Patents by Inventor Ryoji Sugise
Ryoji Sugise 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).
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Patent number: 7714160Abstract: An alkyl nitrite is produced with high efficiency by bringing a nitrogen monoxide gas into contact with an aqueous solution of an alkyl alcohol and nitric acid in a reactor 2, which aqueous solution may be a liquid fraction generated in an alkyl nitrite-production process in which an alkyl alcohol is reacted with nitrogen monoxide and oxygen in a reaction column 1.Type: GrantFiled: September 21, 2004Date of Patent: May 11, 2010Assignee: Ube Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Hirofumi Ii, Kazuaki Mii
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Patent number: 6861563Abstract: In the process for producing a cyclododecanone by isomerizing an epoxycyclododecane-containing starting material in the presence of an isomerization reaction catalyst containing lithium bromide and/or lithium iodide, in order to perform the reaction with high efficiency (high reaction rate) and high selectivity and stably produce a high-purity cyclododecanone in industry while maintaining a high-level reaction rate, the epoxycyclododecane-containing starting material is produced by contacting an epoxycyclododecadiene with hydrogen in the presence of a hydrogen-reduction catalyst and has a content of the hydroxyl group-containing cyclododecane compounds contained in the epoxycyclododecane-containing starting material controlled to 5 mol % or less.Type: GrantFiled: August 9, 2002Date of Patent: March 1, 2005Assignees: Ube Industries, Ltd., EMS-Chemie AGInventors: Ryoji Sugise, Shuji Tanaka, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura
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Publication number: 20050038282Abstract: An alkyl nitrite is produced with high efficiency by bringing a nitrogen monoxide gas into contact with an aqueous solution of an alkyl alcohol and nitric acid in a reactor 2, which aqueous solution may be a liquid fraction generated in an alkyl nitrite-production process in which an alkyl alcohol is reacted with nitrogen monoxide and oxygen in a reaction column 1.Type: ApplicationFiled: September 21, 2004Publication date: February 17, 2005Inventors: Ryoji Sugise, Shuji Tanaka, Hirofumi Ii, Kazuaki Mii
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Patent number: 6844464Abstract: An alkyl nitrite is produced with high efficiency by bringing a nitrogen monoxide gas into contact with an aqueous solution of an alkyl alcohol and nitric acid in a reactor 2, which aqueous solution may be a liquid fraction generated in an alkyl nitrite-production process in which an alkyl alcohol is reacted with nitrogen monoxide and oxygen in a reaction column 1.Type: GrantFiled: March 13, 2003Date of Patent: January 18, 2005Assignee: Ube Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Hirofumi Ii, Kazuaki Mii
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Publication number: 20040181096Abstract: In the process for producing a cyclododecanone by isomerizing an epoxycyclododecane-containing starting material in the presence of an isomerization reaction catalyst containing lithium bromide and/or lithium iodide, in order to perform the reaction with high efficiency (high reaction rate) and high selectivity and stably produce a high-purity cyclododecanone in industry while maintaining a high-level reaction rate, the epoxycyclododecane-containing starting material is produced by contacting an epoxycyclododecadiene with hydrogen in the presence of a hydrogen-reduction catalyst and has a content of the hydroxyl group-containing cyclododecane compounds contained in the epoxycyclododecane-containing starting material controlled to 5 mol % or less.Type: ApplicationFiled: February 13, 2004Publication date: September 16, 2004Inventors: Ryoji Sugise, Shuji Tanaka, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura
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Publication number: 20030176724Abstract: An alkyl nitrite is produced with high efficiency by bringing a nitrogen monoxide gas into contact with an aqueous solution of an alkyl alcohol and nitric acid in a reactor 2, which aqueous solution may be a liquid fraction generated in an alkyl nitrite-production process in which an alkyl alcohol is reacted with nitrogen monoxide and oxygen in a reaction column 1.Type: ApplicationFiled: March 13, 2003Publication date: September 18, 2003Applicant: Ube Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Hirofumi Ii, Kazuaki Mii
