Patents by Inventor Kenichi Hayakawa
Kenichi Hayakawa 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: 11047292Abstract: An ignition device configured to ignite a fuel included in an air-fuel mixture supplied to a main combustion chamber of an internal combustion engine. The ignition device includes a partition member that forms a precombustion chamber that encloses an ignition point of a fuel. The partition member has a plurality of communicating holes communicating between the main combustion chamber and the precombustion chamber. The ignition device further includes a first interference member that protrudes inward from an inner surface of the partition member.Type: GrantFiled: January 22, 2019Date of Patent: June 29, 2021Assignee: Ricoh Company, Ltd.Inventors: Kenichi Hayakawa, Kentaroh Hagita, Naoto Jikutani, Toshiyuki Ikeoh
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Patent number: 10619039Abstract: A polypropylene resin composition including 100 parts by weight of basic components including a polypropylene resin (A) with a propylene polymer, the propylene polymer having a MFR of 10 to 300 g/10 min and containing 98 mol % or more of structural units derived from propylene, an ethylene.?-olefin copolymer (B) having an ethylene content of 65 to 90 mol %, and optionally an inorganic filler (E); 0.2 to 1 part by weight of a fatty acid amide (C); and 0.2 to 1 part by weight of a surfactant (D).Type: GrantFiled: September 17, 2013Date of Patent: April 14, 2020Assignees: PRIME POLYMER CO., LTD., HONDA MOTOR CO., LTD.Inventors: Yusuke Fukuda, Kenichi Hayakawa, Yoshinobu Hatano
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Publication number: 20190226387Abstract: An ignition device configured to ignite a fuel included in an air-fuel mixture supplied to a main combustion chamber of an internal combustion engine. The ignition device includes a partition member that forms a precombustion chamber that encloses an ignition point of a fuel. The partition member has a plurality of communicating holes communicating between the main combustion chamber and the precombustion chamber. The ignition device further includes a first interference member that protrudes inward from an inner surface of the partition member.Type: ApplicationFiled: January 22, 2019Publication date: July 25, 2019Applicant: Ricoh Company, Ltd.Inventors: Kenichi HAYAKAWA, Kentaroh HAGITA, Naoto JIKUTANI, Toshiyuki IKEOH
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Patent number: 10087093Abstract: A fluid treatment apparatus for treating a target fluid is provided. The fluid treatment apparatus includes a cylindrical reactor and one or more catalyst members each having a rod-like or plate-like shape extending in a longitudinal direction within the reactor. The cylindrical reactor decomposes an organic substance contained in a mixed fluid of the target fluid with an oxidant by an oxidation reaction under heat and pressure. The cylindrical reactor has an introduction port on one end and a discharge port on the other end. An upstream end surface, relative to a direction of flow of the target fluid, of each of the catalyst members is located in a downstream vicinity of or upstream from an inflow position where the target fluid flows into the reactor through the introduction port. Each of the catalyst members is suspended with the upstream end surface being fixed.Type: GrantFiled: June 4, 2015Date of Patent: October 2, 2018Assignee: Ricoh Company, Ltd.Inventors: Toshiyuki Mutoh, Shogo Suzuki, Yuu Zama, Aya Utsuki, Kimio Aoki, Hideyuki Miyazawa, Makito Nakashima, Kenichi Hayakawa, Shigeru Yamada
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Publication number: 20160290685Abstract: A heat storage and release unit includes a reactant formed body for reacting with a reaction medium to store and release heat; a reaction vessel for accommodating the reactant formed body and exchanging heat with the reactant formed body; a reaction medium flow path structure, connected to the reaction vessel, for supplying the reaction medium to the reaction vessel or discharging the reaction medium from the reaction vessel. The reactant formed body includes a plate-like heat transfer plate that contacts the reaction vessel, heat transfer elements extending from a surface of the heat transfer plate at substantially right angles, and a reactant formed unit that encloses the heat transfer elements in such a way that the heat transfer elements are partially exposed from the reactant formed unit, and the reaction vessel can change form by a pressure difference between the outside and the inside of the reaction vessel.Type: ApplicationFiled: March 24, 2016Publication date: October 6, 2016Inventors: Yasutomo AMAN, Yohei SHIREN, Masahiro MASUZAWA, Hiroko OHKURA, Tomiko TAKAHASHI, Yoshifumi OHBA, Kohji TSUKAHARA, Kenichi HAYAKAWA
