Patents by Inventor Masahiro Sasaki

Masahiro Sasaki 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: 11027692
    Abstract: An air bag device has an inflator and a bag unit configured to be deployed on a front part of a vehicle body with a gas supplied from the inflator. The bag unit includes a first bag, a second bag, and a connector, which are annularly connected to one another, and when the bag unit is deployed, the first bag and the second bag are erected on the vehicle body into a mountain-like shape in such a way that the bag unit forms a substantially triangular shape as a whole.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: June 8, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takashi Aoki, Osamu Kanno, Kenyu Okamura, Masato Sasaki, Hidetoshi Nakamura, Masahiro Motoyoshi, Atsushi Nakajima
  • Publication number: 20210159027
    Abstract: An operation device includes a housing, an operation member, and a detector. The housing includes an electrically conductive portion on a surface thereof. The operation member is supported by the housing such that the operation member is movable in response to an operation by an operation body, and is configured to be capacitively coupled to the operation body and to the electrically conductive portion. The detector is configured to detect whether the operation body is in proximity to the operation member based on a change in capacitance at the electrically conductive portion.
    Type: Application
    Filed: February 2, 2021
    Publication date: May 27, 2021
    Inventors: Yasuji HAGIWARA, Daisuke TAKAI, Takashi SASAKI, Takeshi MASAKI, Toshiki NAKAMURA, Masaki OTA, Hiroshi SHIGETAKA, Masahiro TAKATA
  • Patent number: 11016404
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-based graft polymer and a fluorine-containing resin particle. The fluorine-based graft polymer includes at least a first structural unit that does not have an acidic group with a pKa of 3 or less but has a fluorine atom, a second structural unit derived from a macromonomer, and a third structural unit having the acidic group with a pKa of 3 or less.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: May 25, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tomoya Sasaki, Masahiro Iwasaki, Ryosuke Fujii, Wataru Yamada, Takahiro Ishizuka
  • Publication number: 20210130639
    Abstract: A pretreatment liquid that is used together with an aqueous inkjet ink containing a pigment and water, wherein the pretreatment liquid contains resin microparticles (A), a surfactant (B), a coagulant (C) and water, the surfactant (B) contains a polyoxyalkylene alkyl ether (b-1), and the coagulant (C) contains a polyvalent metal salt and/or a cationic polymer compound and has a water absorptivity at a temperature of 40° C. and a relative humidity of 80% of 75% by mass or less.
    Type: Application
    Filed: September 28, 2018
    Publication date: May 6, 2021
    Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD.
    Inventors: Masahiro SUGIHARA, Yuki SASAKI, Toshihiro TETSUKA, Takaaki KOIKE, Akiko IMAZATO, Naoya KIKUTA, Tomoe TANABE
  • Patent number: 10998812
    Abstract: A detection error occurs due to ripple when a current transformer detects zero cross of current. Provided is a detection device for detecting zero cross of output current output from switching circuit including a first switching element and a second switching element connected in series, and the detection device has: an acquisition unit which acquires an observation value that is based on gate current or an observation value based on gate voltage of at least one switching element of the first switching element and the second switching element, during Miller period in which Miller capacitance between a drain and a gate is charged; and a detection unit which detects zero cross of output current flowing between (i) output terminal between first switching element and second switching element and (ii) a load connect to output terminal, based on observation value during Miller period.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: May 4, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Masahiro Sasaki
  • Patent number: 10989700
    Abstract: A purpose of the present invention is to provide a temperature history indicator that allows for visual confirmation of whether the temperature is at or below a prescribed temperature as well as simple conversion of this information into data. A temperature history indicator according to the present invention is characterized by being provided with a label layer and a temperature-indicating layer laminated above or below the label layer, wherein the temperature-indicating layer includes a substance having at crystallization starting temperature of 10° C. or lower and a melting point at least 20° C. higher than the crystallization starting temperature.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: April 27, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Sukekazu Aratani, Hiroshi Sasaki, Toyotaka Yuasa, Kohhei Aida, Yasuhiko Tada, Masahiro Kawasaki
  • Patent number: 10988092
    Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line, and that is routed in a vehicle body; and a plurality of control boxes that are disposed in a distribution manner along the trunk line. The trunk line includes a first trunk line portion extending in a front-and-rear direction of the vehicle body and a second trunk line portion extending in a leftward-and-rightward direction of the vehicle body. The plurality of control boxes include a branch control box that connects the first trunk line portion and the second trunk line portion, and distributes power from one of the first trunk line portion and the second trunk line portion to the other one.
