Patents by Inventor Mamoru Mizumoto
Mamoru Mizumoto 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: 7776277Abstract: A polymerization method comprises, prior to polymerization of a monomer of the cyclic dimer of alpha-hydroxycarboxylic acid, a first mixture of a polymerization catalyst by bypassing a part of the monomer of the cyclic dimer is prepared. Then, the first mixture is mixed with a dominant amount of the monomer introduced into a polymerization reactor. The monomer of the cyclic dimer in the polymerization reactor is conducted in the presence of a polymerization initiator.Type: GrantFiled: July 13, 2007Date of Patent: August 17, 2010Assignee: Hitachi Plant Technologies, Ltd.Inventors: Mamoru Mizumoto, Toshiaki Matsuo, Takayuki Matsumoto, Naruyasu Okamoto, Ryuuji Kajiya
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Patent number: 7521524Abstract: A polymerization method comprises, prior to polymerization of a monomer of the cyclic dimer of alpha-hydroxycarboxylic acid, a first mixture of a polymerization catalyst by bypassing a part of the monomer of the cyclic dimer is prepared. Then, the first mixture is mixed with a dominant amount of the monomer introduced into a polymerization reactor. The monomer of the cyclic dimer in the polymerization reactor is conducted in the presence of a polymerization initiator.Type: GrantFiled: March 4, 2005Date of Patent: April 21, 2009Assignee: Hitachi, Ltd.Inventors: Mamoru Mizumoto, Toshiaki Matsuo, Takayuki Matsumoto, Naruyasu Okamoto, Ryuuji Kajiya
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Publication number: 20080159921Abstract: A polymerization method comprises, prior to polymerization of a monomer of the cyclic dimer of alpha-hydroxycarboxylic acid, a first mixture of a polymerization catalyst by bypassing a part of the monomer of the cyclic dimer is prepared. Then, the first mixture is mixed with a dominant amount of the monomer introduced into a polymerization reactor. The monomer of the cyclic dimer in the polymerization reactor is conducted in the presence of a polymerization initiator.Type: ApplicationFiled: July 13, 2007Publication date: July 3, 2008Inventors: Mamoru Mizumoto, Toshiaki Matsuo, Takayuki Matsumoto, Naruyasu Okamoto, Ryuuji Kajiya
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Publication number: 20050203271Abstract: A polymerization method comprises, prior to polymerization of a monomer of the cyclic dimer of alpha-hydroxycarboxylic acid, a first mixture of a polymerization catalyst by bypassing a part of the monomer of the cyclic dimer is prepared. Then, the first mixture is mixed with a dominant amount of the monomer introduced into a polymerization reactor. The monomer of the cyclic dimer in the polymerization reactor is conducted in the presence of a polymerization initiator.Type: ApplicationFiled: March 4, 2005Publication date: September 15, 2005Inventors: Mamoru Mizumoto, Toshiaki Matsuo, Takayuki Matsumoto, Naruyasu Okamoto, Ryuuji Kajiya
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Publication number: 20040169139Abstract: There was previously no monitoring method and monitoring apparatus which could measure dioxins at ppt levels and dioxin precursors at ppb levels with high sensitivity.Type: ApplicationFiled: March 10, 2004Publication date: September 2, 2004Applicant: Hitachi, Ltd.Inventors: Minoru Sakairi, Yoshiaki Kato, Mamoru Mizumoto, Yuichiro Hashimoto, Jiro Tokita, Masao Suga
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Patent number: 6723286Abstract: There was previously no monitoring method and monitoring apparatus which could measure dioxins at ppt levels and dioxin precursors at ppb levels with high sensitivity. According to this invention, organic and inorganic compounds containing highly electronegative elements are selectively ionized by atmospheric pressure chemical ionization, the ions produced are detected by a mass spectrometer, and their amount is measured. As a result, interfering substances such as nitrogen, air, hydrocarbons and carbon dioxide which are the main components of flue gas are eliminated, and dioxins or organochlorine compounds such as dioxin precursors can be selectively monitored.Type: GrantFiled: November 13, 2001Date of Patent: April 20, 2004Assignee: Hitachi, Ltd.Inventors: Minoru Sakairi, Yoshiaki Kato, Mamoru Mizumoto, Yuichiro Hashimoto, Jiro Tokita, Masao Suga
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Publication number: 20020110490Abstract: There was previously no monitoring method and monitoring apparatus which could measure dioxins at ppt levels and dioxin precursors at ppb levels with high sensitivity.Type: ApplicationFiled: April 11, 2002Publication date: August 15, 2002Applicant: Hitachi, Ltd.Inventors: Minoru Sakairi, Yoshiaki Kato, Mamoru Mizumoto, Yuichiro Hashimoto, Jiro Tokita, Masao Suga
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Publication number: 20020048818Abstract: There was previously no monitoring method and monitoring apparatus which could measure dioxins at ppt levels and dioxin precursors at ppb levels with high sensitivity.Type: ApplicationFiled: November 13, 2001Publication date: April 25, 2002Applicant: Hitachi, Ltd.Inventors: Minoru Sakairi, Yoshiaki Kato, Mamoru Mizumoto, Yuichiro Hashimoto, Jiro Tokita, Masao Suga
