Patents by Inventor Akihisa Nomura
Akihisa Nomura 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: 11795279Abstract: A composite material which includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni×Di2) satisfies 6.7×101 to 3.3×103, wherein the carbon fibers A have a fiber length of 5-100 mm and have a value of LwA1/(NA1ave×DA12) of 1.0×102 to 3.3×103, the carbon fiber bundles A1 having an average bundle width WA1 less than 3.5 mm and being contained in an amount of 90 vol % or larger with respect to the carbon fibers A A production method for producing a molded object from the composite material is also provided.Type: GrantFiled: November 21, 2018Date of Patent: October 24, 2023Assignee: Teijin LimitedInventors: Makoto Ootsubo, Takeru Ohki, Guofei Hua, Akihisa Nomura, Shuhei Suzuki, Shuhei Onoue, Takumi Kato, Takashi Toyozumi
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Publication number: 20230144380Abstract: A polymer (B) essentially contains units represented by the following formulas (1), (2) and (3), wherein the number of moles of unit (1) is 0 to 95, the number of moles of unit (2) is 0 to 50, and the number of moles of unit (3) is 2 to 80 when the total number of moles of units (1), (2) and (3) is 100: In units (1) to (3), “X” is a recurring unit having a benzene ring, in unit (2), —CH3 is substituted on the benzene ring, “m” is an integer of 1-6, unit (3) is obtained by substituting a hydrogen of —CH3 in unit (2) by a substituent “Z” derived from a carboxylic acid or anhydride thereof, “n” is an integer of 1-6 indicative of the number of substitutions, l+n=m, and unit (3) is a unit in which “n” is an integer of 1-6 or a combination thereof.Type: ApplicationFiled: March 29, 2021Publication date: May 11, 2023Applicant: TEIJIN LIMITEDInventors: Akihisa NOMURA, Junshi SOEDA, Masayuki CHOKAI, Katsuhiro YAMANAKA
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Patent number: 11384209Abstract: Provided is a composite material including carbon fibers having a weight average fiber length of 1 mm or more and 100 mm or less and a thermoplastic resin. The composite material satisfies K1?1.5×K2 and exhibits excellent conformability during a stretching step in press molding; and a press molded body production method using said composite material. K1 represents the inclination of an approximate straight line of linear approximation on the plot in the range of 35% strain or more, obtained by strain sweep tests from 0% to 100% on the composite material at a temperature of 270° C., a shear of 100 rad/sec, and a normal load of 2 N, plotting, both in logarithmic scales, the values of strain % versus the values of complex viscosity coefficient Pa·sec. K2 represents the inclination of an approximate straight line of linear approximation on the plot in the range of less than 35% strain.Type: GrantFiled: January 31, 2018Date of Patent: July 12, 2022Assignee: TEIJIN LIMITEDInventor: Akihisa Nomura
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Publication number: 20210108040Abstract: A composite material includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni×Di2) is 6.7×101 to 3.3×103, and a thermoplastic matrix resin. The carbon fibers A have a fiber length of 5-100 mm and the carbon fiber bundles A1 are contained in an amount of 80 vol % or larger but less than 100 vol % with respect to the carbon fibers A and wherein removal of the matrix resin from the composite material gives a carbon fiber mass which, when compressed to a thickness of Tf, has a repulsive force P of 0.05-1.00 MPa A method for producing the composite material including subjecting a composite composition to an impregnation treatment with a compression/impregnation device.Type: ApplicationFiled: November 21, 2018Publication date: April 15, 2021Applicant: Teijin LimitedInventors: Shuhei Onoue, Takumi Kato, Takashi Toyozumi, Makoto Ootsubo, Takeru Ohki, Guofei Hua, Akihisa Nomura
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Patent number: 10924672Abstract: An operation part calculates a shake amount of an imaging apparatus in accordance with a first operation system or a second operation system on the basis of an output signal of a sensor detecting an acceleration or angular velocity to determine a camera-shake correction amount correcting the shake amount. The operation part calculates the output signal of the sensor or a value obtained by integrating an integrated signal of the output signal of the sensor as a shake amount. The operation part includes an imperfect integrator. An operation system setting part sets an operation system of the operation part on the basis of the shake amount calculated by the operation part. In the second operation system, the operation system setting part increases a cut-off frequency of the imperfect integrator more than in the first operation system.Type: GrantFiled: November 16, 2018Date of Patent: February 16, 2021Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Shunya Yamane, Mitsumasa Murakami, Takeshi Ohtsuki, Mamoru Morotomi, Akihiro Nakatani, Akihisa Nomura, Aritsune Nagamura
