Patents by Inventor Masato Sakai

Masato Sakai 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: 10940518
    Abstract: A manufacturing method of a press-formed article includes: forming a specified shape in a plate-like member made of metal; forming a convex portion in a portion that does not undergo deformation by the forming of the specified shape in the plate-like member; and flattening the convex portion.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: March 9, 2021
    Assignee: FUTABA INDUSTRIAL CO., LTD.
    Inventors: Yasuhiro Hayashi, Masatoshi Miwa, Koichi Kume, Masato Sakai
  • Publication number: 20180345348
    Abstract: A manufacturing method of a press-formed article includes: forming a specified shape in a plate-like member made of metal; forming a convex portion in a portion that does not undergo deformation by the forming of the specified shape in the plate-like member; and flattening the convex portion.
    Type: Application
    Filed: May 28, 2018
    Publication date: December 6, 2018
    Applicant: FUTABA INDUSTRIAL CO., LTD.
    Inventors: Yasuhiro Hayashi, Masatoshi Miwa, Koichi Kume, Masato Sakai
  • Patent number: 10082752
    Abstract: A fixation device according to one of embodiments includes a first and second fixation units. The first fixation unit includes: a first belt; a first pad with a first elastic layer; and a first roller provided downstream of the first pad in a conveyance direction of a medium. The second fixation unit includes: a second belt; a second pad including a second elastic layer and pressed against the first pad with the first and second belts interposed in between; and a second roller provided downstream of the second pad in the conveyance direction and pressed against the first roller with the first second belts interposed in between. A thickness of at least one of the first and second elastic layers is smaller on a downstream side in the conveyance direction than on an upstream side in the conveyance direction.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: September 25, 2018
    Assignee: Oki Data Corporation
    Inventors: Masato Sakai, Yoshitaka Yanai, Takeshi Kojima
  • Patent number: 10060654
    Abstract: Heat pump type heating apparatus capable of performing a continuous dual-stage operation without stopping a high stage side compressor even when a return temperature of a heating medium reaches a prescribed high temperature and, thereby, improving a sense of being insufficiently warmed due to stoppage of the high stage side compressor or a sense of being insufficiently warmed due to execution of frequent defrosting operations. The heat pump type heating apparatus includes an internal heat exchanger (a second internal heat exchanger) that performs heat exchange between a low-temperature refrigerant on a low-pressure side of a low stage side refrigeration circuit and a high-temperature refrigerant on a high-pressure side of a high stage side refrigerant circuit, a bypass pipe bypassing the internal heat exchanger, and flow path control means that controls a refrigerant flow to each of the internal heat exchanger and the bypass pipe.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: August 28, 2018
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Yasunori Takayama, Hiroshi Ishida, Masato Sakai, Yoichi Negishi
  • Patent number: 9967920
    Abstract: This invention provides an electrical apparatus that includes a main body portion, a battery pack, and a frame portion. The main body portion comprises a converting portion that may convert electric power to one of light, wind, heat, and sound; and an outputting portion. The battery pack may detachably mounted on a battery holder provided at the main body portion, and may supply electric power to the converting portion. The frame portion may rotatably support the main body portion, and may define a first ground contact plane that can contact a ground surface and a second ground contact plane that can contact the ground surface at a different angle from an angle of the first ground contact plane. The main body portion may be rotatable relative to the frame portion without contacting the ground surface.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: May 8, 2018
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takafumi Itoh, Masato Sakai, Yoshinori Ishizawa, Masanori Okada, Hiroyuki Hasegawa, Takashi Kawamata
  • Publication number: 20170371282
    Abstract: A fixation device according to one of embodiments includes a first and second fixation units. The first fixation unit includes: a first belt; a first pad with a first elastic layer; and a first roller provided downstream of the first pad in a conveyance direction of a medium. The second fixation unit includes: a second belt; a second pad including a second elastic layer and pressed against the first pad with the first and second belts interposed in between; and a second roller provided downstream of the second pad in the conveyance direction and pressed against the first roller with the first second belts interposed in between. A thickness of at least one of the first and second elastic layers is smaller on a downstream side in the conveyance direction than on an upstream side in the conveyance direction.
