Patents by Inventor Katsuo Koizumi

Katsuo Koizumi 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: 10541086
    Abstract: A laminated ceramic capacitor has a capacitor body of roughly a rectangular solid shape defined by the length, width, and height, as well as a concaved part formed at and along the edges of one side and the other side in the height direction. An external electrode has a base conductor layer whose height-direction wrap-around part is formed inside the concaved part, and a main conductor layer whose height-direction wrap-around part is formed continuously over the height-direction wrap-around part of the base conductor layer through the planar part, except for the concaved part, of one side and the other side of the component body in the height direction. The height-direction wrap-around part of the main conductor layer has a planar connecting area constituted by a surface area over the height-direction wrap-around part of the base conductor layer and a surface area over the planar part of the component body.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 21, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yoshiaki Iijima, Sou Satou, Yasutomo Suga, Katsuo Koizumi
  • Publication number: 20160233027
    Abstract: A laminated ceramic capacitor has a capacitor body of roughly a rectangular solid shape defined by the length, width, and height, as well as a concaved part formed at and along the edges of one side and the other side in the height direction. An external electrode has a base conductor layer whose height-direction wrap-around part is formed inside the concaved part, and a main conductor layer whose height-direction wrap-around part is formed continuously over the height-direction wrap-around part of the base conductor layer through the planar part, except for the concaved part, of one side and the other side of the component body in the height direction. The height-direction wrap-around part of the main conductor layer has a planar connecting area constituted by a surface area over the height-direction wrap-around part of the base conductor layer and a surface area over the planar part of the component body.
    Type: Application
    Filed: December 2, 2015
    Publication date: August 11, 2016
    Inventors: Yoshiaki IIJIMA, Sou SATOU, Yasutomo SUGA, Katsuo KOIZUMI
  • Patent number: 8139341
    Abstract: A film capacitor comprises a wound body, a first terminal part electrically connected to one end of the wound body, and a second terminal part electrically connected to the other end of the wound body. The wound body is structured by winding into a laminate a first film laminate formed of a laminate of dielectric films and having therein a floating electrode and a second film laminate formed of a laminate of first and second metal films sandwiching the first film laminate and dielectric films and having therein a floating electrode (22). Each of the floating electrodes (22) is composed of integrated small electrodes independent of each other.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: March 20, 2012
    Assignee: Soshin Electric Co., Ltd.
    Inventors: Yoshikuni Kato, Katsuo Koizumi, Kanji Machida
  • Patent number: 7929271
    Abstract: A first electrode pattern comprises a first lead-out electrode portion extending continuously along the longitudinal direction of a first dielectric film, a plurality of first capacitor electrode portions each extending from the first lead-out electrode portion almost perpendicularly to the first lead-out electrode portion, and second capacitor electrode portions which are disposed between the first capacitor electrode portions and connected thereto. The second capacitor electrode portions each have a plurality of first sections. Each first section is connected to one end surface and the other end surface extending along the width direction of the first dielectric film of the first capacitor electrode portions through a narrow first fuse portion.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: April 19, 2011
    Assignee: Soshin Electric Co., Ltd.
    Inventors: Yoshikuni Kato, Katsuo Koizumi, Kanji Machida
  • Publication number: 20090246672
    Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.
    Type: Application
    Filed: April 24, 2008
    Publication date: October 1, 2009
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomoko Ishikawa, Yuqing Xu, Katsuo Koizumi, Noriaki Takahashi, Osamu Ando
  • Publication number: 20090185326
    Abstract: A film capacitor comprises a wound body, a first terminal part electrically connected to one end of the wound body, and a second terminal part electrically connected to the other end of the wound body. The wound body is structured by winding into a laminate a first film laminate formed of a laminate of dielectric films and having therein a floating electrode and a second film laminate formed of a laminate of first and second metal films sandwiching the first film laminate and dielectric films and having therein a floating electrode. Each of the floating electrodes is composed of integrated small electrodes independent of each other.
    Type: Application
    Filed: May 30, 2007
    Publication date: July 23, 2009
    Applicant: Soshin Electric Co. Ltd
    Inventors: Yoshikuni Kato, Katsuo Koizumi, Kanji Machida
  • Publication number: 20090086402
    Abstract: A first electrode pattern comprises a first lead-out electrode portion extending continuously along the longitudinal direction of a first dielectric film, a plurality of first capacitor electrode portions each extending from the first lead-out electrode portion almost perpendicularly to the first lead-out electrode portion, and second capacitor electrode portions which are disposed between the first capacitor electrode portions and connected thereto. The second capacitor electrode portions each has have a plurality of first sections. Each first section is connected to one end surface and the other end surface extending along the width direction of the first dielectric film of the first capacitor electrode portions through a narrow first fuse portion.
    Type: Application
    Filed: April 26, 2007
    Publication date: April 2, 2009
    Applicant: Soshin Electric Co., Ltd.
    Inventors: Yoshikuni Kato, Katsuo Koizumi, Kanji Machida
  • Publication number: 20070065744
    Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.