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Publication number: 20160264436Abstract: A fluid treatment apparatus includes a reactor that decomposes an organic matter contained in a mixed fluid of a fluid to be treated and an oxidizing agent, an oxidizing agent injector that includes an injection port to inject the oxidizing agent into the reactor, a fluid discharger that is disposed to surround the oxidizing agent injector and includes an outlet to discharge the fluid in the reactor, and a pressurizer that pressurizes the oxidizing agent. The fluid discharger has a fluid passage a diameter of which is larger than a maximum particle diameter of a solid material contained in the fluid and a shape of which does not create a pressure difference in the fluid passage, the outlet of the fluid discharger being provided to discharge the fluid toward the oxidizing agent injector. The apparatus atomizes the fluid by pressure energy of the injected oxidizing agent.Type: ApplicationFiled: March 11, 2016Publication date: September 15, 2016Inventors: Kenichi HAYAKAWA, Satoshi SHINOHARA, Toshiyuki MUTOH, Shogo SUZUKI, Yuu ZAMA, Kimio AOKI
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Patent number: 9260330Abstract: A fluid purifying apparatus that purifies fluid containing organic matter has a reactor including a first transfer part that receives the fluid from outside and transfers the fluid in a vertical direction from an upper side to a lower side while heating and pressurizing the fluid and mixing the fluid with an oxidant, a second transfer part that receives the fluid that has passed through the first transfer part and transfers the fluid in the vertical direction from the lower side to the upper side, and a partition member that partitions an upper part of the reactor into the first transfer part and the second transfer part, and a solid storage part that communicates with the first transfer part and the second transfer part below the partition member and receives solid matter contained in the fluid that settles while the fluid is transferred.Type: GrantFiled: August 6, 2013Date of Patent: February 16, 2016Assignee: RICOH COMPANY, LTD.Inventors: Kenichi Hayakawa, Shogo Suzuki, Hideyuki Miyazawa, Kimio Aoki, Noriaki Okada, Aya Utsuki, Yuu Zama, Toshiyuki Mutoh, Shigeru Yamada, Makito Nakashima
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Publication number: 20150376042Abstract: A fluid treatment apparatus for treating a target fluid is provided. The fluid treatment apparatus includes a cylindrical reactor and one or more catalyst members each having a rod-like or plate-like shape extending in a longitudinal direction within the reactor. The cylindrical reactor decomposes an organic substance contained in a mixed fluid of the target fluid with an oxidant by an oxidation reaction under heat and pressure. The cylindrical reactor has an introduction port on one end and a discharge port on the other end. An upstream end surface, relative to a direction of flow of the target fluid, of each of the catalyst members is located in a downstream vicinity of or upstream from an inflow position where the target fluid flows into the reactor through the introduction port. Each of the catalyst members is suspended with the upstream end surface being fixed.Type: ApplicationFiled: June 4, 2015Publication date: December 31, 2015Inventors: Toshiyuki MUTOH, Shogo SUZUKI, Yuu ZAMA, Aya UTSUKI, Kimio AOKI, Hideyuki MIYAZAWA, Makito NAKASHIMA, Kenichi HAYAKAWA, Shigeru YAMADA
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Publication number: 20150368129Abstract: A fluid treatment apparatus for treating a target fluid is provided. The fluid treatment apparatus includes a reactor to decompose an organic substance contained in a mixed fluid of the target fluid with an oxidant by an oxidation reaction. The reactor includes a cylindrical base material, a catalyst, and a migration space. The catalyst accelerates the oxidation reaction of the organic substance, and is disposed along an inner periphery of the cylindrical base material. Into the migration space, solids precipitated in the oxidation reaction migrate in a longitudinal direction without accumulating.Type: ApplicationFiled: June 3, 2015Publication date: December 24, 2015Inventors: Yuu ZAMA, Toshiyuki MUTOH, Hideyuki MIYAZAWA, Makito NAKASHIMA, Shogo SUZUKI, Aya UTSUKI, Kenichi HAYAKAWA, Kimio AOKI, Shigeru YAMADA
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Publication number: 20150274948Abstract: [Solution] A polypropylene resin composition includes 100 parts by weight of basic components including a polypropylene resin (A) including a propylene polymer, the propylene polymer having a MFR of 10 to 300 g/10 min and containing 98 mol % or more of structural units derived from propylene, an ethylene.?-olefin copolymer (B) having an ethylene content of 65 to 90 mol %, and optionally an inorganic filler (E); 0.2 to 1 part by weight of a fatty acid amide (C); and 0.2 to 1 part by weight of a surfactant (D). [Effect] The polypropylene resin compositions of the invention have excellent shaping properties such as injection molding properties and can give shaped articles which exhibit excellent properties such as rigidity and impact resistance and which are effectively prevented from deteriorations in surface properties due to friction with soft substances such as rubbers (namely, have excellent kicking scuff resistance), thus finding suitable applications in automobile interior and exterior parts.Type: ApplicationFiled: September 17, 2013Publication date: October 1, 2015Inventors: Yusuke Fukuda, Kenichi Hayakawa, Yoshinobu Hatano
