Patents by Inventor Kiyoshi Fujisawa

Kiyoshi Fujisawa 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).

  • Publication number: 20240101307
    Abstract: A replacement lead case includes a case body that forms an inner space surrounded by a rear surface plate and right and left leg plates as a replacement lead accommodation room and has a lid body on the tip end thereof and a case part on a rear part thereof via a bendable thin part provided on the rear surface plate, and a cover member that has a U-shaped cross-section orthogonal to a longitudinal direction molded by a front surface plate and right and left outer leg plates covers the replacement lead accommodation room on a case body with the front surface plate and slidably supports the case body in the longitudinal direction with the leg plates positioned on the inside of the outer leg plates. A rail-shaped guide is formed on the lid body along the longitudinal direction, and the cover member includes a slider that contacts the guide.
    Type: Application
    Filed: December 16, 2021
    Publication date: March 28, 2024
    Applicant: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Mitsuhiro KAWABATA, Kyoichiro NAKAMURA, Kiyoshi FUJISAWA
  • Patent number: 11112892
    Abstract: A stylus pen is disclosed with which coordinate information can be inputted accurately and whose operability can be improved. A stylus pen for inputting information by bringing a screen contacting portion into contact with a capacitive touch screen includes a barrel, a holder made of nonconductive material attached to a front end of the barrel, a screen contacting portion formed of conductive material and attached to a front end of the holder, and a connecting member made of conductive material that is disposed in the holder and has a resilient action along the axial direction and that conducts electricity when a front end portion of the connecting member comes into contact with the screen contacting portion. An outer diameter, perpendicular to the axial direction, of the connecting member is set to be smaller than an outer diameter, perpendicular to the axial direction, of the screen contacting portion.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: September 7, 2021
    Assignee: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Kiyoshi Fujisawa, Masashi Sakagami, Atsunori Satake
  • Publication number: 20210072848
    Abstract: A stylus pen is disclosed with which coordinate information can be inputted accurately and whose operability can be improved. A stylus pen for inputting information by bringing a screen contacting portion into contact with a capacitive touch screen includes a barrel, a holder made of nonconductive material attached to a front end of the barrel, a screen contacting portion formed of conductive material and attached to a front end of the holder, and a connecting member made of conductive material that is disposed in the holder and has a resilient action along the axial direction and that conducts electricity when a front end portion of the connecting member comes into contact with the screen contacting portion. An outer diameter, perpendicular to the axial direction, of the connecting member is set to be smaller than an outer diameter, perpendicular to the axial direction, of the screen contacting portion.
    Type: Application
    Filed: December 12, 2018
    Publication date: March 11, 2021
    Applicant: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Kiyoshi Fujisawa, Masashi Sakagami, Atsunori Satake
  • Patent number: 10023756
    Abstract: Provided is a solid drawing material containing at least a resin, waxes, a pigment and an extender, wherein it further contains at least one selected from dibasic acids having 12 to 30 carbon atoms and derivatives thereof, and the resin is at least one selected from rosin and modified products thereof, terpene resins and modified products thereof, petroleum resins, maleic acid resins and derivatives thereof, coumarone.indene resins and derivatives thereof, and isoprene base resins. The solid drawing material can draw smoothly, darkly and finely pictures not only on smooth and non-absorbing surfaces of art paper, coated paper, milk packs, plastics such as PET, metal, glass, white boards, and the like, but also on eyebrows, lips, skins and the like as well as ordinary papers such as wood free paper, drawing paper and copier paper and which can readily be erased from the non-absorbing surfaces.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: July 17, 2018
    Assignee: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Huyen Nguyen Thi Thanh, Tatsuya Murata, Motohiro Kasai, Katsunori Kitazawa, Masaaki Matsumoto, Kiyoshi Fujisawa, Kiyohiko Kobayashi, Yumi Morooka
  • Publication number: 20170051173
    Abstract: Provided is a solid drawing material containing at least a resin, waxes, a pigment and an extender, wherein it further contains at least one selected from dibasic acids having 12 to 30 carbon atoms and derivatives thereof, and the resin is at least one selected from rosin and modified products thereof, terpene resins and modified products thereof, petroleum resins, maleic acid resins and derivatives thereof, coumarone.indene resins and derivatives thereof, and isoprene base resins. The solid drawing material can draw smoothly, darkly and finely pictures not only on smooth and non-absorbing surfaces of art paper, coated paper, milk packs, plastics such as PET, metal, glass, white boards, and the like, but also on eyebrows, lips, skins and the like as well as ordinary papers such as wood free paper, drawing paper and copier paper and which can readily be erased from the non-absorbing surfaces.