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Patent number: 5879829Abstract: A treating fluid is in contact with a negative electrode containing lithium of a lithium cell under a first condition to react a surface portion of the negative electrode, and a treating fluid is in contact with lithium existing inside an article formed on the surface of the above-described negative electrode under a second condition. The cells can be effectively treated under safety condition to collect either the valuable substances, or the cell constructive components.Type: GrantFiled: October 17, 1997Date of Patent: March 9, 1999Assignee: Hitachi, Ltd.Inventors: Katsunori Nishimura, Hidetoshi Honbo, Akihiro Gotoh, Mamoru Mizumoto, Tatsuo Horiba
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Patent number: 5714129Abstract: A treating fluid is in contact with a negative electrode containing lithium of a lithium cell under a first condition to react a surface portion of the negative electrode, and a treating fluid is in contact with lithium existing inside an article formed on the surface of the above-described negative electrode under a second condition. The cells can be effectively treated under safety condition to collect either the valuable substances, or the cell constructive components.Type: GrantFiled: July 12, 1996Date of Patent: February 3, 1998Assignee: Hitachi, Ltd.Inventors: Katsunori Nishimura, Hidetoshi Honbo, Akihiro Gotoh, Mamoru Mizumoto, Tatsuo Horiba
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Patent number: 5679477Abstract: A safe and controllable method of treating a secondary battery having at least one component containing alkali metal, comprises the steps of opening the battery casing, and introducing a gas containing at least one of water vapor and alcohol vapor into a closed chamber containing the battery thereby to form alkali metal hydroxide. To control hydrogen concentration, the rate of introduction of water and/or alcohol vapor may be varied. Apparatus for carrying out this method is also described.Type: GrantFiled: November 20, 1996Date of Patent: October 21, 1997Assignee: Hitachi, Ltd.Inventors: Katsunori Nishimura, Hidetoshi Honbo, Akihiro Gotoh, Mamoru Mizumoto, Tatsuo Horiba
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Patent number: 5628973Abstract: A treating fluid is in contact with a negative electrode containing lithium of a lithium cell under a first condition to react a surface portion of the negative electrode, and a treating fluid is in contact with lithium existing inside an article formed on the surface of the above-described negative electrode under a second condition. The cells can be effectively treated under safety condition to collect either the valuable substances, or the cell constructive components.Type: GrantFiled: March 30, 1994Date of Patent: May 13, 1997Assignee: Hitachi, Ltd.Inventors: Katsunori Nishimura, Hidetoshi Honbo, Akihiro Gotoh, Mamoru Mizumoto, Tatsuo Horiba
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Patent number: 5612150Abstract: A safe and controllable method of treating a secondary battery having at least one component containing alkali metal, comprises the steps of opening the battery casing, and introducing a gas containing at least one of water vapor and alcohol vapor into a closed chamber containing the battery thereby to form alkali metal hydroxide. To control hydrogen concentration, the rate of introduction of water and/or alcohol vapor may be varied. Apparatus for carrying out this method is also described.Type: GrantFiled: March 10, 1995Date of Patent: March 18, 1997Assignee: Hitachi, Ltd.Inventors: Katsunori Nishimura, Hidetoshi Honbo, Akihiro Gotoh, Mamoru Mizumoto, Tatsuo Horiba
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Patent number: 5597526Abstract: A treating fluid is in contact with a negative electrode containing lithium of a lithium cell under a first condition to react a surface portion of the negative electrode, and a treating fluid is in contact with lithium existing inside an article formed on the surface of the above-described negative electrode under a second condition. The cells can be effectively treated under safety condition to collect either the valuable substances, or the cell constructive components.Type: GrantFiled: April 21, 1995Date of Patent: January 28, 1997Assignee: Hitachi, Ltd.Inventors: Katsunori Nishimura, Hidetoshi Honbo, Akihiro Gotoh, Mamoru Mizumoto, Tatsuo Horiba