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Publication number: 20140151277Abstract: A fluid purification system includes a reaction tank which purifies a purification target fluid by decomposing an organic substance in a purification target fluid with an oxidation reaction while heating and pressurizing a mixed fluid of the purification target fluid and an oxidant; a crusher which crushes an organic solid waste so as to obtain an organic crushed product; and a mixer which mixes the organic crushed product and liquid so as to obtain high concentration organic slurry.Type: ApplicationFiled: December 3, 2013Publication date: June 5, 2014Applicant: RICOH COMPANY, LTD.Inventors: Kimio Aoki, Shogo SUZUKI, Toshiyuki MUTOH, Hideyuki MIYAZAWA, Makito NAKASHIMA, Aya UTSUKI, Kenichi HAYAKAWA, Yu ZAMA, Shigeru YAMADA
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Publication number: 20140048464Abstract: A fluid purifying apparatus that purifies fluid containing organic matter has a reactor including a first transfer part that receives the fluid from outside and transfers the fluid in a vertical direction from an upper side to a lower side while heating and pressurizing the fluid and mixing the fluid with an oxidant, a second transfer part that receives the fluid that has passed through the first transfer part and transfers the fluid in the vertical direction from the lower side to the upper side, and a partition member that partitions an upper part of the reactor into the first transfer part and the second transfer part, and a solid storage part that communicates with the first transfer part and the second transfer part below the partition member and receives solid matter contained in the fluid that settles while the fluid is transferred.Type: ApplicationFiled: August 6, 2013Publication date: February 20, 2014Applicant: RICOH COMPANY, LTD.Inventors: Kenichi HAYAKAWA, Shogo SUZUKI, Hideyuki MIYAZAWA, Kimio AOKI, Noriaki OKADA, Aya UTSUKI, Yuu ZAMA, Toshiyuki MUTOH, Shigeru YAMADA, Makito NAKASHIMA
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Publication number: 20130153477Abstract: An inner tube is provided with a protruding portion protruding from an outer peripheral surface of the tube, in a position extending throughout the entire area of the outer peripheral surface of the tube, in a region located outside an outer tube, of the entire area in a longitudinal direction of the inner tube inserted into a through-hole of a discharge side wall of the outer tube, and the protruding portion of the inner tube is pressed by an outlet joint toward the discharge side wall along an axial direction of the outer tube, and thereby, the inner tube is cantilevered by the discharge side wall.Type: ApplicationFiled: December 14, 2012Publication date: June 20, 2013Applicant: RICOH COMPANY, LTD.Inventors: Shogo Suzuki, Hideyuki Miyazawa, Noriaki Okada, Shozo Murata, Toshiyuki Mutoh, Shigeru Yamada, Makito Nakashima, Aya Utsuki, Kenichi Hayakawa, Kimio Aoki, Yuu Zama
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Patent number: 7472773Abstract: An electrically driven power steering apparatus is structured such that a large impact on a rack shaft occurs upon an impingement of a steering stopper, and, even when an axial force acting on a ball bearing of a presser member becomes zero, a rotation of the presser member is hindered by caulking c at a thin plate member. Therefore, the presser member does not slacken, and a predetermined axial force can be given again to the ball bearing when the impact dissipates. The thus structured power steering apparatus exhibiting, though the cost is low, an excellent shockproof characteristic and capable of preventing the bearing from coming off a ball screw nut, can be provided.Type: GrantFiled: May 24, 2007Date of Patent: January 6, 2009Assignee: NSK Ltd.Inventors: Toshihiro Fukuda, Shuji Endo, Hiroshi Eda, Osama Tatewaki, Kenichi Hayakawa, Hirotaka Hatano
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Publication number: 20070227804Abstract: An electrically driven power steering apparatus is structured such that a large impact on a rack shaft occurs upon an impingement of a steering stopper, and, even when an axial force acting on a ball bearing of a presser member becomes zero, a rotation of the presser member is hindered by caulking c at a thin plate member. Therefore, the presser member does not slacken, and a predetermined axial force can be given again to the ball bearing when the impact dissipates. The thus structured power steering apparatus exhibiting, though the cost is low, an excellent shockproof characteristic and capable of preventing the bearing from coming off a ball screw nut, can be provided.Type: ApplicationFiled: May 24, 2007Publication date: October 4, 2007Applicant: NSK Ltd.Inventors: Toshihiro Fukuda, Shuji Endo, Hiroshi Eda, Osamu Tatewaki, Kenichi Hayakawa, Hirotaka Hatano
