Patents by Inventor Katsuhiro Fujita

Katsuhiro Fujita 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: 10568607
    Abstract: A ultrasound probe according to this invention is provided with: a first dry film resist having a plurality of first apertures formed in an array shape, and respectively supporting the piezoelectric elements in close contact with a rim part of each of the first apertures in a state of partly exposing the function elements; a second dry film resist laminated on the first dry film resist, and also having second apertures respectively enclosing each of the function elements, the second dry film resist being of a thickness equivalent to that of each of the function elements; and a third dry film resist laminated on the second dry film resist, and also having third apertures, and respectively sandwiching each of the piezoelectric elements with the first dry film resist in a state of partly exposing the piezoelectric elements in close contact with a rim part of each of the third apertures.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: February 25, 2020
    Assignees: ULVAC, INC., TOHOKU UNIVERSITY
    Inventors: Taichi Suzuki, Koh Fuwa, Ken Maehira, Yasutomo Ohashi, Katsuhiro Fujita, Yoichi Haga, Tadao Matsunaga
  • Publication number: 20190290244
    Abstract: A ultrasound probe according to this invention is provided with: a first dry film resist having a plurality of first apertures formed in an array shape, and respectively supporting the piezoelectric elements in close contact with a rim part of each of the first apertures in a state of partly exposing the function elements; a second dry film resist laminated on the first dry film resist, and also having second apertures respectively enclosing each of the function elements, the second dry film resist being of a thickness equivalent to that of each of the function elements; and a third dry film resist laminated on the second dry film resist, and also having third apertures, and respectively sandwiching each of the piezoelectric elements with the first dry film resist in a state of partly exposing the piezoelectric elements in close contact with a rim part of each of the third apertures.
    Type: Application
    Filed: August 15, 2017
    Publication date: September 26, 2019
    Applicants: Ulvac, Inc., Tohoku University
    Inventors: Taichi SUZUKI, Koh FUWA, Ken MAEHIRA, Yasutomo OHASHI, Katsuhiro FUJITA, Yoichi HAGA, Tadao MATSUNAGA
  • Patent number: 10355155
    Abstract: A method of producing an optical element, which includes a glass substrate and a sheet-like formed body, is provided. The sheet-like formed body is formed of an organic resin, one surface of which has a fresnel lens pattern and the other surface of which is bonded to the glass substrate. The sheet-like formed body is a thermoplastic polymer composition. A bonding surface of the sheet-like formed body facing the glass substrate is treated by irradiating active energy. A bonding surface of the glass substrate facing the sheet-like formed body is bonded to the bonding surface of the sheet-like formed body by using a silane coupling agent as a crosslinking agent.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: July 16, 2019
    Assignee: KURARAY CO., LTD.
    Inventors: Koji Abe, Shinji Hiramatsu, Katsuhiro Fujita
  • Publication number: 20180292008
    Abstract: An object of the present invention is to achieve favorable sealability by a simple and low-cost structure using an O-ring. A sealing structure according to the present invention is provided with: a first sealing surface formed in an annular shape on a first container structural member configuring a housing (container); a second sealing surface overlaid on the first sealing surface, formed in annular shape on a second container structural member configuring the housing; a plurality of concentric O-ring grooves formed on at least one of the first sealing surface and second sealing surface; and a plurality of O-rings fitted into the plurality of O-ring grooves. The filling ratio of the O-ring in the O-ring groove positioned on an outer side of the housing is larger than the filling ratio of the O-ring in the O-ring groove positioned on an inner side of the housing.
