Patents by Inventor Hiroaki Fujiwara
Hiroaki Fujiwara 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: 20240052938Abstract: A relief valve relieves hydraulic fluid from a first port to a second port, and includes a housing and an adjustment member capable of advancing and retracting; a seat member with a relief passage connecting to the two ports; a relief valve body that is unseated from or seated on the seat member to open or close the relief passage, and that receives pressure of the first port in a direction of opening the relief passage; a first biasing member that biases the relief valve body against the pressure of the first port, with a force adjusted by the adjustment member; a check valve body that opens or closes a check passage connecting to the two ports, and that receives pressure of the second port in a direction of opening the check passage; and a second biasing member that biases the check valve body.Type: ApplicationFiled: October 26, 2021Publication date: February 15, 2024Inventors: Noboru ITO, Akihiro NAKAHARA, Hiroaki FUJIWARA, Yuko FUNAKUBO, Fumio KAMEYAMA
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Patent number: 11820105Abstract: One aspect of the present invention is a prepreg including a resin composition or a semi-cured product of the resin composition and a fibrous base material, in which the resin composition contains a modified polyphenylene ether compound terminally modified with a substituent having an unsaturated carbon-carbon double bond, and a crosslinkable curing agent having an unsaturated carbon-carbon double bond in a molecule, the fibrous base material is quartz glass cloth, the prepreg contains a silane coupling agent having an unsaturated carbon-carbon double bond in a molecule, in an amount of 0.01% by mass or more and less than 3% by mass with respect to the prepreg, and a cured product of the prepreg has a dielectric loss tangent of 0.002 or less at 10 GHz.Type: GrantFiled: September 28, 2018Date of Patent: November 21, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mikio Sato, Hiroaki Fujiwara, Yuki Kitai, Masashi Koda, Yasunori Hoshino
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Patent number: 11603941Abstract: A relief valve includes: a housing; a plunger movable to each of a closed position and an open position; a differential pressure chamber; a spring member; a piston; and a damping chamber. The plunger includes a first damping passage penetrating the plunger and bringing an area outside the plunger and a through passage into communication. The piston includes a second damping passage penetrating the piston and bringing an area inside the piston and the damping chamber into communication. A communication space connected to each of the first damping passage and the second damping passage is formed between the plunger and the piston.Type: GrantFiled: April 7, 2020Date of Patent: March 14, 2023Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hiroaki Fujiwara, Masahiro Matsuo
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Patent number: 11555338Abstract: A power unit for a powered cinching mechanism with a favorable level of operational noise is provided. A door latch apparatus includes latch unit and power unit. Latch unit has latch that engages striker, ratchet that engages latch and first cinching lever that displaces latch from a half-latched position to a full-latched position. Latch unit is attached to an end portion of a vehicle door. Power unit includes motor, cable drum, deceleration mechanism and closed-type housing that houses them. Operational noise at 300 mm right above the housing of power unit is 42.2 to 40.9 dB at a supply voltage to the motor of 9V, 47.5 to 43.9 dB at a supply voltage of 12V, and 49.7 to 46.5 dB at a supply voltage of 16 V. Deceleration mechanism includes a worm gear and a helical gear.Type: GrantFiled: October 20, 2017Date of Patent: January 17, 2023Assignee: MITSUI KINZOKU ACT CORPORATIONInventors: Tomoharu Nagaoka, Hiroaki Fujiwara
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Patent number: 11477883Abstract: A metal-clad laminate includes: an insulating layer; and a metal foil being in contact with at least one surface of the insulating layer. The insulating layer contains a cured product of a resin composition containing a polyphenylene ether copolymer having an intrinsic viscosity of 0.03 to 0.12 dl/g measured in methylene chloride at 25° C. and having an average of 1.5 to 3 specific groups per molecule at its molecular terminal, a thermosetting curing agent having two or more carbon-carbon unsaturated double bonds at its molecular terminal, and a thermoplastic elastomer. The metal foil includes a metal substrate, and a cobalt-containing barrier layer provided on at least a contact surface of the metal substrate, the contact surface being in contact with the insulating layer. The contact surface has a ten-point average roughness Rz of 2 ?m or less as a surface roughness.Type: GrantFiled: June 22, 2018Date of Patent: October 18, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kosuke Tsuda, Hirosuke Saito, Hiroaki Fujiwara