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Patent number: 6518461Abstract: A cyclododecanone compound is continuously produced by an isomerization reaction of a corresponding epoxycyclododecane compound in the presence of a catalyst including lithium bromide and/or lithium iodide, the isomerization reaction being carried out by passing a reaction mixture containing the epoxycyclododecane compound and the catalyst through a continuous reaction apparatus including at least one tubular reactor preferably at a temperature of 100 to 350° C.Type: GrantFiled: October 19, 2001Date of Patent: February 11, 2003Assignee: UBE Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura
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Patent number: 6472498Abstract: A composition consisting essentially of a diaryl carbonate and contains a furan ring-containing compound in an amount of not more than 1 ppm is favorably employable for producing less colored polycarbonate.Type: GrantFiled: August 6, 2001Date of Patent: October 29, 2002Assignee: Ube Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Kohichi Kashiwagi, Takashi Doi, Hirofumi Ii, Masayuki Nishio, Shinichi Yoshida, Yutaka Asada, Kazuo Miyamoto
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Publication number: 20020099242Abstract: A cyclododecanone compound is continuously produced by feeding a liquid feed containing a corresponding epoxycyclododecane compound and LiBr and/or LiI into a frontmost reaction region of a plurality of reaction regions connected to each other in series; successively passing the liquid feed through the series of reaction regions to catalytically isomerize the epoxycyclododecane compound into a corresponding cyclododecanone compound; and collecting the resultant reaction mixture containing the target cyclododecanone compound from a rearmost reaction region of the series of reaction regions.Type: ApplicationFiled: June 13, 2001Publication date: July 25, 2002Applicant: Ube Industries, LtdInventors: Ryoji Sugise, Shuji Tanaka, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura
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Patent number: 6417404Abstract: A cyclododecanone compound is continuously produced by feeding a liquid feed containing a corresponding epoxycyclododecane compound and LiBr and/or LiI into a frontmost reaction region of a plurality of reaction regions connected to each other in series; successively passing the liquid feed through the series of reaction regions to catalytically isomerize the epoxycyclododecane compound into a corresponding cyclododecanone compound; and collecting the resultant reaction mixture containing the target cyclododecanone compound from a rearmost reaction region of the series of reaction regions.Type: GrantFiled: June 13, 2001Date of Patent: July 9, 2002Assignee: Ube Industries Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura
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Publication number: 20020077509Abstract: A cyclododecanone compound is continuously produced by an isomerization reaction of a corresponding epoxycyclododecane compound in the presence of a catalyst including lithium bromide and/or lithium iodide, the isomerization reaction being carried out by passing a reaction mixture containing the epoxycyclododecane compound and the catalyst through a continuous reaction apparatus including at least one tubular reactor preferably at a temperature of 100 to 350° C.Type: ApplicationFiled: October 19, 2001Publication date: June 20, 2002Applicant: Ube Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura
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Patent number: 6388140Abstract: A cyclododecanone compound is produced in a high reaction rate, with a high conversion of the starting compound, and with a high selectivity to and a high yield of the target compound by isomerizing an epoxycyclododecane compound in the presence of a catalyst comprising lithium bromide and/or lithium iodide, without using a solvent or in a non-polar solvent, in an inert gas atmosphere, while substantially no polymeric compounds having a high boiling temperature is produced.Type: GrantFiled: February 15, 2001Date of Patent: May 14, 2002Assignee: Ube Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Kohichi Kashiwagi, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura
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Publication number: 20020019512Abstract: A composition consisting essentially of a diaryl carbonate and contains a furan ring-containing compound in an amount of not more than 1 ppm is favorably employable for producing less colored polycarbonateType: ApplicationFiled: August 6, 2001Publication date: February 14, 2002Applicant: Ube Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Kohichi Kashiwagi, Takashi Doi, Hirofumi Ii, Masayuki Nishio, Shinichi Yoshida, Yutaka Asada, Kazuo Miyamoto
