Patents by Inventor Naomoto Ishikawa
Naomoto Ishikawa 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: 20160263797Abstract: The present invention effects a reduction in production cost and increases yield of a transparent resin molded article and prevents the generation of defects such as bubbles, weld lines, and sink marks. This injection molding device (2A) for a transparent resin molded article is equipped with: a die (3) for injection molding the transparent resin molded article; and a gate (5) that is provided to the peripheral edge of the die (3) and that is the inlet through which a resin material (R) is injected into the die (3). The thickness dimensions (Ta) of the die (3) are in the range of 15-25 mm, and the ratio of the diameter dimensions (D) of the gate (5) to the thickness dimensions (Ta) of the die (3) is set in the range of 1:6 to 1:3.Type: ApplicationFiled: August 20, 2014Publication date: September 15, 2016Inventors: Masahiro BESSHO, Naomoto ISHIKAWA, Tsunetoshi TANEMURA
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Patent number: 9334065Abstract: There are provided a lightning-resistant fastener and a cap, which, while assuring sufficient insulation properties, provide improved workability and highly stable quality to thereby enable a reduction in the manufacturing cost of an airframe, and a method of mounting the lightning-resistant fastener. A hole 32 is formed in a cap 30, and a screw groove 32a is formed in the hole 32. The configuration enables the cap 30 to be reliably and easily positioned and installed on a fastener member 24 and reliably prevents the cap 30 from coming off after the installation thereof. This improves the workability to reduce the production cost while assuring sufficient insulation properties and enables the cap 30 to be installed with stable quality irrespective of workers. Preferably, the cap 30 is made of a resin in view of mass producibility, weight reduction, and the like.Type: GrantFiled: July 11, 2013Date of Patent: May 10, 2016Assignee: MITSUBISHI AIRCRAFT CORPORATIONInventors: Masahiro Bessho, Wataru Nihimura, Naomoto Ishikawa, Yuichiro Kamino, Toshikatsu Nohara, Toru Hashigami, Tamaki Tsuzuki
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Publication number: 20150344151Abstract: There are provided a lightning-resistant fastener and a cap, which, while assuring sufficient insulation properties, provide improved workability and highly stable quality to thereby enable a reduction in the manufacturing cost of an airframe, and a method of mounting the lightning-resistant fastener. A hole 32 is formed in a cap 30, and a screw groove 32a is formed in the hole 32. The configuration enables the cap 30 to be reliably and easily positioned and installed on a fastener member 24 and reliably prevents the cap 30 from coming off after the installation thereof. This improves the workability to reduce the production cost while assuring sufficient insulation properties and enables the cap 30 to be installed with stable quality irrespective of workers. Preferably, the cap 30 is made of a resin in view of mass producibility, weight reduction, and the like.Type: ApplicationFiled: July 11, 2013Publication date: December 3, 2015Inventors: Masahiro Bessho, Wataru Nihimura, Naomoto Ishikawa, Yuichiro Kamino, Toshikatsu Nohara, Toru Hashigami, Tamaki Tsuzuki
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Patent number: 8651413Abstract: A lightning-protection fastener is provided that is capable of reliably preventing peeling off of an insulation layer during the operation of an aircraft and improving the anti-lightning-strike capability and reliability. There is a lightning-protection fastener that fastens a skin of an aircraft and a structural member positioned inside the skin, in which an insulation layer is melt adhered so as to cover one end surface of a head portion and also to mechanically engage with a fastener-side engagement portion (engagement portion) formed on the end surface.Type: GrantFiled: September 25, 2008Date of Patent: February 18, 2014Assignee: Mitsubishi Heavy IndustriesInventors: Masahiro Kashiwagi, Yuichiro Kamino, Kazuyuki Oguri, Takeyasu Tarumi, Masahiro Bessho, Hideo Yamakoshi, Naomoto Ishikawa