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Patent number: 10913182Abstract: A fiber-reinforced resin shaped product includes: reinforcing fibers with a weight average fiber length of 100 mm or less; and a thermoplastic resin. The fiber-reinforced resin shaped product has grains on at least a part of a surface thereof. A maximum height (Rz) of the grains is 100 ?m to 200 ?m, and an average pitch (Rsm) between adjacent grains is 1100 ?m or less.Type: GrantFiled: December 26, 2016Date of Patent: February 9, 2021Assignee: Teijin LimitedInventors: Masaki Mitsunaga, Akihisa Nomura
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Publication number: 20200369843Abstract: A composite material which includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni×Di2) satisfies 6.7×101 to 3.3×103, wherein the carbon fibers A have a fiber length of 5-100 mm and have a value of LwA1/(NA1ave×DA12) of 1.0×102 to 3.3×103, the carbon fiber bundles A1 having an average bundle width WA1 less than 3.5 mm and being contained in an amount of 90 vol % or larger with respect to the carbon fibers A A production method for producing a molded object from the composite material-is also provided.Type: ApplicationFiled: November 21, 2018Publication date: November 26, 2020Applicant: Teijin LimitedInventors: Makoto Ootsubo, Takeru Ohki, Guofei Hua, Akihisa Nomura, Shuhei Suzuki, Shuhei Onoue, Takumi Kato, Takashi Toyozumi
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Publication number: 20190359781Abstract: Provided is a composite material including carbon fibers having a weight average fiber length of 1 mm or more and 100 mm or less and a thermoplastic resin. The composite material satisfies K1?1.5×K2 and exhibits excellent conformability during a stretching step in press molding; and a press molded body production method using said composite material. K1 represents the inclination of an approximate straight line of linear approximation on the plot in the range of 35% strain or more, obtained by strain sweep tests from 0% to 100% on the composite material at a temperature of 270° C., a shear of 100 rad/sec, and a normal load of 2 N, plotting, both in logarithmic scales, the values of strain % versus the values of complex viscosity coefficient Pa·sec. K2 represents the inclination of an approximate straight line of linear approximation on the plot in the range of less than 35% strain.Type: ApplicationFiled: January 31, 2018Publication date: November 28, 2019Inventor: Akihisa Nomura
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Patent number: 10407552Abstract: A press-molded product includes: carbon fibers having a weight average fiber length of 1 mm or more; a polyamide-based resin (X); and a polyarylene ether-based resin (Y). The carbon fibers include carbon fiber bundles. The polyamide-based resin (X) and the polyarylene ether-based resin (Y) form a sea-island structure inside and outside the carbon fiber bundles. In the sea-island structure, one of the polyamide-based resin (X) and the polyarylene ether-based resin (Y) forms a sea phase and the other forms an island phase having a particle diameter Dr of 0.05 ?m or more and less than 50 ?m.Type: GrantFiled: August 2, 2016Date of Patent: September 10, 2019Assignee: Teijin LimitedInventors: Akihisa Nomura, Katsuaki Yuasa, Guofei Hua
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Publication number: 20190199928Abstract: An operation part calculates a shake amount of an imaging apparatus in accordance with a first operation system or a second operation system on the basis of an output signal of a sensor detecting an acceleration or angular velocity to determine a camera-shake correction amount correcting the shake amount. The operation part calculates the output signal of the sensor or a value obtained by integrating an integrated signal of the output signal of the sensor as a shake amount. The operation part includes an imperfect integrator. An operation system setting part sets an operation system of the operation part on the basis of the shake amount calculated by the operation part. In the second operation system, the operation system setting part increases a cut-off frequency of the imperfect integrator more than in the first operation system.Type: ApplicationFiled: November 16, 2018Publication date: June 27, 2019Inventors: Shunya YAMANE, Mitsumasa MURAKAMI, Takeshi OHTSUKI, Mamoru MOROTOMI, Akihiro NAKATANI, Akihisa NOMURA, Aritsune NAGAMURA