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Patent number: 11466706Abstract: A valve device that changes the direction of flow of a hydraulic fluid supplied to and discharged from a cylinder mechanism to actuate the cylinder mechanism, the valve device including: a control valve including a main spool axially movable between different positions; a lock valve including a plunger and a pressure chamber; and a selector valve including a selector spool operable in conjunction with the main spool to axially move between different positions, the selector spool being located adjacent to the main spool and having an axis crossing an axis of the main spool.Type: GrantFiled: April 23, 2019Date of Patent: October 11, 2022Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hiroaki Fujiwara, Noboru Ito, Hiroshi Itoh
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Patent number: 11454051Abstract: In a vehicle door latch apparatus, a one-motion operation can be allowed. Switching element is in a double unlocked state when it is in the connected position and is in a double locked state when it is in the disconnected position. The double unlocked state enables a one-motion operation, in which switching element is linked to the release operation of first inside lever in order to switch the locking mechanism from the locked state to the unlocked state and in which the release operation of first inside lever is transmitted to second inside lever in order to open the door, and in the double locked state, switching element is not linked to the release operation of first inside lever, prevents the release operation of first inside lever from being transmitted to second inside lever and prevents the locking mechanism from being switched from the locked state to the unlocked state.Type: GrantFiled: November 28, 2017Date of Patent: September 27, 2022Assignee: MITSUI KINZOKU ACT CORPORATIONInventors: Tomoharu Nagaoka, Hiroaki Fujiwara
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Publication number: 20220246456Abstract: An information processing apparatus includes an acquisition unit configured to acquire information including a processing result of processing a substrate by a substrate processing apparatus configured to perform substrate processing at a first timing, event information about an event having occurred in the substrate processing apparatus at a second timing after the first timing, and a processing result of processing the substrate by the substrate processing apparatus at a third timing after the second timing, and a display control unit configured to perform control so that a display device displays a chronological graph of a processing result including the processing result at the first timing and the processing result at the third timing based on the information acquired by the acquisition unit, wherein the display control unit performs control to display information in a superimposed manner on the graph, the information indicating the second timing.Type: ApplicationFiled: February 1, 2022Publication date: August 4, 2022Inventor: Hiroaki Fujiwara
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Patent number: 11401393Abstract: A prepreg includes a resin composition or a semi-cured product of the resin composition, and a glass cloth, wherein the resin composition contains a modified polyphenylene ether compound terminally modified with a substituent having an unsaturated carbon-carbon double bond, and a crosslinkable curing agent having an unsaturated carbon-carbon double bond in a molecule, a content of the modified polyphenylene ether compound is 40 to 90 mass % with respect to a total mass of the modified polyphenylene ether compound and the crosslinkable curing agent, a cured product of the resin composition has a relative permittivity of 2.6 to 3.8, the glass cloth has a relative permittivity of 4.7 or less and a dielectric loss tangent of 0.0033 or less, and a cured product of the prepreg has a relative permittivity of 2.7 to 3.8 and a dielectric loss tangent of 0.002 or less.Type: GrantFiled: September 28, 2018Date of Patent: August 2, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuki Kitai, Mikio Sato, Yasunori Hoshino, Masashi Koda, Takayoshi Ozeki, Hiroaki Fujiwara
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Publication number: 20220178456Abstract: A relief valve includes: a housing; a plunger movable to each of a closed position and an open position; a differential pressure chamber; a spring member; a piston; and a damping chamber. The plunger includes a first damping passage penetrating the plunger and bringing an area outside the plunger and a through passage into communication. The piston includes a second damping passage penetrating the piston and bringing an area inside the piston and the damping chamber into communication. A communication space connected to each of the first damping passage and the second damping passage is formed between the plunger and the piston.Type: ApplicationFiled: April 7, 2020Publication date: June 9, 2022Inventors: Hiroaki FUJIWARA, Masahiro MATSUO