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Patent number: 5541022Abstract: A composite anode includes particles of an alkali metal alloy, a carbonaceous material powder and a binder and used for nonaqueous secondary batteries in which an alkali metal is used as an anode active material and a solution of an electrolyte in an organic solvent is used as an electrolyte solution, wherein the carbonaceous material powder contains oxygen atoms and the oxygen content is in the range of 1 to 5% by weight. A method for producing this composite anode includes the steps of mixing a solution of a binder comprising a copolymer of monomers mainly composed of olefins in an aromatic solvent with the alkali metal alloy particles and the carbonaceous material powder, coating the mixture on an electrode substrate and molding the coated substrate.Type: GrantFiled: November 22, 1994Date of Patent: July 30, 1996Assignee: Hitachi, Ltd.Inventors: Mamoru Mizumoto, Hidetoshi Honbo, Tatsuo Horiba
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Patent number: 5537390Abstract: A secondary battery control device includes a secondary battery section, a current converting section for converting current inputted or outputted to the secondary battery section from direct current to alternating current or vice versa, and a charge and discharge control section for controlling an input and an output as monitoring the state of the secondary battery section. The secondary battery control device is characterized in that the secondary battery section is arranged to have a main battery, an auxiliary battery connected in parallel to the main battery, an operating section for operating a residual capacity of the main battery by detecting a voltage of the auxiliary battery, and an indicator for indicating the residual capacity outputted from the operating section.Type: GrantFiled: August 24, 1993Date of Patent: July 16, 1996Assignee: Hitachi, Ltd.Inventors: Tatsuo Horiba, Kyoko Ikawa, Mamoru Mizumoto
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Patent number: 4906176Abstract: The disclosure is concerned with a high temperature stable catalyst comprising an alumina base support and a catalytically active component supported on the support. The support is featured by its specific composite oxide having a specific surface area of at least 10 m.sup.2 /g and a structural form of amorphous state or a phase resemble to lanthanoide .beta.-alumina. The composite oxide can be converted to lanthanoide .beta.-alumina when heated to an elevated temperature above 1000.degree. C. within 2 hours. The composite oxide is substantially free from such ingredients as accelerate grain growth of alumina. The ingredients are for example Cr, Sr or Ce.The present dislcosure is also concerned with a process for preparing the catalyst and a process for conducting chemical reactions such as steam reforming, desulfurization of heavy oil, cracking of hydrocarbons, etc. using the catalyst.Type: GrantFiled: December 18, 1987Date of Patent: March 6, 1990Assignee: Hitachi, Ltd.Inventors: Hisao Yamashita, Akira Kato, Shigeo Uno, Mamoru Mizumoto, Shinpei Matsuda
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Patent number: 4738946Abstract: The disclosure is concerned with a high temperature stable catalyst comprising an alumina base support and a catalytically active component supported on the support. The support is featured by its specific composite oxide having a specific surface area of at least 10 m.sup.2 /g and a structural form of amorphous state or a phase resemble to lanthanoide .beta.-alumina. The composite oxide can be converted to lanthanoide .beta.-alumina when heated to an elevated temperature above 1000.degree. C. within 2 hours. The composite oxide is substantially free from such ingredients as accelerate grain growth of alumina. The ingredients are for example Cr, Sr or Ce.The present disclosure is also concerned with a process for preparing the catalyst and a process for conducting chemical reactions such as steam reforming, desulfurization of heavy oil, cracking of hydrocarbons, etc. using the catalyst.Type: GrantFiled: May 28, 1986Date of Patent: April 19, 1988Assignee: Hitachi, Ltd.Inventors: Hisao Yamashita, Akira Kato, Shigeo Uno, Mamoru Mizumoto, Shinpei Matsuda
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Patent number: 4636335Abstract: A method for processing spent radioactive ion exchange resin formed in a nuclear power plant by a two-step pyrolysis method. First, the spent resin is heated at 350.degree. C. to decompose functional groups selectively. Then the base polymer, formed as residue, is decomposed at a temperature above 350.degree. C., e.g. 600.degree. C. After the thermal decomposition, exhaust gases which require a special exhaust gas disposal means, such as NO.sub.x and SO.sub.x can be reduce to below 1/20.Type: GrantFiled: December 7, 1983Date of Patent: January 13, 1987Assignee: Hitachi, Ltd.Inventors: Fumio Kawamura, Masami Matsuda, Yoshiyuki Aoyama, Koichi Chino, Mamoru Mizumoto
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Patent number: 4631263Abstract: A catalyst for gas/liquid reactions, characterized by having a sheet or film-form water-repellent porous carrier having gas permeability and liquid impermeability and a catalytically active component supported on at least one surface of said carrier.Type: GrantFiled: October 15, 1985Date of Patent: December 23, 1986Assignee: Hitachi, Ltd.Inventors: Mamoru Mizumoto, Hisao Yamashita, Shinpei Matsuda, Kazuhiko Yamaguchi