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Publication number: 20190009436Abstract: A fiber-reinforced resin shaped product includes: reinforcing fibers with a weight average fiber length of 100 mm or less; and a thermoplastic resin. The fiber-reinforced resin shaped product has grains on at least a part of a surface thereof. A maximum height (Rz) of the grains is 100 ?m to 200 ?m, and an average pitch (Rsm) between adjacent grains is 1100 ?m or less.Type: ApplicationFiled: December 26, 2016Publication date: January 10, 2019Applicant: Teijin LimitedInventors: Masaki Mitsunaga, Akihisa Nomura
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Publication number: 20180134856Abstract: A press-molded product includes: carbon fibers having a weight average fiber length of 1 mm or more; a polyamide-based resin (X); and a polyarylene ether-based resin (Y). The carbon fibers include carbon fiber bundles. The polyamide-based resin (X) and the polyarylene ether-based resin (Y) form a sea-island structure inside and outside the carbon fiber bundles. In the sea-island structure, one of the polyamide-based resin (X) and the polyarylene ether-based resin (Y) forms a sea phase and the other forms an island phase having a particle diameter Dr of 0.05 ?m or more and less than 50 ?m.Type: ApplicationFiled: August 2, 2016Publication date: May 17, 2018Applicant: Teijin LimitedInventors: Akihisa Nomura, Katsuaki Yuasa, Guofei Hua
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Patent number: 7493023Abstract: A data stream generating apparatus for a recording/replaying apparatus includes a storage unit and a control module. The control module generates a video elementary stream and an audio elementary stream from inputted video data and audio data to store in the storage unit, and generates and stores a navigation pack in the storage unit. The control module determines an output order of the navigation pack, a plurality of video packs generated from the video elementary stream and a plurality of audio packs generated from the audio elementary stream based on a unit size of an output data stream, a data quantity of the video elementary stream and a data quantity of the audio elementary stream, while updating the navigation pack. Then, the control module outputs the navigation pack, the plurality of video packs, and the plurality of audio packs as an output data stream based on the output order.Type: GrantFiled: April 25, 2002Date of Patent: February 17, 2009Assignee: NEC Electronics CorporationInventors: Tomoyuki Okuyama, Akihisa Nomura
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Publication number: 20020159758Abstract: A data stream generating apparatus for a recording/replaying apparatus includes a storage unit and a control module. The control module generates a video elementary stream and an audio elementary stream from inputted video data and audio data to store in the storage unit, and generates and stores a navigation pack in the storage unit. Also, the control module determines an output order of the navigation pack, a plurality of video packs generated from the video elementary steam and a plurality of audio packs generated from the audio elementary steam based on a unit size of an outputs data stream, a data quantity of the video elementary steam and a data quantity of the audio elementary steam, while updating the navigation pack. Then, the control module reads out from the storage unit and outputs the navigation pack, the plurality of video packs, the plurality of audio packs as an output data stream based on the output order.Type: ApplicationFiled: April 25, 2002Publication date: October 31, 2002Applicant: NEC CORPORATIONInventors: Tomoyuki Okuyama, Akihisa Nomura
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Patent number: 6301206Abstract: The present invention provides an optical disc drive apparatus comprising: an optical unit (2) for reading out a data recorded on an optical disc (1) from a position specified by a servo signal; a signal processor (4) for calculating and amplifying the data which has been read out by said optical unit (2); a microcomputer (5) provided with software for performing a calculation for a servo processing and a system control according to an output signal from said signal processor (4); and a servo driver (3) for performing a servo processing via said optical unit according to an output signal from said microcomputer.Type: GrantFiled: November 9, 1998Date of Patent: October 9, 2001Assignee: NEC CorporationInventors: Akihisa Nomura, Hiroyuki Tanaka, Toshiaki Shimone