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Patent number: 11351755Abstract: A metal-clad laminate includes an insulating layer including a cured product of a resin composition, and a metal foil disposed on at least one principal surface of the insulating layer. The resin composition includes a thermosetting curing agent and a polyphenylene ether copolymer. The polyphenylene ether copolymer has an intrinsic viscosity ranging from 0.03 dl/g to 0.14 dl/g, inclusive. The intrinsic viscosity is measured in methylene chloride at 25° C. And the polyphenylene ether copolymer has, at a molecular terminal, a group represented by one of formula (1) and formula (2) at an average number of more than or equal to 0.8 and less than 1.5 per one molecule. Further, the metal foil includes a barrier layer containing cobalt on a first surface of the metal foil. The first surface is in contact with the insulating layer, and has a ten-point average roughness (Rz) of less than or equal to 2.0 ?m.Type: GrantFiled: September 12, 2017Date of Patent: June 7, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuki Kitai, Hiroaki Fujiwara, Mikio Sato
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Patent number: 11293560Abstract: A solenoid flow control valve includes: an inlet passage that allows an inlet port to communicate with a pilot pressure chamber; an outlet passage that allows the pilot pressure chamber to communicate with an outlet port; a fixed restrictor provided on the outlet passage; a pilot spool that closes the inlet passage when a solenoid is in a non-excitation state, whereas when solenoid is in an excitation state, opens inlet passage at an opening degree corresponding to an input current value to generate a pilot pressure corresponding to the input current value in pilot pressure chamber, the pilot spool opening a bypass passage when input current value is less and closes bypass passage when input current value is greater than or equal to the predetermined value; and a main spool that controls a flow rate from inlet to outlet port in accordance with the pilot pressure chamber's pilot pressure.Type: GrantFiled: April 23, 2019Date of Patent: April 5, 2022Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hiroaki Fujiwara, Noboru Ito
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Patent number: 11242425Abstract: A resin composition is provided and contains a compound (A) having at least one group represented by the following Formula (1) in a molecule, a crosslinking type curing agent (B), and an azo compound (C) that has an azo group in a molecule and has no heteroatom other than a nitrogen atom constituting the azo group. In Formula (1), n represents 0 to 10, Z represents an arylene group, and R1 to R3 each independently represent a hydrogen atom or an alkyl group.Type: GrantFiled: April 22, 2019Date of Patent: February 8, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mikio Sato, Hiroaki Fujiwara, Yuki Kitai, Masashi Koda, Yasunori Hoshino, Takayoshi Ozeki
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Publication number: 20210246251Abstract: A resin composition is provided and contains a compound (A) having at least one group represented by the following Formula (1) in a molecule, a crosslinking type curing agent (B), and an azo compound (C) that has an azo group in a molecule and has no heteroatom other than a nitrogen atom constituting the azo group. In Formula (1), n represents 0 to 10, Z represents an arylene group, and R1 to R3 each independently represent a hydrogen atom or an alkyl group.Type: ApplicationFiled: April 22, 2019Publication date: August 12, 2021Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mikio SATO, Hiroaki FUJIWARA, Yuki KITAI, Masashi KODA, Yasunori HOSHINO, Takayoshi OZEKI
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Publication number: 20210239139Abstract: A valve device that changes the direction of flow of a hydraulic fluid supplied to and discharged from a cylinder mechanism to actuate the cylinder mechanism, the valve device including: a control valve including a main spool axially movable between different positions; a lock valve including a plunger and a pressure chamber; and a selector valve including a selector spool operable in conjunction with the main spool to axially move between different positions, the selector spool being located adjacent to the main spool and having an axis crossing an axis of the main spool.Type: ApplicationFiled: April 23, 2019Publication date: August 5, 2021Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hiroaki FUJIWARA, Noboru ITO, Hiroshi ITOH
