Patents by Inventor Takeshi Uotani

Takeshi Uotani 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: 4695644
    Abstract: Phenyl chlorothioformates are produced in high yields easily and safely by (1) allowing sulfur dioxide to react with a mixed solution consisting of perchloromethyl mercaptan, an organic solvent and water, (2) removing the aqueous layer from the reaction mixture and (3) adding to the organic layer a phenol compound and a dehydrohalogenating agent in that order.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: September 22, 1987
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Kenji Tsuzuki, Takeshi Uotani
  • Patent number: 4621090
    Abstract: An antifungal composition comprising an effective amount of carbamate derivative having the formula (I): ##STR1## where X is 2-naphthyl, 5-indanyl, 5,6,7,8-tetrahydro-2-naphthyl, 1,4-methano-1,2,3,4-tetrahydro-6-naphthyl, 1,4-ethano-1,2,3,4-tetrahydro-6-naphthyl, 2-quinolyl, or a phenyl group having one or two of the same or different substituents selected from the group of halogen atom, lower alkyl, lower alkenyl, lower alkoxy, lower alkenyloxy, halogenated lower alkyl, lower alkylthio, lower alkylsulfonyl, lower alkylamino, nitro, and methylenedioxy;Y is an oxygen atom or a sulfur atom;Z is lower alkyl group;W is pyridyl group having one or two of the same substituents selected from the group of lower alkyl, lower alkoxy, lower alkenyloxy, and lower alkylamino.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: November 4, 1986
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Kazuo Iwata, Tetsuo Takematsu, Yuji Nonaka, Akira Nakanishi, Hideo Morinaka, Kenji Tsuzuki, Mitsuyuki Murakami, Takeshi Uotani
  • Patent number: 4223152
    Abstract: Isoindolinone pigments of an extremely high purity, which are represented by the following general formula: ##STR1## wherein R represents a carbocyclic bridge member such as:an unsubstituted phenylene or diphenylene group,a phenylene or diphenylene group substituted by chlorine atoms, methyl groups or methoxy groups, ora group expressed by the formula ##STR2## where X is oxygen or a methylene group; or R represents a heterocyclic bridge member such as: a pyridylene group; orR represents a direct bond,are prepared by a process wherein a crude isoindolinone pigment is dispersed in an aromatic hydrocarbon; (a) an alcoholate or hydroxide of an alkali metal and (b) a lower alcohol and/or water are incorporated in the crude isoindolinone pigment dispersion thereby forming an alkali metal salt of the isoindolinone pigment; and then, the so formed pigment salt is contacted with an acid thereby hydrolyzing the pigment salt into the free acid form.
    Type: Grant
    Filed: April 3, 1979
    Date of Patent: September 16, 1980
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Osamu Fujii, Misao Takano, Takeshi Uotani, Eiji Iwamoto
  • Patent number: 4146510
    Abstract: Flake- or sliver-like porous structures of a polymeric material heavily loaded with a finely divided inorganic substance are prepared by spurting a mixture of the polymeric and finely divided inorganic components in a solvent. The products have many fine, irregular voids. The thickness of walls forming such voids is 5.mu. or less. The products are especially useful for producing sheet-like structures therefrom by beating and/or refining them followed by general paper making procedures. The sheets, when calendered, have a high initial modulus and improved dimensional stability.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: March 27, 1979
    Assignee: Mitsubishi Rayon Company Limited
    Inventors: Masahiko Miyanoki, Takeshi Uotani, Fujio Itani, Toshi Yoshihara, Masayuki Igawa, Munehiro Okumura, Syoji Imao, Yoshiaki Taniyama