    Type: Application
    Filed: April 10, 2006
    Publication date: March 22, 2007
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomoko Ishikawa, Yuqing Xu, Katsuo Koizumi, Noriaki Takahashi, Osamu Ando
  • Patent number: 7169526
    Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: January 30, 2007
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomoko Ishikawa, Yuqing Xu, Katsuo Koizumi, Noriaki Takahashi, Osamu Ando
  • Patent number: 6727792
    Abstract: A wire wound electronic component of the present invention includes a bobbin having a core 1a having a substantially circular cross-section and rectangular flanges 1b formed at both ends of the core. A groove 2 is formed in each side of each flange 1b. A conductive film or external electrode 3 is formed on each flange 1b. A coil or wire 4 is wound round the core 1a and has a conductor protruding from opposite stripped ends thereof. The opposite ends 5 of the conductor are respectively received in the grooves 2 of the flanges 1b and connected to the conductive films 3. A coating or armor 6 is formed on the coil 4 and has a flat surface 6a. The coating 6 has a rectangular configuration complementary to the configuration of the flanges 1b.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: April 27, 2004
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
  • Publication number: 20020190832
    Abstract: A wire wound electronic component of the present invention includes a bobbin having a core 1a having a substantially circular cross-section and rectangular flanges 1b formed at both ends of the core. A groove 2 is formed in each side of each flange 1b. A conductive film or external electrode 3 is formed on each flange 1b. A coil or wire 4 is wound round the core 1a and has a conductor protruding from opposite stripped ends thereof. The opposite ends 5 of the conductor are respectively received in the grooves 2 of the flanges 1b and connected to the conductive films 3. A coating or armor 6 is formed on the coil 4 and has a flat surface 6a. The coating 6 has a rectangular configuration complementary to the configuration of the flanges 1b.
    Type: Application
    Filed: August 28, 2002
    Publication date: December 19, 2002
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
  • Patent number: 6449830
    Abstract: A wire wound electronic component includes a bobbin having a core 1a having a substantially circular cross-section and rectangular flanges 1b formed at both ends of the core. A groove 2 is formed in each side of each flange 1b. A conductive film or external electrode 3 is formed on each flange 1b. A coil or wire 4 is wound round the core 1a and has a conductor protruding from opposite stripped ends thereof. The opposite ends 5 of the conductor are respectively received in the grooves 2 of the flanges 1b and connected to the conductive films 3. A coating or armor 6 is formed on the coil 4 and has a flat surface 6a. The coating 6 has a rectangular configuration complementary to the configuration of the flanges 1b.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: September 17, 2002
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
  • Publication number: 20010033982
    Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.
    Type: Application
    Filed: December 18, 2000
    Publication date: October 25, 2001
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Tomoko Ishikawa, Yuqing Xu, Katsuo Koizumi, Noriaki Takahashi, Osamu Ando
  • Patent number: 6144280
    Abstract: A wire wound electronic component of the present invention includes a bobbin having a core 1a having a substantially circular cross-section and rectangular flanges 1b formed at both ends of the core. A groove 2 is formed in each side of each flange 1b. A conductive film or external electrode 3 is formed on each flange 1b. A coil or wire 4 is wound round the core 1a and has a conductor protruding from opposite stripped ends thereof. The opposite ends 5 of the conductor are respectively received in the grooves 2 of the flanges 1b and connected to the conductive films 3. A coating or armor 6 is formed on the coil 4 and has a flat surface 6a. The coating 6 has a rectangular figuration complementary to the configuration of the flanges 1b.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: November 7, 2000
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
  • Patent number: 5360691
    Abstract: A carrier for developing electrostatic latent images is disclosed, which comprises a core material at least a part of which is coated with a resin containing a copolymer comprised of vinylidene chloride and at least one monomer having an unsaturated double bond and being copolymerizable with vinylidene chloride, wherein the copolymer is comprised of (a) from 70 to 30 mol % of vinylidene chloride, (b) from 20 to 60 mol % of acrylonitrile and/or an acrylonitrile derivative, and (c) from 0 to 40 mol % of a monomer having an unsaturated double bond and being copolymerizable with components (a) and (b). An electrophotographic developer containing the carrier and an electrophotographic developing process using the developer are also disclosed.
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: November 1, 1994
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Katsuo Koizumi, Shigenori Otsuka, Syuuichi Maeda, Hiromi Horiuchi, Hirofumi Oda, Toshiyuki Sueyoshi
  • Patent number: 4442878
    Abstract: A hand-held power tool, such as an electric planer or the like, comprises a mechanism for moving or forwarding the body of the tool in a straight hand path. The mechanism includes a rotary wheel or a plate attached to the tool body so that the rotary wheel or plate contacts the surface of a work piece when the tool body is placed thereon. The rotary wheel or the plate is made of a material having a high friction coefficient. A plurality of parallel grooves are formed on the surface of the rotary wheel or so that a high degree of friction occurs between the surface thereof and the surface of the work piece should the body move in a direction other than a given direction on the surface of the work piece. The rotary wheel or plate is biased toward the work piece with the biasing force applied to the rotary wheel being variable.
    Type: Grant
    Filed: August 4, 1981
    Date of Patent: April 17, 1984
    Assignee: Hitachi Koki Company, Limited
    Inventors: Seki Moriguchi, Katsuo Koizumi, Sueji Nagayama