Patents by Inventor Takeshi Fujii

Takeshi Fujii 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).

  • Patent number: 11040643
    Abstract: A heat insulating sheet includes, a first sheet, a first heat insulator disposed on a main surface of the first sheet and including a first xerogel, a second heat insulator disposed on the main surface of the first sheet apart from the first heat insulator and including a second xerogel, and a second sheet disposed on the main surface of the first sheet to cover the first and second heat insulators. A first region of the heat insulating sheet provided between the first and second heat insulators viewing in a direction perpendicular to the main surface has an extensible rate larger than an extensible rate of each of the first and second heat insulators. The heat insulating property of this heat insulating sheet hardly degrades.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: June 22, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Norihiro Kawamura, Kazuhiko Kubo, Yuuichi Abe, Takeshi Fujii
  • Publication number: 20210163629
    Abstract: Carboxymethylated cellulose nanofibers in which the cellulose type I crystallinity is 60% or higher, the aspect ratio is 350 or lower, and the transmittance of light having a wavelength of 660 nm when the carboxymethylated cellulose nanofibers are made into an aqueous dispersion having a solids fraction of 1% (w/v) is 60% or higher.
    Type: Application
    Filed: December 5, 2018
    Publication date: June 3, 2021
    Inventors: Kazuhiko Inoue, Takeshi Nakatani, Yusuke Tada, Takeshi Fujii
  • Publication number: 20210151237
    Abstract: A reactor device includes a coil, a magnetic core having the coil thereon, a case accommodating the coil and the magnetic core, a cooling plate fixed to the case, an insulating sheet disposed between the coil and the cooling plate, a compressible graphite sheet disposed between the coil and the cooling plate, and a screw to fix the cooling plate to the case. The case has a screw hole and an opening provided therein. The screw passes through the screw hole to fix the cooling plate to the case. The coil contacts the insulating sheet through the opening of the case. The graphite sheet contacts the cooling plate. The reactor has high cooling performance and reliability.
    Type: Application
    Filed: December 17, 2018
    Publication date: May 20, 2021
    Inventors: TAKESHI FUJII, RYOSUKE USUI, CHIHIRO SATOU
  • Publication number: 20210134789
    Abstract: Between a source electrode (25) of a main device (24) and a current sensing electrode (22) of a current detection device (21), a resistor for detecting current is connected. Dielectric withstand voltage of gate insulator (36) is larger than a product of the resistor and maximal current flowing through the current detection device (21) with reverse bias. A diffusion length of a p-body region (32) of the main device (24) is shorter than that of a p-body (31) of the current detection device (21). A curvature radius at an end portion of the p-body region (32) of the main device (24) is smaller than that of the p-body (31) of the current detection device (21). As a result, at the inverse bias, electric field at the end portion of the p-body region (32) of the main device (24) becomes stronger than that of the p-body region (31) of the current detection device (21). Consequently, avalanche breakdown tends to occur earlier in the main device 24 than the current detection device (21).
    Type: Application
    Filed: January 7, 2021
    Publication date: May 6, 2021
    Applicants: FUJI ELECTRIC CO., LTD., DENSO CORPORATION
    Inventors: Seiji Momota, Hitoshi Abe, Takashi Shiigi, Takeshi Fujii, Koh Yoshikawa, Tetsutaro Imagawa, Masaki Koyama, Makoto Asai
  • Patent number: 10985416
    Abstract: Provided is a thermal conduction sheet that is easily attached from one face to the other face of a battery cell, the faces being perpendicular to each other. Thermal conduction sheet includes graphite sheet, and insulating sheets between and with which graphite sheet is entirely sandwiched and sealed. Graphite sheet has a plurality of cut-out portions arranged linearly. Thermal conduction sheet is bent at a region where cut-out portions are formed. Thus, thermal conduction sheet is attached from one face to the other face of a battery cell, the faces being perpendicular to each other.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: April 20, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshiya Sakaguchi, Takeshi Fujii
  • Patent number: 10948120
    Abstract: An object is to provide a heat insulating sheet that is easily attachable even if a size is increased, and to provide a method for manufacturing the same. A heat insulating sheet includes nonwoven fabric, and heat insulating body carrying xerogel in a space inside nonwoven fabric. Heat insulating body includes first region carrying the xerogel, and second region not carrying the xerogel and provided inside an outer periphery of heat insulating body. The heat insulating sheet is configured such that each of both surfaces of heat insulating body is provided with protective sheet, and in a periphery of heat insulating body and in second region, protective sheets are mutually joined or protective sheets and second region are joined.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: March 16, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Fujii, Kazushige Koyama, Yuuichi Abe, Rikako Shono
  • Patent number: 10950717