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Publication number: 20010023071Abstract: A cyclododecanone compound is produced in a high reaction rate, with a high conversion of the starting compound, and with a high selectivity to and a high yield of the target compound by isomerizing an epoxycyclododecane compound in the presence of a catalyst comprising lithium bromide and/or lithium iodide, without using a solvent or in a non-polar solvent, in an inert gas atmosphere, while substantially no polymeric compounds having a high boiling temperature is produced.Type: ApplicationFiled: February 15, 2001Publication date: September 20, 2001Applicant: Ube Industries, Ltd.Inventors: Ryoji Sugise, Shuji Tanaka, Kohichi Kashiwagi, Takashi Doi, Masayuki Nishio, Sadao Niida, Tsunao Matsuura
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Patent number: 6169209Abstract: An improved process for preparing an organic phosphonium chloride is performed by bringing an organic phosphonium bromide into contact with a chloride ion in a heterogeneous mixture solution of water and an organic solvent.Type: GrantFiled: November 23, 1998Date of Patent: January 2, 2001Assignee: Ube Industries, Ltd.Inventors: Katsumasa Harada, Ryoji Sugise, Koichi Kashiwagi, Sadao Niida
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Patent number: 6143917Abstract: A process for producing an aryl carbamate of a high purity at a high yield by reacting a diaryl carbonate with an amine compound having one or more hydrogen atoms bonded to the N position in the presence of carboxylic acid(s) of the following general formulae (I): R.sup.1 --COOH and/or (II): R.sup.2 --COOH (wherein R.sup.1 represents an alkyl or cycloalkyl group having an .alpha.-positioned carbon atom bonded to only one hydrogen atom, an alkyl group having an .alpha.-positioned carbon atom bonded to no hydrogen atom, or an aryl or heterocyclic group, and R.sup.2 represents an alkyl group having an .alpha.-positioned carbon atom bonded to two or more hydrogen atoms).Type: GrantFiled: October 13, 1998Date of Patent: November 7, 2000Assignee: Ube Industries, Ltd.Inventors: Katsumasa Harada, Ryoji Sugise, Kohichi Kashiwagi, Tsunao Matsuura
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Patent number: 5973184Abstract: A dialkyl carbonate (e.g., dimethyl carbonate) is prepared at a high yield and a high selectivity by decarbonylation of a dialkyl oxalate (e.g., dimethyl oxalate) in a gaseous phase in the presence of an alkali metal compound (e.g., potassium carbonate).Type: GrantFiled: November 9, 1998Date of Patent: October 26, 1999Assignee: Ube Industries, Ltd.Inventors: Katsumasa Harada, Ryoji Sugise, Masayuki Nishio, Toshio Kurafuji, Toshihiro Shimakawa
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Patent number: 5922827Abstract: A diaryl carbonate is produced by decarbonylating a diaryl oxalate, which can be prepared by transesterification of a dialkyl oxalate with a hydroxyaryl compound, in the presence of a catalyst, while removing the resultant carbon monoxide as a by-product, and then optionally refined by an evaporation and/or distillation, and then the resultant diaryl carbonate is condensation-polymerized with a polyhydroxyl compound, while recovering a resultant hydroxyaryl compound from the reaction system, to produce a polycarbonate.Type: GrantFiled: September 24, 1997Date of Patent: July 13, 1999Assignee: UBE Industries, Ltd.Inventors: Keigo Nishihira, Shuji Tanaka, Katsumasa Harada, Ryoji Sugise, Akinori Shiotani, Katsutoshi Washio
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Patent number: 5892091Abstract: A catalyst composed of an organic phosphorus compound having a trivalent or pentavalent phosphorus atom and at least one carbon-phosphorus bonding or a combination of the organic phosphorus compound and a halogen atom-containing compound is effective for decarbonylation, that is, for releasing carbon monoxide from a compound containing a moiety of --CO--CO--O-- in its molecular structure.Type: GrantFiled: July 8, 1997Date of Patent: April 6, 1999Assignee: Ube Industries, Ltd.Inventors: Katsumasa Harada, Yoichi Imbe, Keigo Nishihira, Shuji Tanaka, Satoru Fujitsu, Ryoji Sugise, Koichi Kashiwagi, Toshihiko Sumida, Takashi Doi, Masayuki Nishio
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Patent number: 5892089Abstract: A process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation is conducted by the steps of:1) performing a decarbonylation reaction of a diaryl oxalate in the presence of an organic phosphorus compound catalyst to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst;2) recovering the diaryl carbonate from the reaction mixture; and3) performing a decarbonylation reaction of a diaryl oxalate in the presence of the reaction mixture from which the diaryl carbonate has been recovered and to which a halogen atom-containing compound is added, to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst.Type: GrantFiled: October 6, 1997Date of Patent: April 6, 1999Assignee: Ube Industries, Ltd.Inventors: Katsumasa Harada, Ryoji Sugise, Koichi Kashiwagi, Yoichi Imbe, Takashi Doi, Keigo Nishihira, Shuji Tanaka, Hirofumi Ii