    Type: Application
    Filed: August 4, 2016
    Publication date: October 11, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Katsuhiro FUJITA, Masahiro KATO, Tomohisa MORO, Hideki SUETAKE
  • Publication number: 20180058451
    Abstract: A scroll fluid machine includes a pair of a fixed scroll (15) and an orbiting scroll (16). The scroll fluid machine has an one-side stepped scroll structure in which a stepped part (16E) is provided only at a predetermined position on a tooth bottom surface (16D) of a involute spiral wrap (16B) of one of the fixed scroll (15) and the orbiting scroll (16) in a spiral direction, and a stepped part (15E) corresponding to the stepped part (16E) on the tooth bottom surface (16D) is provided only at a predetermined position on a tooth top surface (15C) of a involute spiral wrap (15B) of the other scroll in a spiral direction. The stepped part (16E) on the tooth bottom surface (16D) is provided at a position on an inner side of a spiral end position (16F) of the involute spiral wrap (16B) at intake closure by an involute angle of n radians in the spiral direction or at a position on an outer side of the inner-side position.
    Type: Application
    Filed: February 23, 2016
    Publication date: March 1, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.
    Inventors: Takayuki HAGITA, Takayuki KUWAHARA, Katsuhiro FUJITA, Makoto TAKEUCHI, Genta YOSHIKAWA, Hiroshi YAMAZAKI, Keita KITAGUCHI, Hajime SATO
  • Publication number: 20180045199
    Abstract: In a scroll compressor that forms two suction volume parts by engaging paired fixed scroll and turning scroll with each other while scroll laps respectively erected on end plates of the fixed scroll and the turning scroll are opposed to each other and driving the turning scroll to revolve around the fixed scroll, out of the two suction volume parts, one of the suction volume parts that is formed close to a suction port provided in a housing is made larger than the other suction volume part.
    Type: Application
    Filed: February 19, 2016
    Publication date: February 15, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.
    Inventors: Takayuki KUWAHARA, Katsuhiro FUJITA, Takayuki HAGITA, Makoto TAKEUCHI, Hajime SATO, Genta YOSHIKAWA
  • Publication number: 20180038368
    Abstract: A scroll compressor comprising a fixed scroll (15); an orbiting scroll (16) supported in a manner allowing for orbiting motion; a discharge port through which a fluid compressed by the two scrolls (15, 16) is discharged; an end plate step portion (16E) provided on an end plate of the orbiting scroll (16) formed so that a height of the end plate is higher on a center portion side in the direction of a spiral wrap and lower on an outer end side; and a wrap step portion (15E) provided on a wall portion of the fixed scroll (15) that corresponds to the end plate step portion (16E) so that a height of the wall portion is lower on the center portion side of the spiral and higher on the outer end side; wherein the orbiting scroll (16) is treated for surface hardening and the fixed scroll (15) is not treated for surface hardening.
    Type: Application
    Filed: March 8, 2016
    Publication date: February 8, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.
    Inventors: Hajime SATO, Makoto TAKEUCHI, Genta YOSHIKAWA, Kazuhide WATANABE, Katsuhiro FUJITA, Takayuki HAGITA, Takayuki KUWAHARA
  • Publication number: 20170370219
    Abstract: One of a pair of a fixed scroll and an orbiting scroll is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade bottom surface of a spiral wrap, and the other one of the scrolls is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade tip surface of a spiral wrap. A blade bottom surface of an end plate of the fixed scroll is set as a reference surface for setting a chip gap between both the scrolls. When a wrap height of the spiral wrap of the orbiting scroll is represented by (L) (Lo, Li) and a wrap height of the spiral wrap of the fixed scroll is represented by (lo, li), L (Lo, Li)>1 (lo, li) is satisfied.
    Type: Application
    Filed: January 22, 2016
    Publication date: December 28, 2017
    Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.
