Patents by Inventor Masaru Nakahara
Masaru Nakahara 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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Publication number: 20240128824Abstract: A dynamo-electric machine comprising: a stator core with plurality of slots, a coil covered with insulated conductor wire, wherein the coil comprising plurality of storages stored in the slots and plurality of coil ends that are outside of the slots, conductor of coil end close to the conductor of the heterophase coil having insulating materials at only one of the surfaces, either the inner diameter surface close to the conductor of the heterophase coil or outer diameter surface of the heterophase coil.Type: ApplicationFiled: December 16, 2021Publication date: April 18, 2024Inventors: Kenji IKEDA, Yuji ENOMOTO, Hirooki TOKOI, Mizuki NAKAHARA, Hiroyuki MIKAMI, Toshifumi SUZUKI, Toru SAKAI, Masaru AMAIKE, Yuji TSUJI
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Publication number: 20240097508Abstract: A rotary electric machine (1000) including: a rotor (200); a stator (100) surrounding a periphery of the rotor (200); a first recessed portion (133) disposed in an inner circumferential surface of a back yoke (130) of the stator (100), and extending in an axial direction of the stator (100); and a tooth (120) having one end fitted in the first recessed portion (133), a clearance formed between the first recessed portion (133) and the one end of the tooth (120) fitted in the first recessed portion (133) being smaller in a circumferential direction of the stator (100) than in a radial direction of the stator (100).Type: ApplicationFiled: November 24, 2021Publication date: March 21, 2024Inventors: Hirooki TOKOI, Mizuki NAKAHARA, Toshifumi SUZUKI, Masaru AMAIKE, Shuuichi TAKAHASHI, Yasuei YONEOKA, Toru SAKAI
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Publication number: 20230061199Abstract: A method for producing carbon monoxide includes decomposing formic acid, in the presence of water, by hydrothermal reaction under conditions with a temperature T of 350° C. or less and a pressure P being equal to or more than the saturated vapor pressure of water at the temperature T.Type: ApplicationFiled: August 22, 2022Publication date: March 2, 2023Inventors: Yasuo Tsujino, Masaru Nakahara
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Publication number: 20140100388Abstract: A formic acid producing apparatus comprising a closed formic acid synthesis reaction section to which an ionic liquid, hydrogen, and carbon dioxide are introduced externally, and in which formic acid is synthesized.Type: ApplicationFiled: October 5, 2012Publication date: April 10, 2014Applicant: FORMIC ACID-HYDROGEN ENERGY DEVELOPMENT CORPORATIONInventor: Masaru NAKAHARA
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Patent number: 8519013Abstract: An object of the present invention is providing a method for producing formic acid under mild reaction conditions and by a simple procedure. As a means for achieving the object, the method for producing formic acid of the present invention is characterized by a reaction between carbon dioxide and hydrogen in the presence of an ionic liquid. According to the present invention, it is possible to generate formic acid effectively, because the method does not require that carbon dioxide be brought into a supercritical state and because no basic substances are required to be added to the reaction system.Type: GrantFiled: January 24, 2011Date of Patent: August 27, 2013Inventors: Masaru Nakahara, Nobuyuki Matsubayashi, Yoshiro Yasaka
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Patent number: 8449862Abstract: An object of the present invention is to provide a method for producing hydrogen by using formic acid as a feedstock, which provides a solution to problems to be solved for the production of hydrogen on an industrial scale, such as problems of production cost, storability and transportability, and also offers improved convenience. The method for producing hydrogen of the present invention is characterized by heating an ionic liquid containing formic acid. The ionic liquid is preferably an ionic liquid in which a counteranion is a formate anion (i.e., formic acid salt). Such an ionic liquid is, as a medium for the production of hydrogen from formic acid as a feedstock, excellent in terms of reaction selectivity (high-purity hydrogen is produced) and reaction velocity.Type: GrantFiled: July 28, 2009Date of Patent: May 28, 2013Assignee: Masaru NakaharaInventors: Masaru Nakahara, Nobuyuki Matsubayashi, Yoshiro Yasaka
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Publication number: 20130004800Abstract: A hydrogen generation system includes a hydrogen generation reaction section for containing a liquid mixture of formic acid and an ionic liquid, and decomposing the formic acid into hydrogen and carbon dioxide by heating; and a separation section for separating a mixture of hydrogen and carbon dioxide supplied from the hydrogen generation reaction section into hydrogen and carbon dioxide, wherein after the separation, the hydrogen is sent out of the separation section to an external hydrogen destination, and the carbon dioxide is sent out of the separation section to an external carbon dioxide destination or emitted into the atmosphere.Type: ApplicationFiled: June 27, 2012Publication date: January 3, 2013Applicant: FORMIC ACID-HYDROGEN ENERGY DEVELOPMENT CORPORATIONInventor: Masaru NAKAHARA
