masaaki Miyamoto, Yasuteru Iijima
  • Patent number: 5153003
    Abstract: A composition comprising a polymer having dispersed therethrough a prostacyclin derivative selected from the group consisting of compounds of formula (I): ##STR1## (in which R.sup.1 represents hydrogen or lower alkyl, R.sup.2 represents a C.sub.3 -C.sub.12 alkyl group or a C.sub.3 -C.sub.12 alkenyl group; and n is an integer from 1 to 5; and pharmaceutically acceptable salts thereof) can be used to make a medical appliance from which the prostaglandin, having antithrombotic properties, will be released gradually and in a controlled way.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: October 6, 1992
    Assignee: Sankyo Company Limited
    Inventors: Kozo Kurihara, Hironobu Saito, Yukie Misho, Takeshi Oshima
  • Patent number: 5151529
    Abstract: A series of new compounds, called "the phomactins" is provided and may be isolated from the culture broth of fungi of the genus Phoma, especially Phoma sp. SANK 11486 (No. FERM BP-2598). These compounds are platelet activating factor antagonists and may be used for the treatment of disorders for which known such agents may also be used.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: September 29, 1992
    Assignee: Sankyo Company, Limited
    Inventors: Aiya Sato, Michihiro Sugano, Kouhei Furuya, Takeshi Oshima, Harumitsu Kuwano, Tadashi Hata, Hideyuki Haruyama
  • Patent number: 5068340
    Abstract: Glycerol derivatives having at least one heterocyclic group on the 1 or 2 position are PAF antagonists which may be used to treat asthma, inflammation and shock.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: November 26, 1991
    Assignee: Sankyo Company, Limited
    Inventors: Norio Nakamura, Hiroyuki Koike, Takeshi Oshima
  • Patent number: 5021444
    Abstract: Compounds of formula (I): ##STR1## (wherein n is 0 or 1, R.sup.1 and R.sup.2 are hydrogen or alkyl, one of A.sup.1 and A.sup.2 is --Z--Y and the other is --W--COOH, where W and Z are alkenylene or alkylene and Y is imidazolyl or pyridyl, and the broken lines represent two single bonds or one single bond and one double bond) and their salts, esters and amides have the ability to inhibit the synthesis of thromboxane A.sub.2 and hence are useful in the treatment of prophylaxis of thrombotic conditions. They may be prepared by introducing an imidazolyl or pyridyl group into the corresponding compound in which Y is replaced by an active group or atom.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: June 4, 1991
    Assignee: Sankyo Company Limited
    Inventors: Atsusuke Trada, Yoshiya Amemiya, Keiichi Matsuda, Takeshi Oshima
  • Patent number: 4995898
    Abstract: Novel imidazole compounds are disclosed, which are represented by the following general formula: ##STR1## wherein: R.sub.1 represents a cyano group or a --CSNHR.sub.5 group, wherein R.sub.5 represents a hydrogen atom, a C.sub.1-4 alkyl group, or a --COR.sub.6 group, wherein R.sub.6 represents a C.sub.1-4 alkyl group, a halogenated C.sub.1-4 alkyl group, or a phenyl group;R.sub.2 and R.sub.3 each represents a hydrogen atom; a halogen atom; a nitro group; a cyano group; a trimethylsilyl group; a C.sub.3-6 cycloalkyl group; a naphthyl group; a C.sub.1-12 alkyl group which is optionally substituted with one or more halogen atoms, hydroxyl groups, acetoxy groups, C.sub.1-4 alkoxy groups, halogenated C.sub.1-4 alkoxy groups, phenyl groups, halogenated phenyl groups, or C.sub.1-4 alkylated phenyl groups; a C.sub.2-10 alkenyl group which is optionally substituted with one or more halogen atoms; a C.sub.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: February 26, 1991
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Rikuo Nasu, Terumasa Komyoji, Toshio Nakajima, Kazumi Suzuki, Keiichiro Ito, Takeshi Oshima, Hideshi Yoshimura
  • Patent number: 4898862
    Abstract: Compounds of formula (I): ##STR1## (in which: R.sup.1 is hydrogen or alkl; R.sup.2 is a variety of groups or atoms; R.sup.3 is optionally substituted hydroxy or --(NH).sub.n --NR.sup.5 R.sup.6, wherein R.sup.5 and R.sup.6 are a variety of groups or atoms, preferably alkyl substituted by heterocyclic, and n is 0 or 1; Q is oxygen or sulfur; and A is a C.sub.1 -C.sub.6 alkylene group) have valuable cardiotionic activity and may be used for the treatment of cardiac disorders. They may be prepared from corresponding compounds containing a benzene ring with a group --QH at the 1-position and a group --CO--CHR.sup.1 --NH--COOR.sup.7 at the 4-position by ring closure and introduction of the group of formula --A--CO--R.sup.3 in any order.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: February 6, 1990
    Assignee: Sankyo Company Limited
    Inventors: Yasuhiro Morisawa, Mitsuru Kataoka, Mitsuo Sugiyama, Fujio Saito, Hiroyuki Koike, Takeshi Oshima, Yasuo Simoji, Hitoshi Nagahori
  • Patent number: 4894385
    Abstract: Compounds of formula (I): ##STR1## (wherein n is 0, 1 or 2 and R.sup.1, R.sup.2, R.sup.4, R.sup.5, R.sup.6, X, Y and Z are a variety of groups and atoms) have the ability to inhibit the synthesis of thromboxane A.sub.2 and hence are useful in the treatment or prophylaxis of thrombotic conditions.
    Type: Grant
    Filed: January 14, 1986
    Date of Patent: January 16, 1990
    Assignee: Sankyo Company Limited
    Inventors: Isao Kawamoto, Rokuro Endo, Keiichi Matsuda, Shigeru Ushiyama, Takeshi Oshima
  • Patent number: 4847272
    Abstract: Compounds of formula (I): ##STR1## (wherein n is 0 or 1, R.sup.1 and R.sup.2 are hydrogen or alkyl, one of A.sup.1 and A.sup.2 is --Z--Y and the other is --W--COOH, where W and Z are alkenylene or alkylene and Y is imidazolyl or pyridyl, and the broken lines represent two single bonds or one single bond and one double bond) and their salts, esters and amides have the ability to inhibit the synthesis of thromboxane A.sub.2 and hence are useful in the treatment or prophylaxis of thrombotic conditions. They may be prepared by introducing an imidazolyl or pyridyl group into the corresponding compound in which Y is replaced by an active group or atom.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: July 11, 1989
    Assignee: Sankyo Company Limited
    Inventors: Atsusuke Terada, Yoshiya Amemiya, Keiichi Matsuda, Takeshi Oshima
  • Patent number: 4777184
    Abstract: Prostaglandin derivatives, and specifically derivatives of isocarbacyclin, have an optionally substituted methylene group as a substituent on the .alpha.-carbon atom of the .alpha.-side chain. They have a variety of physiological effects, notably a strong ability to inhibit blood platelet aggregation and a strong anti-ulcer activity.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: October 11, 1988
    Assignee: Sankyo Company Limited
    Inventors: Koichi Kojima, Shigeo Amemiya, Kazuo Koyama, Nobuyoshi Iwata, Takeshi Oshima