    Inventors: Makoto TAKEUCHI, Genta YOSHIKAWA, Hajime SATO, Takuma YAMASHITA, Takayuki HAGITA, Takayuki KUWAHARA, Katsuhiro FUJITA, Kazuhide WATANABE
  • Publication number: 20170239785
    Abstract: A method for manufacturing a compressor scroll that appropriately impinges cavitation bubbles on target regions of a scroll. The method includes the step of water jet peening by jetting cavitation bubbles generated underwater by a water jet at a first side of an end plate (13A) of the scroll (13), with a center (P1, P2, P3) of the cavitation bubbles being offset from a center (O) of the spiral shape of a wall portion (13B) on the end plate (13A) and the step portion (13Aa) and the stepped portion (13Ba) positioned at an outer peripheral portion of the cavitation bubbles (C).
    Type: Application
    Filed: August 6, 2015
    Publication date: August 24, 2017
    Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.
    Inventors: Takayuki HAGITA, Takaharu MAEGUCHI, Masafumi HAMASAKI, Yukio MICHISHITA, Yukihiro KAWAI, Hiroshi OGAWA, Makoto TAKEUCHI, Kazuhide WATANABE, Takayuki KUWAHARA, Masaki KAWASAKI, Katsuhiro FUJITA
  • Patent number: 9553227
    Abstract: Provided are an optical element and a concentrating photovoltaic device which are each capable of preventing warpage and deformation of an optical functional pattern formed in a surface thereof due to stress even in an environment with extreme temperature changes. An optical element (4) of a concentrating photovoltaic device (1) concentrating sunlight includes: a glass substrate (5) and a sheet-like molded body (6) which is made of an organic resin and includes a Fresnel lens pattern (6a) in a surface and has the other surface bonded to the glass substrate (5). The sheet-like molded body (6) has a tensile elastic modulus of 1500 MPa or less, a linear expansion coefficient of 7.0×10?5/° C. or less, an average transmittance of 85% or more in a wavelength range from 350 to 1850 nm at a thickness of 400 ?m, and a haze value of 1.0% or less.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: January 24, 2017
    Assignee: KURARAY CO., LTD.
    Inventors: Koji Abe, Shinji Hiramatsu, Katsuhiro Fujita
  • Publication number: 20160329450
    Abstract: A method of producing an optical element, which includes a glass substrate and a sheet-like formed body, is provided. The sheet-like formed body is formed of an organic resin, one surface of which has a fresnel lens pattern and the other surface of which is bonded to the glass substrate. The sheet-like formed body is a thermoplastic polymer composition. A bonding surface of the sheet-like formed body facing the glass substrate is treated by irradiating active energy. A bonding surface of the glass substrate facing the sheet-like formed body is bonded to the bonding surface of the sheet-like formed body by using a silane coupling agent as a crosslinking agent.
    Type: Application
    Filed: December 26, 2014
    Publication date: November 10, 2016
    Applicant: KURARAY CO., LTD.
    Inventors: Koji ABE, Shinji HIRAMATSU, Katsuhiro FUJITA
  • Publication number: 20150179856
    Abstract: Provided are an optical element and a concentrating photovoltaic device which are each capable of preventing warpage and deformation of an optical functional pattern formed in a surface thereof due to stress even in an environment with extreme temperature changes. An optical element (4) of a concentrating photovoltaic device (1) concentrating sunlight includes: a glass substrate (5) and a sheet-like molded body (6) which is made of an organic resin and includes a Fresnel lens pattern (6a) in a surface and has the other surface bonded to the glass substrate (5). The sheet-like molded body (6) has a tensile elastic modulus of 1500 MPa or less, a linear expansion coefficient of 7.0×10?5/° C. or less, an average transmittance of 85% or more in a wavelength range from 350 to 1850 nm at a thickness of 400 ?m, and a haze value of 1.0% or less.
    Type: Application
    Filed: July 9, 2013
    Publication date: June 25, 2015
    Applicant: KURARAY CO., LTD.