    Type: Application
    Filed: April 22, 2015
    Publication date: February 23, 2017
    Applicant: Mitsubishi Pencil Company, Limited
    Inventors: Huyen Nguyen Thi Thanh, Tatsuya Murata, Motohiro Kasai, Katsunori Kitazawa, Masaaki Matsumoto, Kiyoshi Fujisawa, Kiyohiko Kobayashi, Yumi Morooka
  • Publication number: 20150317950
    Abstract: It is an object of the present invention to make full use of energy stored in storage capacitors connected in parallel to display pixels and prevent variations of display performance and easily adjust the display without replacing the storage capacitors. Storage capacitors 25 that can store charge to continuously move electrophoretic particles in a direction corresponding to a drive voltage for a time longer than a reference frame period even after a drive voltage is turned off by one selection are provided in parallel to respective display pixels (20), pause periods are provided in scan line units or in group units made up of a plurality of continuous scan lines and pause periods are provided so that a scanning interval of each scan line unit is shorter than a time within which the storage capacitors (25) can move electrophoretic particles even after the drive voltage is turned off.
    Type: Application
    Filed: October 24, 2013
    Publication date: November 5, 2015
    Applicant: MITSUBISHI PENCIL CO., LTD.
    Inventors: Masashi Sakagami, Kiyoshi Fujisawa
  • Patent number: 8435698
    Abstract: A fuel container 1 comprises: a container main body 2 in which a liquid fuel 4 is housed and fuel exhausting ports 24 and 31 to exhaust the liquid fuel 4 to the outside is formed; a following auxiliary member 71 which is solid, and situated on an end side of the liquid fuel 4 in the container main body 2, the following auxiliary member 71 moving to the sides of the fuel exhausting ports 24 and 31 as the liquid fuel 4 is exhausted; and a following body 5 situated on the end side of the liquid fuel 4, and packed in a space formed by an inner peripheral surface of the container main body 2 and an outer peripheral surface of the following auxiliary member 71, the following body 5 moving to the fuel exhausting ports 24 and 31 as the liquid fuel 4 is exhausted. Then, at least one of the inner peripheral surface of the container main body 2 and the outer peripheral surface of the following auxiliary member 71, which are faced to each other, is made to be uneven.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: May 7, 2013
    Assignees: Casio Computer Co., Ltd., Mitsubishi Pencil Co., Ltd.
    Inventors: Yugo Matsuda, Yasunari Kabasawa, Toshimi Kamitani, Kiyoshi Fujisawa
  • Patent number: 7951504
    Abstract: Provided is a fuel cartridge in which a follower is prevented from being deformed and from separating even when heavy vibration is exerted onto the fuel cartridge. The fuel cartridge is detachably connected with a fuel cell main body and assumes a construction in which the fuel cartridge is equipped with a fuel-storing vessel for storing a liquid fuel, a fuel discharge part, and a follower which seals the liquid fuel and moves as the liquid fuel is consumed at a rear end part of the liquid fuel. The follower is provided with a follower auxiliary member and a cap member both of which have no fluidity and are insoluble in the liquid fuel.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: May 31, 2011
    Assignees: Mitsubishi Pencil Company, Limited, Casio Computer Co., Ltd.
    Inventors: Kiyoshi Fujisawa, Toshimi Kamitani, Yasunari Kabasawa, Yugo Matsuda
  • Patent number: 7909901
    Abstract: A liquid cartridge includes a vessel body for containing liquid. The vessel body includes a plurality of surfaces. An oxygen outlet is provided on one surface among the plurality of surfaces of the vessel body. And an oxygen input is provided on a surface other than a furthest surface from the surface on which the oxygen outlet is provided among the plurality of surfaces of the vessel body.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: March 22, 2011
    Assignees: Casio Computer Co., Ltd., Mitsubishi Pencil Co., Ltd.