    Abstract: In a surface layer of a rear surface of the semiconductor substrate, an n+-type cathode region and a p-type cathode region are each selectively provided. The n+-type cathode region and the p-type cathode region constitute a cathode layer and are adjacent to each other along a direction parallel to the rear surface of the semiconductor substrate. The n+-type cathode region and the p-type cathode region are in contact with a cathode electrode. In an n?-type drift layer, plural n-type FS layers are provided at differing depths deeper from the rear surface of the semiconductor substrate than is the cathode layer. With such configuration, in a diode, a tradeoff relationship of forward voltage reduction and reverse recovery loss reduction may be improved and soft recovery may be realized.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: March 16, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Masaki Tamura, Hitoshi Abe, Takeshi Fujii
  • Patent number: 10923784
    Abstract: A heat-conductive sheet includes first and second insulating sheets placed on each other and a graphite sheet disposed between the first and second insulating sheets. The graphite sheet is entirely sealed by the first and second insulating sheets. The graphite sheet has a first slit provided therein. The first and second insulating sheets have a second slit passing through the first and second insulating sheets. The second slit is located inside the first slit of the graphite sheet.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: February 16, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshiya Sakaguchi, Takeshi Fujii
  • Patent number: 10916541
    Abstract: Between a source electrode (25) of a main device (24) and a current sensing electrode (22) of a current detection device (21), a resistor for detecting current is connected. Dielectric withstand voltage of gate insulator (36) is larger than a product of the resistor and maximal current flowing through the current detection device (21) with reverse bias. A diffusion length of a p-body region (32) of the main device (24) is shorter than that of a p-body (31) of the current detection device (21). A curvature radius at an end portion of the p-body region (32) of the main device (24) is smaller than that of the p-body (31) of the current detection device (21). As a result, at the inverse bias, electric field at the end portion of the p-body region (32) of the main device (24) becomes stronger than that of the p-body region (31) of the current detection device (21). Consequently, avalanche breakdown tends to occur earlier in the main device 24 than the current detection device (21).
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: February 9, 2021
    Assignees: FUJI ELECTRIC CO., LTD., DENSO CORPORATION
    Inventors: Seiji Momota, Hitoshi Abe, Takashi Shiigi, Takeshi Fujii, Koh Yoshikawa, Tetsutaro Imagawa, Masaki Koyama, Makoto Asai
  • Patent number: 10910485
    Abstract: In a surface layer of a rear surface of the semiconductor substrate, an n+-type cathode region and a p-type cathode region are each selectively provided. The n+-type cathode region and the p-type cathode region constitute a cathode layer and are adjacent to each other along a direction parallel to the rear surface of the semiconductor substrate. The n+-type cathode region and the p-type cathode region are in contact with a cathode electrode. In an n?-type drift layer, plural n-type FS layers are provided at differing depths deeper from the rear surface of the semiconductor substrate than is the cathode layer. With such configuration, in a diode, a tradeoff relationship of forward voltage reduction and reverse recovery loss reduction may be improved and soft recovery may be realized.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: February 2, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Masaki Tamura, Hitoshi Abe, Takeshi Fujii
  • Patent number: 10900813
    Abstract: An encoder signal processing device, a printer, a printer-equipped imaging apparatus, and an encoder signal processing method that can remove the effect of a noise signal mixed with an encoder signal and favorably deal with a case where an original pulse signal is lost from the encoder signal are provided. An effective detection period setting unit 523 sets an effective detection period for detecting a subsequent pulse signal, each time a pulse signal detection unit 522 detects a pulse signal from an encoder signal. The pulse signal detection unit 522 detects the pulse signal only within the set effective detection period. In a case where the pulse signal detection unit 522 does not detect the pulse signal within the effective detection period, a pulse signal generation unit 524 generates the pulse signal after the effective detection period.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: January 26, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Takeshi Fujii, Hirofumi Katsura, Hiroyuki Uchiyama
  • Publication number: 20200400438
    Abstract: An on-board device includes a sensor device that detects at least one sensor detection value. Sensor information includes the at least one sensor detection value and a detection time. A mobile terminal receives the sensor information and positioning information from the on-board device. The mobile terminal includes an information synchronizer that synchronizes positioning information with the sensor information when a time difference between a time at which the positioning information is obtained and the detection time is equal to or less than a predetermined value. The positioning information includes a position obtained by a positioning information obtaining unit and the time at which the position is obtained. A movable-object position estimation unit estimates a position of a movable object based on the positioning information and the sensor information synchronized with each other by the information synchronizer.
    Type: Application
    Filed: January 16, 2019
    Publication date: December 24, 2020
    Applicant: MICWARE CO., LTD.