    Inventors: Koji Abe, Shinji Hiramatsu, Katsuhiro Fujita
  • Patent number: 8714950
    Abstract: A scroll compressor is provided that can reliably prevent a situation in which a product whose performance is degraded due to misassembly of a tip seal is shipped. In the scroll compressor, tip seals of different lengths are embedded in tip surfaces of a fixed spiral wrap of a fixed scroll and an orbiting spiral wrap of an orbiting scroll. Among the tip seals, thicknesses of the shorter tip seals are made thicker than thicknesses of the longer tip seals, and depths of seal grooves in which the tip seals are embedded, respectively, are formed to different depths in correspondence with the thicknesses of the respective tip seals.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: May 6, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tomohisa Moro, Norio Hioki, Koji Terasaki, Koryo Shibahara, Tetsuzo Ukai, Katsuhiro Fujita, Takayuki Kuwahara
  • Patent number: 8592085
    Abstract: The present invention relates to nickel-cobalt-manganese-based compound particles which have a volume-based average secondary particle diameter (D50) of 3.0 to 25.0 ?m, wherein the volume-based average secondary particle diameter (D50) and a half value width (W) of the peak in volume-based particle size distribution of secondary particles thereof satisfy the relational formula: W?0.4×D50, and can be produced by dropping a metal salt-containing solution and an alkali solution to an alkali solution at the same time, followed by subjecting the obtained reaction solution to neutralization and precipitation reaction. The nickel-cobalt-manganese-based compound particles according to the present invention have a uniform particle size, a less content of very fine particles, a high crystallinity and a large primary particle diameter, and therefore are useful as a precursor of a positive electrode active substance used in a non-aqueous electrolyte secondary battery.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: November 26, 2013
    Assignee: Toda Kogyo Corporation
    Inventors: Masashi Kobino, Katsuhiro Fujita, Shoichi Fujino, Akihisa Kajiyama, Ryuta Masaki, Daisuke Morita, Takayuki Yamamura, Tetsuya Kodaira, Minoru Yamasaki, Seiji Okazaki, Toshiaki Hiramoto, Akino Sato, Wataru Oda, Kenji Okinaka
  • Patent number: 8403655
    Abstract: A scroll compressor that suffers no decrease in compression performance due to leakage resulting from a twisting assembly error is provided. This scroll compressor includes a fixed scroll and an orbiting scroll, each including a spiral wrap protruding from an end plate and having the same tooth thickness (Tr) and the same base-circle radius (b) defining an involute surface. The fixed scroll and the orbiting scroll are offset from each other by an orbiting radius (?) and mesh such that the respective wraps face each other with a phase shift of 180°. The orbiting scroll revolves/orbits along a circular orbit with the orbiting radius (?) to compress a gas while a rotation-preventing mechanism prevents rotation of the orbiting scroll.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: March 26, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takayuki Kuwahara, Tetsuzou Ukai, Katsuhiro Fujita, Kazuhide Watanabe, Tomohisa Moro
  • Publication number: 20130045421
    Abstract: The present invention relates to nickel-cobalt-manganese-based compound particles which have a volume-based average secondary particle diameter (D50) of 3.0 to 25.0 ?m, wherein the volume-based average secondary particle diameter (D50) and a half value width (W) of the peak in volume-based particle size distribution of secondary particles thereof satisfy the relational formula: W?0.4×D50, and can be produced by dropping a metal salt-containing solution and an alkali solution to an alkali solution at the same time, followed by subjecting the obtained reaction solution to neutralization and precipitation reaction. The nickel-cobalt-manganese-based compound particles according to the present invention have a uniform particle size, a less content of very fine particles, a high crystallinity and a large primary particle diameter, and therefore are useful as a precursor of a positive electrode active substance used in a non-aqueous electrolyte secondary battery.