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Publication number: 20130223951Abstract: A cap (9) that is used in a fixing structure (1) for fixing a plurality of overlaid structural members (3) by means of a fastener (5) inserted into through-holes (3a) formed in the overlaid structural members and a collar (7) fastened onto a distal end (5a) of the fastener protruding from a surface of the structural members and that is disposed so as to surround the distal end of the fastener and the collar. The cap is attached, in a non-engaged state, to the distal end of the fastener and the collar, and a concave groove (9d) that accommodates a sealant (11) to be filled in a space formed between an inner peripheral surface (9e) and the surface of the structural members is formed in the inner peripheral surface.Type: ApplicationFiled: April 20, 2012Publication date: August 29, 2013Inventors: Masahiro Bessho, Takamitsu Himeno, Yasunori Watanabe, Hideo Yamakoshi, Soichiro Umemoto, Wataru Nishimura, Yuichiro Kamino, Naomoto Ishikawa, Nobuyuki Kamihara, Fumitoshi Moriya, Yoshiro Aoshima, Toru Takasu
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Patent number: 8520358Abstract: There are provided a lightning-resistant fastener and a cap, which, while assuring sufficient insulation properties, provide improved workability and highly stable quality to thereby enable a reduction in the manufacturing cost of an airframe, and a method of mounting the lightning-resistant fastener. A hole 32 is formed in a cap 30, and a screw groove 32a is formed in the hole 32. The configuration enables the cap 30 to be reliably and easily positioned and installed on a fastener member 24 and reliably prevents the cap 30 from coming off after the installation thereof. This improves the workability to reduce the production cost while assuring sufficient insulation properties and enables the cap 30 to be installed with stable quality irrespective of workers. Preferably, the cap 30 is made of a resin in view of mass producibility, weight reduction, and the like.Type: GrantFiled: April 2, 2010Date of Patent: August 27, 2013Assignee: Mitbushi Aircraft CorporationInventors: Masahiro Bessho, Wataru Nishimura, Naomoto Ishikawa, Yuichiro Kamino, Toshikatsu Nohara, Toru Hashigami, Tamaki Tsuzuki
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Patent number: 8451577Abstract: A lightning-resistant fastener, a cap, a fastener member, and a method for attaching the lightning-resistant fastener are provided, which enhance workability and quality stability besides reliably securing an insulating property, and can lead to enhancement in safety of an airframe and reduction in manufacturing cost. A head portion 25b of a fastener main body 25 includes a head cap 50, and a shaft portion 25s of the fastener main body 25 includes a shaft cap 30, whereby a direct strike of lightning to a fastener member 24, and occurrence of an arc discharge from the fastener member 24 in the case of a lightning strike can be suppressed. A hole 52 is formed in the head cap 50, and a thread groove 52a is formed in the hole 52, whereby the head cap 50 can be reliably and easily positioned and attached to the fastener member 24.Type: GrantFiled: November 5, 2010Date of Patent: May 28, 2013Assignee: Mitsubishi Aircraft CorporationInventors: Masahiro Bessho, Wataru Nishimura, Naomoto Ishikawa, Yuichiro Kamino, Toshikatsu Nohara, Toru Hashigami, Tamaki Tsuzuki
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Publication number: 20120074257Abstract: There are provided a lightning-resistant fastener and a cap, which, while assuring sufficient insulation properties, provide improved workability and highly stable quality to thereby enable a reduction in the manufacturing cost of an airframe, and a method of mounting the lightning-resistant fastener. A hole 32 is formed in a cap 30, and a screw groove 32a is formed in the hole 32. The configuration enables the cap 30 to be reliably and easily positioned and installed on a fastener member 24 and reliably prevents the cap 30 from coming off after the installation thereof. This improves the workability to reduce the production cost while assuring sufficient insulation properties and enables the cap 30 to be installed with stable quality irrespective of workers. Preferably, the cap 30 is made of a resin in view of mass producibility, weight reduction, and the like.Type: ApplicationFiled: April 2, 2010Publication date: March 29, 2012Applicant: MITSUBISHI AIRCRAFT CORPORATIONInventors: Masahiro Bessho, Wataru Nishimura, Naomoto Ishikawa, Yuichiro Kamino, Toshikatsu Nohara, Toru Hashigami, Tamaki Tsuzuki