    Inventors: Yasunari Kabasawa, Toshimi Kamitani, Kiyoshi Fujisawa
  • Publication number: 20100230833
    Abstract: A liquid cartridge comprises a vessel body for containing liquid, the vessel body comprising a plurality of surfaces, an oxygen outlet provided on one surface among the plurality of surfaces of the vessel body, and an oxygen input provided on a surface other than a furthest surface from the surface on which the oxygen outlet is formed among the plurality of surfaces of the vessel body.
    Type: Application
    Filed: March 20, 2007
    Publication date: September 16, 2010
    Applicants: Casio Computer Co., Ltd., Mitsubishi Pencil Co., Ltd.
    Inventors: Yasunari Kabasawa, Toshimi Kamitani, Kiyoshi Fujisawa
  • Publication number: 20100012568
    Abstract: Provided is a fuel cartridge in which a liquid fuel is not lost in storage, in which a follower is prevented from being deformed and separating even when heavy vibration is exerted onto the fuel cartridge to make it possible to stably supply the liquid fuel directly to a fuel cell main body, in which in particular, even when a volume of a liquid fuel is big and a cartridge diameter is large, the liquid fuel can stably be supplied directly to a fuel cell main body and which is suited to a small-sized fuel cell.
    Type: Application
    Filed: May 29, 2007
    Publication date: January 21, 2010
    Applicants: MITSUBISHI PENCIL COMPANY, LIMITED, CASIO COMPUTER CO., LTD.
    Inventors: Kiyoshi Fujisawa, Toshimi Kamitani, Yasunari Kabasawa, Yugo Matsuda
  • Publication number: 20090130531
    Abstract: A fuel container 1 comprises: a container main body 2 in which a liquid fuel 4 is housed and fuel exhausting ports 24 and 31 to exhaust the liquid fuel 4 to the outside is formed; a following auxiliary member 71 which is solid, and situated on an end side of the liquid fuel 4 in the container main body 2, the following auxiliary member 71 moving to the sides of the fuel exhausting ports 24 and 31 as the liquid fuel 4 is exhausted; and a following body 5 situated on the end side of the liquid fuel 4, and packed in a space formed by an inner peripheral surface of the container main body 2 and an outer peripheral surface of the following auxiliary member 71, the following body 5 moving to the fuel exhausting ports 24 and 31 as the liquid fuel 4 is exhausted. Then, at least one of the inner peripheral surface of the container main body 2 and the outer peripheral surface of the following auxiliary member 71, which are faced to each other, is made to be uneven.
    Type: Application
    Filed: March 22, 2007
    Publication date: May 21, 2009
    Inventors: Yugo Matsuda, Yasunari Kabasawa, Toshimi Kamitani, Kiyoshi Fujisawa
  • Patent number: 7381004
    Abstract: A gas-pressurized writing instrument simply constructed so that a compressed gas will not escape to the outside by providing a writing point assembly (10) at the front end (14a) of a tube member (14), storing an ink (12) to be fed to the writing point assembly (10) in the tube member (14), encasing at least part of the tube member (10) by a casing cylinder (18) so as to form a space (16) communicating with the rear opening of tube member (14), and sealing a compressed gas inside the space (16) so that the compressed gas will push the ink out to writing point assembly (10) to secure the writing performance, wherein the casing cylinder (18) is formed of a material that presents low gas permeability or gas impermeability.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: June 3, 2008
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Kazuhiko Furukawa, Kiyoshi Fujisawa
  • Patent number: 7325992
    Abstract: A gas-pressurized writing instrument simply constructed so that a compressed gas will not escape to the outside by providing a writing point assembly (10) at the front end (14a) of a tube member (14), storing an ink (12) to be fed to the writing point assembly (10) in the tube member (14), encasing at least part of the tube member (10) by a casing cylinder (18) formed of a material that presents low gas permeability or gas impermeability so as to form a space (16) communicating with the rear opening of tube member (14), sealing a compressed gas inside the space (16) so that the compressed gas will push the ink out to writing point assembly (10) to secure the writing performance, and covering the outer periphery of the casing cylinder (18) with an exterior member having thermal resistance or/and moisture resistance greater than that of the casing cylinder so that the casing cylinder can present low gas permeability or gas impermeability.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: February 5, 2008
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Kazuhiko Furukawa, Kiyoshi Fujisawa
  • Patent number: 7303351