    Type: Application
    Filed: May 18, 2017
    Publication date: December 28, 2017
    Applicant: Oki Data Corporation
    Inventors: Masato SAKAI, Yoshitaka YANAI, Takeshi KOJIMA
  • Patent number: 9696669
    Abstract: A fuser device is provided with a first endless belt, a heat application member that is enclosed by the first endless belt and heats the first endless belt, a fuser member enclosed by the first endless belt, a second endless belt of which rigidity is higher than that of the first endless belt, a pressure application member that is enclosed by the second endless belt and applies a pressure to developers on a carried recording medium in the contact part with the fuser member, and a support part forming part that forms a support part of the first endless belt and the second endless belt.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: July 4, 2017
    Assignee: Oki Data Corporation
    Inventors: Tetsuya Uehashi, Masato Sakai
  • Patent number: 9693470
    Abstract: An electric device includes: a device body; and a frame guard. The device body has a plurality of surfaces for defining a three-dimensional configuration. The frame guard is configured to guard the device body. The frame guard is connected to the device body and disposed outside the device body. The plurality of surfaces is all disposed inside the frame guard.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: June 27, 2017
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takafumi Itoh, Masanori Okada, Rui Akiba, Masato Sakai
  • Patent number: 9505120
    Abstract: A power tool includes a housing including: a body part having a substantially cylindrical shape and extends in a front-rear direction; and a handle part connected to the body part. The body part includes: a driving source; a power transmission mechanism part configured to transmit a driving force of the driving source; and a tip tool holding part to which the driving force of the driving source is transmitted from the power transmission mechanism part. The handle part includes a switch. A top part protruding from a surface of the handle part is formed on a side surface of the handle part along a longitudinal direction of the handle part. At least a portion of the top part is arranged at a position deviating rearwards from a center of the handle part in the front-rear direction.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: November 29, 2016
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshiki Aoki, Masato Sakai, Masanori Okada
  • Publication number: 20160320730
    Abstract: A fuser device is provided with a first endless belt, a heat application member that is enclosed by the first endless belt and heats the first endless belt, a fuser member enclosed by the first endless belt, a second endless belt of which rigidity is higher than that of the first endless belt, a pressure application member that is enclosed by the second endless belt and applies a pressure to developers on a carried recording medium in the contact part with the fuser member, and a support part forming part that forms a support part of the first endless belt and the second endless belt.
    Type: Application
    Filed: March 18, 2016
    Publication date: November 3, 2016
    Inventors: Tetsuya UEHASHI, Masato Sakai
  • Patent number: 9340900
    Abstract: A method of producing an epitaxial wafer, comprising: performing epitaxial growth of silicon on a main surface of a wafer made of a silicon single crystal; performing surface flattening pretreatment of a main surface of the wafer using a treatment liquid of a predetermined composition at a temperature of 100° C. or less, thereby forming an oxide film of a predetermined thickness while removing particles adhered on the main surface of the wafer; and performing a surface polishing step where the main surface of the wafer is mirror polished.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: May 17, 2016
    Assignee: Sumco Corporation
    Inventors: Shinji Nakahara, Masato Sakai, Takayuki Dohi
  • Patent number: 9158245
    Abstract: A medium transporting apparatus includes a first transporting section and first guide. The first transporting section transports a medium. The first guide guides the medium transported by the transporting section, and is disposed downstream of the first transporting section with respect to a first direction in which the medium is transported. The first guide includes a first guide portion and a second guide portion. The first guide portion extends in the first direction. The second guide portion extends in a second direction substantially perpendicular to the first direction.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: October 13, 2015
    Assignee: OKI DATA CORPORATION
    Inventors: Masato Sakai, Teruaki Kuroda, Keita Ishimori
  • Patent number: 9128433
    Abstract: A fixation device includes a pressing member, a drive roller, an auxiliary roller, and an endless fixation belt rotatably mounted, in a loop shape, on the drive roller and the auxiliary roller. The endless fixation belt is in pressure contact with the outer peripheral surface of the pressing member, thereby forming a nip between the fixation belt and the pressing member. The drive roller is configured to drive the fixation belt to rotate in the looped shape and thereby cause the auxiliary roller to rotate due to the frictional force from an inner peripheral surface of the rotating fixation belt. A friction coefficient of a contact surface of the auxiliary roller with the fixation belt is smaller than a friction coefficient of a contact surface of the drive roller with the fixation belt.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: September 8, 2015
    Assignee: Oki Data Corporation
    Inventor: Masato Sakai
  • Publication number: 20150136434
    Abstract: A holding fixture can securely fix a work implement, and does not become an obstacle when the work implement is carried or in used. The holding fixture 20 is provided with a flexible wire 21 which is attached in a housing hole 15 and movable in a length direction of the housing hole 15, wherein the housing hole 15 is a thin and long curved hole extending from the battery mounting unit 12 to the grip 11. One end of the wire 21 is separated from the electric torch 10, and a L-shaped hook 22 is anchored to said one end of the wire 21 as a hooking tool for fixing the electric torch 10 by its own weight. The worker pulls the hook 22 (wire 21) out of the housing hole 15 and can use the hook 22 for fixing the electric torch 10.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 21, 2015
    Inventors: Yoshiki AOKI, Masato SAKAI, Shinichi KAKEFUDA, Tetsuo EBATA
  • Patent number: D726142
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: April 7, 2015
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takafumi Itoh, Rui Akiba, Masanori Okada, Masato Sakai
  • Patent number: D735006
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: July 28, 2015
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshiki Aoki, Masato Sakai, Rui Akiba, Hiroki Uchida, Masanori Okada, Yoshihiro Komuro
  • Patent number: D744139
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: November 24, 2015
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takafumi Itoh, Masato Sakai, Masanori Okada
  • Patent number: D792708
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: July 25, 2017
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yuko Tazawa, Masato Sakai, Kenichi Yamada, Shuji Takeda
  • Patent number: D800526
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: October 24, 2017
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshiki Aoki, Masato Sakai
  • Patent number: D801145
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: October 31, 2017
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshiki Aoki, Masato Sakai