    Inventors: Takeshi FUJII, Makoto ITO
  • Patent number: 10847641
    Abstract: Among trenches disposed in a striped-shape parallel to a front surface of a semiconductor substrate, a gate electrode at a gate potential is provided in a gate trench, via a gate insulating film; and in a dummy trench, a dummy gate electrode at an emitter electric potential is provided, via a dummy gate insulating film. Among mesa regions, in a first mesa region functioning as a MOS gate, a first p-type base region is provided in a surface region overall. In a second mesa region not functioning as a MOS gate, a second p-type base region is selectively provided at a predetermined interval, along a first direction. At least one of the trenches on each side of a mesa region is a gate trench and at at least one side wall of the gate trench, a MOS gate is driven. As a result, the ON voltage may be reduced.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: November 24, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Hitoshi Abe, Takeshi Fujii, Tomoyuki Obata
  • Patent number: 10766274
    Abstract: A pulse signal is detected from an encoder signal of a rotary encoder. The detected pulse signal is used as a signal for controlling a light exposure timing of a line type light exposure head and is used for detecting a transport speed of an instant film. The light exposure head sequentially performs light exposure for a line image on the transported instant film in synchronization with each pulse signal detected from the encoder signal, and a density correction unit corrects an amount of light emission of the light exposure head depending on the transport speed of the instant film.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: September 8, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Takeshi Fujii, Hirofumi Katsura, Hiroyuki Uchiyama
  • Patent number: 10731751
    Abstract: A control device for an automatic transmission of a vehicle includes a shift control section including; a deceleration state judging section configured to judge whether a deceleration of the vehicle is a gentle deceleration state or a sudden deceleration state, and a downshift control section configured to command a plural stage downshift to downshift from a current shift stage of the automatic shift mechanism to a target shift stage that is lower than the current shift stage by two stages or more when the deceleration state judging section judges the sudden deceleration state.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: August 4, 2020
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Kunihiko Okumura, Takeshi Fujii
  • Patent number: 10613430
    Abstract: In a case that accommodates an instant film, an exposure opening portion, a discharge port, and a claw opening portion are provided. The exposure opening portion is light-shielded by a film cover that is disposed to overlap the instant film. The film cover includes a notched portion connected to the claw opening portion. In a case where the film cover is not removed in use, a claw inserted through the claw opening portion is moved within a range of the notched portion. In a case where the film cover is removed in use, the claw is moved within a range that exceeds the range of the notched portion.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: April 7, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Takeshi Fujii
  • Patent number: 10613431
    Abstract: In a case that accommodates an instant film, a first claw opening portion and a second claw opening portion for inserting a claw into the case are provided. In a film cover that light-shields an exposure opening portion of the case, a notched portion continuous to the first claw opening portion is provided. In a case where the film cover is not removed in use, the first claw opening portion is used, and in a case where the film cover is removed in use, the second claw opening portion is used. By using the first claw opening portion, it is possible to avoid contact of the claw and the film cover, and to discharge only an instant film in a state where the film cover is mounted.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: April 7, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Takeshi Fujii
  • Publication number: 20200087417
    Abstract: The present invention intends to provide an acid type carboxylated cellulose nanofiber having a high viscosity in a low shear region, or to provide an acid type carboxylated cellulose nanofiber having a very short fiber length, and the acid type carboxylated cellulose nanofiber has a carboxy group at least in part of a constituent unit constituting a cellulose molecular chain, wherein a viscosity of water dispersion with a content from 0.95 to 1.05% by mass is 400 Pa·s or higher at a shear velocity from 0.003 to 0.01 s?1 at 30° C., or an average fiber length is from 50 to 500 nm and a ratio of fibers having a fiber length of 300 nm or shorter is 50% or higher.
    Type: Application
    Filed: November 2, 2017
    Publication date: March 19, 2020
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Satoshi TAKAICHI, Takeshi NAKATANI, Masahiro MORITA, Shinichi ONOGI, Takeshi FUJII, Kenichiro SASAKI, Makoto MATSUMOTO, Takeshi NAKAYAMA
  • Patent number: 10533470
    Abstract: To improve the oil separation performance in an oil separation device for an internal combustion engine. The oil separation device (10) comprises a gas liquid separation passage (56) internally defined by a lower wall, an upper wall and a pair of side walls, and extending in a horizontal direction, a gas inlet (54) and a gas outlet (63) provided on either end of the gas liquid separation passage, a plurality of lower partition walls (56H) projecting upward from the lower wall, and a plurality of upper partition walls (56J) projecting downward from the upper wall. The lower partition walls and the upper partition wall are tilted with respective the length wise direction in plan view so as to define a spiral passage. The lower wall is inclined with respect to a horizontal plane such that an upstream part of the lower wall is lower than a downstream part of the lower wall with respect to a direction of the swirl flow.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: January 14, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takeshi Fujii, Kazunari Shigemoto, Mayuka Odo, Yuya Kasajima, Hirotaka Komatsu, Junya Saito, Kouji Nakano, Sei Maruyama, Yoshiki Matsushiro
  • Publication number: 20190372181
    Abstract: Provided is a thermal conduction sheet that is easily attached from one face to the other face of a battery cell, the faces being perpendicular to each other. Thermal conduction sheet includes graphite sheet, and insulating sheets between and with which graphite sheet is entirely sandwiched and sealed. Graphite sheet has a plurality of cut-out portions arranged linearly. Thermal conduction sheet is bent at a region where cut-out portions are formed. Thus, thermal conduction sheet is attached from one face to the other face of a battery cell, the faces being perpendicular to each other.
    Type: Application
    Filed: June 16, 2017
    Publication date: December 5, 2019
    Inventors: YOSHIYA SAKAGUCHI, TAKESHI FUJII