    Type: Application
    Filed: October 21, 2010
    Publication date: February 21, 2013
    Inventors: Masashi Kobino, Katsuhiro Fujita, Shoichi Fujino, Akihisa Kajiyama, Ryuta Masaki, Daisuke Morita, Takayuki Yamamura, Tetsuya Kodaira, Minoru Yamasaki, Seiji Okazaki, Toshiaki Hiramoto, Akino Sato, Wataru Oda, Kenji Okinaka
  • Patent number: 8313317
    Abstract: Provided is a scroll fluid machine that, by using a crankshaft manufactured by cold forging and a needle bearing, can sufficiently exhibit the performance of a variable circling radius mechanism, can provide a sufficient reliability on a bearing portion of the crankshaft, and can be manufactured inexpensively. For this purpose, in a crankshaft 60 used for a driving force transmission system, a reinforced shaft unit 63 and a circular column-like large diameter unit 61 are formed at an end of a rotating shaft 16, a material is produced by a cold forging process so that an eccentric shaft 62 projects from the circular column-like large diameter unit 61, the circular column-like large diameter unit 61 is rotatably coupled to a housing 11 via a needle bearing 64, and the variable circling radius mechanism is stably operated with rigidity increased by the reinforced shaft unit 63.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: November 20, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiroshi Yamazaki, Makoto Takeuchi, Tetsuzou Ukai, Kazuhide Watanabe, Tomohisa Moro, Katsuhiro Fujita, Takayuki Kuwahara, Takamitsu Himeno
  • Patent number: 8308461
    Abstract: To provide a scroll compressor capable of reducing a noise occurring in a pin-and-ring type self rotation preventing mechanism and improving compression performance. In a scroll compressor comprising: a fixed scroll member and a revolving scroll member; a driven crank mechanism for driving the revolving scroll member to revolutionary turn; and a pin-and-ring type self rotation preventing mechanism provided in plural places for preventing self rotation of a revolving scroll member, at least one of the self rotation preventing pin, the self rotation preventing ring and the self rotation preventing ring hole, which form the pin-and-ring type self rotation preventing mechanism, is provided with an orbit correction part for reducing a maximum displacement R in a direction of self rotation of the revolving scroll member to smooth a change of an orbit of the revolving scroll member in changing a pin and a ring in a section of prevention of self rotation by means of a corresponding pin and ring part.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: November 13, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takayuki Kuwahara, Tetsuzou Ukai, Katsuhiro Fujita, Takahide Ito, Makoto Takeuchi, Norio Hioki, Hideshi Hamamura, Koji Terasaki
  • Patent number: 8157553
    Abstract: In a scroll compressor, a center of a turning scroll body is shifted with respect to a drive central axis so that a distance between a gravity center and the drive central axis in a turning scroll becomes smaller than a predetermined allowable value set based on theoretical displacement and mass of the turning scroll. A moment force about the drive central axis acting on the turning scroll is reduced during revolving, and an alternating force acting on an autorotation preventing pin in the turning scroll is reduced to an allowable level.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: April 17, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiroshi Yamazaki, Makoto Takeuchi, Takahide Ito, Takamitsu Himeno, Tetsuzou Ukai, Kazuhide Watanabe, Katsuhiro Fujita, Tomohisa Moro
  • Patent number: 8152501
    Abstract: In a scroll compressor configured to be capable of three-dimensional compression in a circumferential direction and a height direction of spiral wraps, in which top surfaces and bottom surfaces of spiral wraps (25B and 27B) are provided with step portions (25E and 27E) and the wrap height on the outer peripheral side of the step portion is made higher than the wrap height on the inner peripheral side, back-pressure introducing portions (55 and 57) where gaps between the back surfaces at step-portion ends of tip seals and groove bottom surfaces of tip seal grooves are made larger than a gap at the other portion are formed between the step-portion ends of tip seals (51 and 53) provided on top surfaces (25G and 27G) on the outer peripheral side of the spiral wraps and tip seal grooves (25L and 27L) to which the tip seals are fitted.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: April 10, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Katsuhiro Fujita, Tomohisa Moro, Hirohumi Hirata, Masahiro Ohta, Kazuhide Watanabe, Takayuki Kuwahara, Makoto Takeuchi, Tetuzou Ukai