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Publication number: 20120295991Abstract: An object of the present invention is providing a method for producing formic acid under mild reaction conditions and by a simple procedure. As a means for achieving the object, the method for producing formic acid of the present invention is characterized by a reaction between carbon dioxide and hydrogen in the presence of an ionic liquid. According to the present invention, it is possible to generate formic acid effectively, because the method does not require that carbon dioxide be brought into a supercritical state and because no basic substances are required to be added to the reaction system.Type: ApplicationFiled: January 24, 2011Publication date: November 22, 2012Inventors: Masaru Nakahara, Nobuyuki Matsubayashi, Yoshiro Yasaka
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Publication number: 20110158899Abstract: An object of the present invention is to provide a method for producing hydrogen by using formic acid as a feedstock, which provides a solution to problems to be solved for the production of hydrogen on an industrial scale, such as problems of production cost, storability and transportability, and also offers improved convenience. The method for producing hydrogen of the present invention is characterized by heating an ionic liquid containing formic acid. The ionic liquid is preferably an ionic liquid in which a counteranion is a formate anion (i.e., formic acid salt). Such an ionic liquid is, as a medium for the production of hydrogen from formic acid as a feedstock, excellent in terms of reaction selectivity (high-purity hydrogen is produced) and reaction velocity.Type: ApplicationFiled: July 28, 2009Publication date: June 30, 2011Inventors: Masaru Nakahara, Nobuyuki Matsubayashi, Yoshiro Yasaka
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Patent number: 7345484Abstract: An NMR probe for high-temperature NMR measurements includes tubular heating means mounted respectively immediately below and immediately above an area to be measured. A sample tube is inserted inside the tube formed by the two heating means. A sample placed in the sample tube is heated. Heat from the two heating means is transmitted to the sample via at least one heat transfer pipe of a good thermal conductivity. The heat transfer pipe is disposed inside the tube of the heating means.Type: GrantFiled: August 27, 2004Date of Patent: March 18, 2008Assignees: Kyoto University, Jeol Ltd.Inventors: Masaru Nakahara, Nobuyuki Matsubayashi, Chihiro Wakai, Takeyoshi Ikeda
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Publication number: 20070257673Abstract: An NMR probe for high-temperature NMR measurements includes tubular heating means mounted respectively immediately below and immediately above an area to be measured. A sample tube is inserted inside the tube formed by the two heating means. A sample placed in the sample tube is heated. Heat from the two heating means is transmitted to the sample via at least one heat transfer pipe of a good thermal conductivity. The heat transfer pipe is disposed inside the tube of the heating means.Type: ApplicationFiled: August 27, 2004Publication date: November 8, 2007Applicants: KYOTO UNIVERSITY, JEOL LTD.Inventors: Masaru Nakahara, Nobuyuki Matsubayashi, Chihiro Wakai, Takeyoshi Ikeda
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Patent number: 6011764Abstract: An optical disk includes a user accessible area having a plurality of blocks and flag data recorded on the optical disk. The flag data indicates whether or not each of the blocks is in an erased state in which there is no recorded data. A flag area stores the flag data, and area data indicating that the optical disk has the flag area is recorded on the optical disk.Type: GrantFiled: March 4, 1998Date of Patent: January 4, 2000Assignee: Fujitsu LimitedInventors: Satoshi Itami, Masaru Nakahara, Masahiro Nakada, Hiroshi Suzuki, Kenichi Utsumi
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Patent number: 5982886Abstract: In a method for preventing unauthorized use of a recording medium having a user accessible area and a user inaccessible area, first information is read from the user inaccessible area of the recording medium. The first information is compared with second information concerning a true recording medium (lawfully produced copy). It is then concluded that the recording medium is the true recording medium when the first information corresponds to the second information.Type: GrantFiled: October 11, 1996Date of Patent: November 9, 1999Assignee: Fujitsu LimitedInventors: Satoshi Itami, Kenichi Utsumi, Masahiro Nakada, Hiroshi Suzuki, Kazunori Naito, Kazuo Nakashima, Toshikatsu Narumi, Masaru Nakahara