    Abstract: A writing point assembly and an ink tube and/or a holder can be welded appropriately at a predetermined area without using ultrasonic waves, so as to be able to prevent dislodging of the writing point assembly, ink leakage and the like. The rear end part, of a metallic writing point assembly as a part of a writing instrument, is inserted into a joint, and is heated at the predetermined area (at least the fitted area in contact with the front end part of the joint), so as to weld the predetermined area of the writing point assembly to the surrounding part of the joint.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: December 4, 2007
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Kazuhiko Furukawa, Kiyoshi Fujisawa, Yoshihide Ishii, Daisen Kato
  • Patent number: 6926458
    Abstract: For producing a pressurized ball-point pen refill the ball-point pen refill includes a tip, an ink storage tube and a tail plug, wherein ink is filled in the space of the ink storage tube relatively near to the tip, and a pressuring gas is filled in the space of the ink storage tube relatively far from the tip. The tip includes a ball and a holder, and the ball is formed to have a surface roughness (Ra) of 0.010 ?m to 0.080 ?m. The holder has a ball house and an ink guiding groove, and the ball house has a side part and a bottom part. Moreover, a formula 1.01??B/?A ?1.11 is satisfied when ?A is the diameter of the ball, and ?B is the inner diameter of the side part of the ball house.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: August 9, 2005
    Assignee: Mitsubishi Pencil Kabushikikaisha
    Inventors: Takayuki Maki, Kiyoshi Fujisawa
  • Publication number: 20050117960
    Abstract: A gas-pressurized writing instrument simply constructed so that a compressed gas will not escape to the outside by providing a writing point assembly (10) at the front end (14a) of a tube member (14), storing an ink (12) to be fed to the writing point assembly (10) in the tube member (14), encasing at least part of the tube member (10) by a casing cylinder (18) so as to form a space (16) communicating with the rear opening of tube member (14), and sealing a compressed gas inside the space (16) so that the compressed gas will push the ink out to writing point assembly (10) to secure the writing performance, wherein the casing cylinder (18) is formed of a material that presents low gas permeability or gas impermeability.
    Type: Application
    Filed: January 30, 2003
    Publication date: June 2, 2005
    Inventors: Kazuhiko Furukawa, Kiyoshi Fujisawa
  • Patent number: 6881802
    Abstract: A catalyst obtained by contacting a specific transition metal compound (A) of Group 7 of the Periodic Table of the Elements, having a pyrazolyl group with an aluminum compound selected from organoaluminums and aluminoxanes and/or a specific boron compound, and a process for producing an addition polymer which comprises polymerizing an addition polymerizable monomer with the catalyst.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: April 19, 2005
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kiyoshi Fujisawa, Masaaki Nabika
  • Publication number: 20050079001
    Abstract: A gas-pressurized writing instrument simply constructed so that a compressed gas will not escape to the outside by providing a writing point assembly (10) at the front end (14a) of a tube member (14), storing an ink (12) to be fed to the writing point assembly (10) in the tube member (14), encasing at least part of the tube member (10) by a casing cylinder (18) formed of a material that presents low gas permeability or gas impermeability so as to form a space (16) communicating with the rear opening of tube member (14), sealing a compressed gas inside the space (16) so that the compressed gas will push the ink out to writing point assembly (10) to secure the writing performance, and covering the outer periphery of the casing cylinder (18) with an exterior member having thermal resistance or/and moisture resistance greater than that of the casing cylinder so that the casing cylinder can present low gas permeability or gas impermeability.
    Type: Application
    Filed: January 30, 2003
    Publication date: April 14, 2005
    Applicant: mitsubishi pencil kabushiki kaisha
    Inventors: Kazuhiko Furukawa, Kiyoshi Fujisawa
  • Publication number: 20050074274
    Abstract: The object is to provide a writing instrument and a welding method of a writing point assembly as well as writing instrument parts connecting structure and connecting method, wherein the writing point assembly and an ink tube or/and a holder can be welded appropriately at a necessary area only without using ultrasonic waves, so as to be able to prevent dislodging of the writing point assembly, ink leakage and the like. The rear end part, of a metallic writing point assembly as a part of a writing instrument, which is inserted into a joint, is heated at the predetermined area (at least the fitted area in contact with the front end part of the joint), so as to weld the predetermined area of the writing point assembly to the surrounding part of the joint.
    Type: Application
    Filed: January 30, 2003
    Publication date: April 7, 2005
    Inventors: Kazuhiko Furukawa, Kiyoshi Fujisawa, Yoshihide Ishii, Daisen Kato