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Publication number: 20110226896Abstract: A lightning-resistant fastener, a cap, a fastener member, and a method for attaching the lightning-resistant fastener are provided, which enhance workability and quality stability besides reliably securing an insulating property, and can lead to enhancement in safety of an airframe and reduction in manufacturing cost. A head portion 25b of a fastener main body 25 includes a head cap 50, and a shaft portion 25s of the fastener main body 25 includes a shaft cap 30, whereby a direct strike of lightning to a fastener member 24, and occurrence of an arc discharge from the fastener member 24 in the case of a lightning strike can be suppressed. A hole 52 is formed in the head cap 50, and a thread groove 52a is formed in the hole 52, whereby the head cap 50 can be reliably and easily positioned and attached to the fastener member 24.Type: ApplicationFiled: November 5, 2010Publication date: September 22, 2011Applicant: MITSUBISHI AIRCRAFT CORPORATIONInventors: Masahiro BESSHO, Wataru NISHIMURA, Naomoto ISHIKAWA, Yuichiro KAMINO, Toshikatsu NOHARA, Toru HASHIGAMI, Tamaki Tsuzuki
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Publication number: 20100320315Abstract: Provided is a lightning-protection fastener that is capable of reliably preventing peeling off of an insulation layer during the operation of an aircraft and of improving the anti-lightning-strike capability and reliability. There is a lightning-protection fastener that fastens a skin of an aircraft and a structural member positioned inside the skin, in which an insulation layer is melt adhered so as to cover one end surface of a head portion and also to mechanically engage with a fastener-side engagement portion (engagement portion) formed on the end surface.Type: ApplicationFiled: September 25, 2008Publication date: December 23, 2010Inventors: Masahiro Kashiwagi, Yuichiro Kamino, Kazuyuki Oguri, Takeyasu Tarumi, Masahiro Bessho, Hideo Yamakoshi, Naomoto Ishikawa
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Patent number: 7625850Abstract: A high-temperature lubricating oil composition is provided, which is resistant to hardening and sludge formation, and displays minimal evaporation loss and superior thermal stability, even under practical high-temperature open system conditions such as those found in a tenter. A lubricating oil composition that provides excellent lubrication without damaging members used within working machinery is also provided. The lubricating oil composition comprises a polyolester based synthetic oil and a C12 to C72 fatty acid and/or a diphenylamine derivative containing an arylalkyl group with a number average molecular weight of 400 to 800.Type: GrantFiled: March 24, 2005Date of Patent: December 1, 2009Assignees: Mitsubishi Heavy Industries, Ltd., Sato Special Oil Co., Ltd.Inventors: Norihisa Horaguchi, Shiki Matsuo, Hideo Kometani, Naomoto Ishikawa, Tatsushi Seko, Yusuke Kinoshita, Masaru Seto, Kimihito Hitotsumatsu
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Publication number: 20050222000Abstract: A high-temperature lubricating oil composition is provided, which is resistant to hardening and sludge formation, and displays minimal evaporation loss and superior thermal stability, even under practical high-temperature open system conditions such as those found in a tenter. A lubricating oil composition that provides excellent lubrication without damaging members used within working machinery is also provided. The lubricating oil composition comprises a polyolester based synthetic oil and a C12 to C72 fatty acid and/or a diphenylamine derivative containing an arylalkyl group with a number average molecular weight of 400 to 800.Type: ApplicationFiled: March 24, 2005Publication date: October 6, 2005Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., SATO SPECIAL OIL CO., LTD.Inventors: Norihisa Horaguchi, Shiki Matsuo, Hideo Kometani, Naomoto Ishikawa, Tatsushi Seko, Yusuke Kinoshita, Masaru Seto, Kimihito Hitotsumatsu
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Patent number: 5914385Abstract: An addition type polyimide resin raw material composition having high heat resistance and high corrosion resistance comprising a tetracarboxylic anhydride and/or tetracarboxylic diester compound, diamine compound and exo-3,6-epoxy-1,2,3,6-tetrahydrophthalic anhydride and/or exo-3,6-epoxy-1,2,3,6-tetrahydrophthalic monoester compound; a composition containing a prepreg; a fiber-reinforced polyimide composite prepreg, coating material and paint using them; and a curing method thereof.Type: GrantFiled: December 4, 1996Date of Patent: June 22, 1999Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Noriya Hayashi, Naomoto Ishikawa, Yukihiro Sakaguchi, Shunichi Hayashi, Hitoshi Noda