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).
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Patent number: 10541086Abstract: 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: GrantFiled: December 2, 2015Date of Patent: January 21, 2020Assignee: TAIYO YUDEN CO., LTD.Inventors: Yoshiaki Iijima, Sou Satou, Yasutomo Suga, Katsuo Koizumi
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Publication number: 20160233027Abstract: 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: ApplicationFiled: December 2, 2015Publication date: August 11, 2016Inventors: Yoshiaki IIJIMA, Sou SATOU, Yasutomo SUGA, Katsuo KOIZUMI
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Patent number: 8139341Abstract: 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: GrantFiled: May 30, 2007Date of Patent: March 20, 2012Assignee: Soshin Electric Co., Ltd.Inventors: Yoshikuni Kato, Katsuo Koizumi, Kanji Machida
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Patent number: 7929271Abstract: 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: GrantFiled: April 26, 2007Date of Patent: April 19, 2011Assignee: Soshin Electric Co., Ltd.Inventors: Yoshikuni Kato, Katsuo Koizumi, Kanji Machida
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Publication number: 20090246672Abstract: 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: ApplicationFiled: April 24, 2008Publication date: October 1, 2009Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Tomoko Ishikawa, Yuqing Xu, Katsuo Koizumi, Noriaki Takahashi, Osamu Ando
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Publication number: 20090185326Abstract: 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: ApplicationFiled: May 30, 2007Publication date: July 23, 2009Applicant: Soshin Electric Co. LtdInventors: Yoshikuni Kato, Katsuo Koizumi, Kanji Machida
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Publication number: 20090086402Abstract: 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: ApplicationFiled: April 26, 2007Publication date: April 2, 2009Applicant: Soshin Electric Co., Ltd.Inventors: Yoshikuni Kato, Katsuo Koizumi, Kanji Machida
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Publication number: 20070065744Abstract: 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: ApplicationFiled: April 10, 2006Publication date: March 22, 2007Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Tomoko Ishikawa, Yuqing Xu, Katsuo Koizumi, Noriaki Takahashi, Osamu Ando
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Patent number: 7169526Abstract: 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: GrantFiled: December 18, 2000Date of Patent: January 30, 2007Assignee: Mitsubishi Chemical CorporationInventors: Tomoko Ishikawa, Yuqing Xu, Katsuo Koizumi, Noriaki Takahashi, Osamu Ando
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Patent number: 6727792Abstract: 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: GrantFiled: August 28, 2002Date of Patent: April 27, 2004Assignee: Taiyo Yuden Co., Ltd.Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
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Publication number: 20020190832Abstract: 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: ApplicationFiled: August 28, 2002Publication date: December 19, 2002Applicant: TAIYO YUDEN CO., LTD.Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
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Patent number: 6449830Abstract: 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: GrantFiled: September 19, 2000Date of Patent: September 17, 2002Assignee: Taiyo Yuden Co., Ltd.Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
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Publication number: 20010033982Abstract: 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: ApplicationFiled: December 18, 2000Publication date: October 25, 2001Applicant: Mitsubishi Chemical CorporationInventors: Tomoko Ishikawa, Yuqing Xu, Katsuo Koizumi, Noriaki Takahashi, Osamu Ando
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Patent number: 6144280Abstract: 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: GrantFiled: November 10, 1997Date of Patent: November 7, 2000Assignee: Taiyo Yuden Co., Ltd.Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
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Patent number: 5360691Abstract: 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: GrantFiled: May 7, 1992Date of Patent: November 1, 1994Assignee: Mitsubishi Kasei CorporationInventors: Katsuo Koizumi, Shigenori Otsuka, Syuuichi Maeda, Hiromi Horiuchi, Hirofumi Oda, Toshiyuki Sueyoshi
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Patent number: 4442878Abstract: 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: GrantFiled: August 4, 1981Date of Patent: April 17, 1984Assignee: Hitachi Koki Company, LimitedInventors: Seki Moriguchi, Katsuo Koizumi, Sueji Nagayama