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Publication number: 20210215267Abstract: A solenoid flow control valve includes: an inlet passage that allows an inlet port to communicate with a pilot pressure chamber; an outlet passage that allows the pilot pressure chamber to communicate with an outlet port; a fixed restrictor provided on the outlet passage; a pilot spool that closes the inlet passage when a solenoid is in a non-excitation state, whereas when solenoid is in an excitation state, opens inlet passage at an opening degree corresponding to an input current value to generate a pilot pressure corresponding to the input current value in pilot pressure chamber, the pilot spool opening a bypass passage when input current value is less and closes bypass passage when input current value is greater than or equal to the predetermined value; and a main spool that controls a flow rate from inlet to outlet port in accordance with the pilot pressure chamber's pilot pressure.Type: ApplicationFiled: April 23, 2019Publication date: July 15, 2021Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hiroaki FUJIWARA, Noboru ITO
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Patent number: 10982692Abstract: Provided is a swing-back preventing apparatus capable of preventing a hydraulic actuator in a stop state from operating by undesired load. The swing-back preventing apparatus includes a housing, a piston, and a pair of biasing members. First and second spaces are formed between the piston and the housing, and the piston includes a pair of communication passages that are communicable with first and second spaces. When the piston is located at a first offset position, the first space is blocked from a first port. When the piston separates from the first offset position, the first space is connected to the first port. When the piston is located at a second offset position, the second space is blocked from a second port. When the piston separates from the second offset position, the second space is connected to the second port. When the piston is located at a position on the first offset position side of a neutral position, a first communication passage is connected to the first space.Type: GrantFiled: September 20, 2018Date of Patent: April 20, 2021Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Masahiro Matsuo, Hiroaki Fujiwara
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Publication number: 20210084757Abstract: A metal-clad laminate includes: an insulating layer; and a metal foil being in contact with at least one surface of the insulating layer. The insulating layer contains a cured product of a resin composition containing a polyphenylene ether copolymer having an intrinsic viscosity of 0.03 to 0.12 dl/g measured in methylene chloride at 25° C. and having an average of 1.5 to 3 specific groups per molecule at its molecular terminal, a thermosetting curing agent having two or more carbon-carbon unsaturated double bonds at its molecular terminal, and a thermoplastic elastomer. The metal foil includes a metal substrate, and a cobalt-containing barrier layer provided on at least a contact surface of the metal substrate, the contact surface being in contact with the insulating layer. The contact surface has a ten-point average roughness Rz of 2 ?m or less as a surface roughness.Type: ApplicationFiled: June 22, 2018Publication date: March 18, 2021Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kosuke TSUDA, Hirosuke SAITO, Hiroaki FUJIWARA
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Patent number: 10897818Abstract: A metal-clad laminate includes: a cured insulating layer including a polyphenylene ether compound; a metal layer joined with the insulating layer; and an intermediate layer interposed between the insulating layer and the metal layer, the intermediate layer including a silane compound. The metal layer has a junction surface that is joined with the insulating layer via the intermediate layer. The junction surface has a ten-point average roughness Rz ranging from 0.5 ?m to 4 ?m inclusive.Type: GrantFiled: July 7, 2015Date of Patent: January 19, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuki Kitai, Hiroaki Fujiwara
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Patent number: 10870721Abstract: A polyphenylene ether resin composition includes (A) a modified polyphenylene ether that is end-modified with a substituent having a carbon-carbon unsaturated double bond, and (B) a crosslinking agent having a carbon-carbon unsaturated double bond. The crosslinking agent serving as component (B) includes from 50 to 100 mass % of (B-1) divinylbenzene and (B-2) polybutadiene. Components (A) and (B) are included in a ratio therebetween, expressed as the mass ratio (A):(B), of from 65:35 to 95:5. Components (B-1) and (B-2) are included in a ratio therebetween, expressed as the mass ratio (B-1):(B-2), of from 1:100 to 1.5:1.Type: GrantFiled: June 21, 2019Date of Patent: December 22, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuki Kitai, Hiroaki Fujiwara, Hirosuke Saito