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Patent number: 7219761Abstract: An electrically driven power steering apparatus is structured such that a large impact on a rack shaft occurs upon an impingement of a steering stopper, and, even when an axial force acting on a ball bearing of a presser member becomes zero, a rotation of the presser member is hindered by caulking c at a thin plate member. Therefore, the presser member does not slacken, and a predetermined axial force can be given again to the ball bearing when the impact dissipates. The thus structured power steering apparatus exhibiting, though the cost is low, an excellent shockproof characteristic and capable of preventing the bearing from coming off a ball screw nut, can be provided.Type: GrantFiled: March 19, 2004Date of Patent: May 22, 2007Assignee: NSK Ltd.Inventors: Toshihiro Fukuda, Shuji Endo, Hiroshi Eda, Osamu Tatewaki, Kenichi Hayakawa, Hirotaka Hatano, Mineki Okamoto
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Patent number: 6851508Abstract: An electrically driven power steering apparatus is structured such that a large impact on a rack shaft (22) occurs upon an impingement of a steering stopper, and, even when an axial force acting on a ball bearing (25) of a presser member (30) becomes zero, a rotation of the presser member (30) is hindered by caulking c at a thin plate member (30b). Therefore, the presser member (30) does not slacken, and a predetermined axial force can be given again to the ball bearing (25) when the impact dissipates. The thus structured power steering apparatus exhibiting, though the cost is low, an excellent shockproof characteristic and capable of preventing the bearing from coming off a ball screw nut, can be provided.Type: GrantFiled: July 23, 2001Date of Patent: February 8, 2005Assignee: NSK Ltd.Inventors: Toshihiro Fukuda, Shuji Endo, Hiroshi Eda, Osamu Tatewaki, Kenichi Hayakawa, Hirotaka Hatano
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Publication number: 20040245041Abstract: An electrically driven power steering apparatus is structured such that a large impact on a rack shaft occurs upon an impingement of a steering stopper, and, even when an axial force acting on a ball bearing of a presser member becomes zero, a rotation of the presser member is hindered by caulking c at a thin plate member. Therefore, the presser member does not slacken, and a predetermined axial force can be given again to the ball bearing when the impact dissipates. The thus structured power steering apparatus exhibiting, though the cost is low, an excellent shockproof characteristic and capable of preventing the bearing from coming off a ball screw nut, can be provided.Type: ApplicationFiled: March 19, 2004Publication date: December 9, 2004Inventors: Toshihiro Fukuda, Shuji Endo, Hiroshi Eda, Osamu Tatewaki, Kenichi Hayakawa, Hirotaka Hatano, Mineki Okamoto
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Publication number: 20040154857Abstract: An electrically driven power steering apparatus is structured such that a large impact on a rack shaft (22) occurs upon an impingement of a steering stopper, and, even when an axial force acting on a ball bearing (25) of a presser member (30) becomes zero, a rotation of the presser member (30) is hindered by caulking c at a thin plate member (30b). Therefore, the presser member (30) does not slacken, and a predetermined axial force can be given again to the ball bearing (25) when the impact dissipates. The thus structured power steering apparatus exhibiting, though the cost is low, an excellent shockproof characteristic and capable of preventing the bearing from coming off a ball screw nut, can be provided.Type: ApplicationFiled: December 31, 2003Publication date: August 12, 2004Inventors: Toshihiro Fukuda, Shuji Endo, Hiroshi Eda, Osamu Tatewaki, Kenichi Hayakawa, Hirotaka Hatano
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Publication number: 20030019686Abstract: An electrically driven power steering apparatus is structured such that a large impact on a rack shaft (22) occurs upon an impingement of a steering stopper, and, even when an axial force acting on a ball bearing (25) of a presser member (30) becomes zero, a rotation of the presser member (30) is hindered by caulking c at a thin plate member (30b). Therefore, the presser member (30) does not slacken, and a predetermined axial force can be given again to the ball bearing (25) when the impact dissipates. The thus structured power steering apparatus exhibiting, though the cost is low, an excellent shockproof characteristic and capable of preventing the bearing from coming off a ball screw nut, can be provided.Type: ApplicationFiled: August 12, 2002Publication date: January 30, 2003Inventors: Toshihiro Fukuda, Shuji Endo, Hiroshi Eda, Osamu Tatewaki, Kenichi Hayakawa, Hirotaka Hatano