    Type: Grant
    Filed: December 22, 2018
    Date of Patent: April 27, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Patent number: 10910210
    Abstract: The present invention has as its object the provision of an ultraviolet sterilizer that can reduce ultraviolet light in a wavelength region of 230 to 300 nm, which is harmful to the human body, and can output effective light in a wavelength region of 200 to 230 nm with high emission intensity. The ultraviolet sterilizer of the present invention is an ultraviolet sterilizer comprising: an ultraviolet light source; a lamp storage chamber for storing the ultraviolet light source; and a light guiding part for guiding light from the ultraviolet light source, in which a band pass filter for reducing ultraviolet light in a wavelength region harmful to a human body is provided at least one of a position between the light guiding part and the lamp storage chamber and a position of a light outputting leading end of the light guiding part, and an inner surface of the light guiding part is formed from an ultraviolet absorbing member that absorbs the ultraviolet light in the wavelength region harmful to the human body.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: February 2, 2021
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Hideaki Yagyu, Ryosuke Ikeno, Masahiro Sasaki
  • Patent number: 10886910
    Abstract: A semiconductor device, including a main switching element having a gate terminal and an emitter terminal, a sense switching element connected to the main switching element for detecting a current flowing through the main switching element, and a voltage division circuit connected between the gate terminal and the emitter terminal of the main switching element. The voltage division circuit includes a first resistor and a second resistor connected in series. A connection point of the first resistor and the second resistor is connected to the sense switching element, so that a voltage applied to the gate terminal of the main switching element is divided by the voltage division circuit, and a portion of the voltage is applied to the sense switching element.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: January 5, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Masahiro Sasaki
  • Patent number: 10725087
    Abstract: To provide a semiconductor integrated device capable of a gate screening test with no need for any additional circuit and without adding any gate screening terminal. The semiconductor integrated device includes a gate drive unit configured to drive the gate of a voltage controlled semiconductor element and a regulator configured to supply a gate drive voltage to the gate drive unit. The regulator includes an external connection terminal capable of receiving a gate screening voltage for the voltage controlled semiconductor element in a gate screening test.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: July 28, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Takahiro Mori, Hitoshi Sumida, Masahiro Sasaki, Akira Nakamori, Masaru Saito, Wataru Tomita, Osamu Sasaki
  • Publication number: 20200234941
    Abstract: The present invention has as its object the provision of an ultraviolet sterilizer that can reduce ultraviolet light in a wavelength region of 230 to 300 nm, which is harmful to the human body, and can output effective light in a wavelength region of 200 to 230 nm with high emission intensity. The ultraviolet sterilizer of the present invention is an ultraviolet sterilizer comprising: an ultraviolet light source; a lamp storage chamber for storing the ultraviolet light source; and alight guiding part for guiding light from the ultraviolet light source, in which a band pass filter for reducing ultraviolet light in a wavelength region harmful to a human body is provided at least one of a position between the light guiding part and the lamp storage chamber and a position of a light outputting leading end of the light guiding part, and an inner surface of the light guiding part is formed from an ultraviolet absorbing member that absorbs the ultraviolet light in the wavelength region harmful to the human body.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 23, 2020
    Applicant: Ushio Denki Kabushiki Kaisha
    Inventors: Hideaki YAGYU, Ryosuke IKENO, Masahiro SASAKI
  • Publication number: 20200221686
    Abstract: An aspect of the present invention relates to a wrapping tape for repelling insects, the wrapping tape having a number of male engagement elements on a front surface of a tape, and a number of loop-shaped engagement elements on a rear surface of the tape, wherein the male engagement elements and the loop-shaped engagement elements can be engaged each other, and an insect repellent component is applied at least to the front surface of the tape and the male engagement elements.
    Type: Application
    Filed: July 5, 2018
    Publication date: July 16, 2020
    Applicant: KURARAY FASTENING CO., LTD.
    Inventors: Kouichi KAWABATA, Satoru ONO, Takaya HIRANO, Masahiro SASAKI
  • Publication number: 20200171604
    Abstract: A heat transfer body 3 is prepared. The heat transfer body 3 forms an inner space 7 for existence of one of a higher-temperature fluid or a lower-temperature fluid. The heat transfer body 3 constitutes a heat exchanger, and is formed of a copper material as a wall surrounding the inner space 7. In the wall, a flow path through which the other of the higher-temperature fluid and the lower-temperature fluid flows is formed. By LMD treatment, an LMD layer is formed directly on an outer circumferential surface 3a of the heat transfer body 3. In the LMD treatment, a metal material is supplied to a supply position on the outer circumferential surface 3a, and the supply position is irradiated with laser light to form an LMD layer 5. An energy density of the laser light is set to melt both the metal material and the outer circumferential surface 3a.