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Patent number: 5875247Abstract: A CD-ROM stores encrypted software. When a user desires to decrypt and install this software, an approval preparatory key is generated by an installer. This approval preparatory key is generated based on time data. When the user informs a center of this approval preparatory key, the center calculates a difference between this approval preparatory key and a decrypting key and vends this calculated result to a user in the form of an approval key. When the user inputs this approval key to an installer, the installer generates a decrypting key by adding the approval preparatory key to the approval key. The installer decrypts the software by this decrypting key and installs the encrypted software into a personal computer system.Type: GrantFiled: August 1, 1995Date of Patent: February 23, 1999Assignee: Fujitsu LimitedInventors: Kazuo Nakashima, Masaru Nakahara, Satoshi Itami, Kenichi Utsumi
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Patent number: 5777965Abstract: An optical disk includes a user accessible area having a plurality of blocks and flag data recorded on the optical disk. The flag data indicates whether or not each of the blocks is in an erased state in which there is no recorded data. A flag area stores the flag data, and area data indicating that the optical disk has the flag area is recorded on the optical disk.Type: GrantFiled: July 18, 1996Date of Patent: July 7, 1998Assignee: Fujitsu LimitedInventors: Satoshi Itami, Masaru Nakahara, Masahiro Nakada, Hiroshi Suzuki, Kenichi Utsumi
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Patent number: 5752009Abstract: An optical disk is divided into a plurality of sections at least one of which (a first section) is made a section (formatted in MS-DOS, for example) having a format different from the logical format of a CD-ROM. Publication data is optically recorded in at least one section (a second section) of the sections other than the first section in accordance with the CD-ROM logical format. A CD-ROM utilization tool that utilizes publication data in the CD-ROM logical format and a CD-ROM emulator for converting a request for access to the CD-ROM logical section issued by the CD-ROM utilization tool to a request for access to the optical disk are recorded in the first section.Type: GrantFiled: December 2, 1996Date of Patent: May 12, 1998Assignee: Fujitsu LimitedInventors: Masaru Nakahara, Kazuo Nakashima, Kenichi Utsumi
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Patent number: 5733984Abstract: A process for the preparation of a deuterated compound, which requires neither many steps nor an expensive reagent, and is considerably economical and can be widely used for general-purposes because raw materials which can be used therein are not particularly limited. Specifically, a deuterated compound is obtained by a process comprising treating an organic compound (an aliphatic or alicyclic compound, an aromatic hydrocarbon or a polymer compound such as rubbers and proteins) in heavy water under high-temperature and high-pressure conditions not less than the subcritical temperature and the subcritical pressure.Type: GrantFiled: November 20, 1996Date of Patent: March 31, 1998Assignees: Masaru Nakahara, Heiji Enomoto, Atsushi Kishita, Nishikawa Rubber Co., Ltd.Inventors: Masaru Nakahara, Heiji Enomoto, Atsushi Kishita, Kenji Tsuda, Toshinari Tennoh, Emi Fujita
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Patent number: 5617393Abstract: An optical disk includes a user accessible area having a plurality of blocks and flag data recorded on the optical disk. The flag data indicates whether or not each of the blocks is in an erased state in which there is no recorded data. A flag area stores the flag data, and area data indicating that the optical disk has the flag area is recorded on the optical disk.Type: GrantFiled: December 28, 1994Date of Patent: April 1, 1997Assignee: Fujitsu LimitedInventors: Satoshi Itami, Masaru Nakahara, Masahiro Nakada, Hiroshi Suzuki, Kenichi Utsumi
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Patent number: 5418852Abstract: In a method for preventing unauthorized use of a recording medium having a user accessible area and a user inaccessible area, first information is read from the user inaccessible area of the recording medium. The first information is compared with second information concerning a true recording medium (lawfully produced copy). It is then concluded that the recording medium is the true recording medium when the first information corresponds to the second information.Type: GrantFiled: March 17, 1993Date of Patent: May 23, 1995Assignee: Fujitsu LimitedInventors: Satoshi Itami, Kenichi Utsumi, Masahiro Nakada, Hiroshi Suzuki, Kazunori Naito, Kazuo Nakashima, Toshikatsu Narumi, Masaru Nakahara
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Patent number: 5357431Abstract: A character string retrieval system retrieves a character string corresponding to a retrieval key input thereto from a text file including a plurality of characters.Type: GrantFiled: January 25, 1993Date of Patent: October 18, 1994Assignee: Fujitsu LimitedInventors: Masahiro Nakada, Kenichi Utsumi, Takashi Tsubokura, Masaru Nakahara, Satoshi Itami, Hiroshi Suzuki, Kyouko Miyabe, Satoshi Komura