    Type: Application
    Filed: May 28, 2018
    Publication date: June 4, 2020
    Inventors: Ideo Masuda, Toshiki Kato, Takuma Inoue, Masahiro Sasaki
  • Patent number: 10622988
    Abstract: A power semiconductor module includes an insulated-gate type power semiconductor device, and a drive circuit controlling a gate voltage applied to the power semiconductor device in accordance with an input signal to drive the power semiconductor device so as to turn ON and OFF. The drive circuit includes a variable resistance circuit changing the gate voltage to the power semiconductor device, and a short-circuit state detecting circuit which maintains the resistance value of the variable resistance circuit to be a predetermined value at the time of a normal operation of the power semiconductor device, and which increases the resistance value of the variable resistance circuit so as to be greater than the predetermined value when a short-circuit state of the power semiconductor device is detected to suppress an oscillation in the power semiconductor device.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: April 14, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Masahiro Sasaki
  • Publication number: 20200028505
    Abstract: A semiconductor device, including a main switching element having a gate terminal and an emitter terminal, a sense switching element connected to the main switching element for detecting a current flowing through the main switching element, and a voltage division circuit connected between the gate terminal and the emitter terminal of the main switching element. The voltage division circuit includes a first resistor and a second resistor connected in series. A connection point of the first resistor and the second resistor is connected to the sense switching element, so that a voltage applied to the gate terminal of the main switching element is divided by the voltage division circuit, and a portion of the voltage is applied to the sense switching element.
    Type: Application
    Filed: May 31, 2019
    Publication date: January 23, 2020
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventor: Masahiro SASAKI
  • Publication number: 20190356218
    Abstract: A detection error occurs due to ripple when a current transformer detects zero cross of current. Provided is a detection device for detecting zero cross of output current output from switching circuit including a first switching element and a second switching element connected in series, and the detection device has: an acquisition unit which acquires an observation value that is based on gate current or an observation value based on gate voltage of at least one switching element of the first switching element and the second switching element, during Miller period in which Miller capacitance between a drain and a gate is charged; and a detection unit which detects zero cross of output current flowing between (i) output terminal between first switching element and second switching element and (ii) a load connect to output terminal, based on observation value during Miller period.
    Type: Application
    Filed: August 1, 2019
    Publication date: November 21, 2019
    Inventor: Masahiro SASAKI
  • Patent number: 10260495
    Abstract: A piezoelectric blower includes a housing, a vibrating body, and a piezoelectric element. The vibrating body includes a vibration plate, a reinforcing plate, and a restraining plate. The vibrating body forms a columnar blower chamber with the housing while holding the blower chamber therebetween from a thickness direction of the vibration plate. The vibrating body includes an outer peripheral region in contact with an area from the outermost node of pressure vibration in the blower chamber, of nodes of the pressure vibration formed by the bending vibration of the vibrating body, to an outer periphery of the blower chamber, and a center region located in an inner side portion of the outer peripheral region. The restraining plate that restrains the bending vibration of the outer peripheral region is provided in the outer peripheral region.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: April 16, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masahiro Sasaki, Kiyoshi Kurihara, Hiroaki Wada, Nobuhira Tanaka
  • Patent number: 10221845
    Abstract: A piezoelectric blower (100) includes a housing (17), a vibrating plate (41), and a piezoelectric element (42). The vibrating plate (41) forms a column-shaped blower chamber (31) together with the housing (17). The vibrating plate (41) and the housing (17) are formed so that the blower chamber (31) has a radius a. The piezoelectric element (42) causes the vibrating plate (41) to concentrically bend and vibrate at a resonance frequency f. A recessed portion (26) is formed in the housing (17) on the side facing the vibrating plate (41). The recessed portion (26) defines a cavity (25), which constitutes the blower chamber (31) and communicates with the vent hole (24). The radius a of the blower chamber (31) and the resonance frequency f of the vibrating plate (41) satisfy a relationship of 0.8×(k0c)/(2?)?af?1.2×(k0c)/(2?).
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: March 5, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Nobuhira Tanaka, Hiroyuki Yokoi, Masahiro Sasaki, Kiyoshi Kurihara
  • Publication number: 20180372791
    Abstract: To provide a semiconductor integrated device capable of a gate screening test with no need for any additional circuit and without adding any gate screening terminal. The semiconductor integrated device includes a gate drive unit configured to drive the gate of a voltage controlled semiconductor element and a regulator configured to supply a gate drive voltage to the gate drive unit. The regulator includes an external connection terminal capable of receiving a gate screening voltage for the voltage controlled semiconductor element in a gate screening test.
    Type: Application
    Filed: April 23, 2018
    Publication date: December 27, 2018
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Takahiro MORI, Hitoshi SUMIDA, Masahiro SASAKI, Akira NAKAMORI, Masaru SAITO, Wataru TOMITA, Osamu SASAKI
  • Patent number: 10050560
    Abstract: An inverter circuit with a current detection circuitry includes a main bridge circuit connected between the pair of DC input nodes, the main bridge circuit converting the received DC voltage to a primary AC current so as to output the primary AC current through an output terminal to be connected to a load; a supplementary bridge circuit connected in parallel to the main bridge circuit between the pair of DC input nodes, the supplementary bridge circuit having a circuit configuration identical to that of the main bridge circuit with smaller circuit parameters in at least some of constituent circuit elements so as to generate a detection-use AC current that is a prescribed fraction of said AC current outputted by the main bridge circuit. The detection-use AC current is detected by a current detector so as to calculate the amount of the primary AC current.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: August 14, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Masahiro Sasaki