Patents by Inventor Kozo Ogawa

Kozo Ogawa 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: 10421261
    Abstract: A flame-retardant epoxy resin composition wherein (A) epoxy resin, (B) a curing agent and (C) a phosphorous-containing compound expressed by the following general formula (1) are contained; a prepreg using the same and a laminated plate using said prepreg; wherein m expresses an integer from 2 to 10, R1 and R2 each independently express an alkyl group or an aryl group, R3 expresses a hydrocarbon group that may contain an oxygen atom, a sulfur atom or a nitrogen atom, X expresses an oxygen atom or a sulfur atom, Y expresses an oxygen atom, a sulfur atom or —NR4—, and in this regard, R4 expresses a hydrogen atom, an alkyl group or an aryl group.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: September 24, 2019
    Assignee: ADEKA CORPORATION
    Inventors: Takeshi Endo, Kozo Matsumoto, Ken-ichi Tamaso, Chihiro Asakura, Ryo Ogawa
  • Publication number: 20150241033
    Abstract: According to one embodiment, a lamp apparatus includes a housing, a light-emitting module, a lens and a cover. The housing includes a concave part and a support part protruding into the concave part from an inner peripheral surface of the concave part. The light-emitting module includes a light-emitting element and a board on which the light-emitting element is mounted, and is disposed in the concave part. The lens includes a flange part located at a peripheral part and arranged on the support part, and is arranged in the concave part. The cover holds the flange part of the lens between itself and the support part and is attached to the housing.
    Type: Application
    Filed: September 18, 2014
    Publication date: August 27, 2015
    Applicant: Toshiba Lighting & Technology Corporation
    Inventors: Takayoshi Kurita, Kozo Ogawa, Yusuke Shibahara, Hiroshi Takenaga
  • Patent number: 8998457
    Abstract: A self-ballasted lamp includes: a base body; a light-emitting module and a globe which are provided at one end side of the base body; a cap provided at the other end side of the base body; and a lighting circuit housed between the base body and the cap. The light-emitting module has light-emitting portions each using a semiconductor light-emitting element, and a support portion projected at one end side of the base body, and the light-emitting portions are disposed at least on a circumferential surface of the support portion. A light-transmissive member is interposed between the light-emitting module and an inner face of the globe.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 7, 2015
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Makoto Sakai, Masao Segawa, Nobuo Shibano, Kiyoshi Nishimura, Kozo Ogawa, Masahiko Kamata, Toshiya Tanaka, Miho Watanabe, Shuhei Matsuda
  • Patent number: 8963190
    Abstract: A light-emitting device includes a substrate having a front surface on which a semiconductor light-emitting element is mounted. A front cover is provided which thermally contacts the front surface of the substrate at a periphery of the semiconductor light-emitting element and is disposed on a front side of the substrate. A heat conduction path is formed along which heat generated by the semiconductor light-emitting element is conducted in order of the substrate and the front cover and the heat is radiated from a front surface of the front cover, so that a heat radiation property from a front surface of the light-emitting device is improved.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: February 24, 2015
    Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha Toshiba
    Inventors: Ryotaro Matsuda, Kozo Ogawa, Makoto Sakai, Akiko Takahashi, Keiichi Shimizu, Kiyoshi Nishimura
  • Patent number: 8899795
    Abstract: In a lamp device 12 using a GX53-type cap 31 and also using an LED 56 as a light source, there is regulated an appropriate configuration of a metallic cover 32. A cap 31 and a lighting device 36 are arranged on an upper surface side of the metallic cover 32, and a substrate 33 on which the LED 56 is mounted is arranged on a lower surface side thereof. The metallic cover 32 has an approximately cylindrical shape with a maximum outer diameter D of 80 to 150 mm, a height H of 5 to 25 mm, and 2? (D/2) H/W, that is, an area of the outer peripheral surface per gross input power W to the lamp device 12 being in a range of 200 to 800 mm2/W. The gross input power W is 5 to 20 W.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: December 2, 2014
    Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha Toshiba
    Inventors: Toshiya Tanaka, Keiichi Shimizu, Takumi Suwa, Makoto Sakai, Kozo Ogawa, Sigeru Osawa, Takeshi Hisayasu, Hitoshi Kawano
  • Patent number: 8901848
    Abstract: The present invention comprises a lighting apparatus main body having a reflecting surface, a main light source arranged in the reflecting surface of the lighting apparatus main body, a sub-light source which is arranged at the lighting apparatus main body and illuminates the neighborhood of the main light source directly, and a control circuit which controls the main light source and the sub-light source. Since the lighting apparatus illuminates downward with a direct illumination of the main light source and an indirect illumination of the sub-light source, the glare of the main light source is reduced.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: December 2, 2014
    Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Watanabe, Keiichi Shimizu, Kozo Ogawa, Erika Takenaka, Akimichi Takahashi, Shinji Nogi, Shinichi Kumashiro
  • Patent number: 8872198
    Abstract: According to one embodiment, the light-emitting apparatus is provided with a substrate, a plurality of light-emitting devices, and a phosphor layer. The plurality of light-emitting devices are mounted on the substrate. The phosphor layer is formed of a translucent resin containing a phosphor and includes a phosphor portion that is formed in a convex shape and covers a predetermined number of the light-emitting device. Bases of the adjacent phosphor portions are formed by being linked with one another.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: October 28, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Soichi Shibusawa, Kiyoshi Nishimura, Kozo Ogawa, Nobuhiko Betsuda, Shuhei Matsuda, Masatoshi Kumagai
  • Patent number: 8816381
    Abstract: According to one embodiment, a light-emitting device includes a substrate, a plurality of pads and a plurality of light-emitting elements. The pads has electric conductance, and are arranged on the substrate. A reflecting layer which is formed by electroplating is provided on a surface of each of the pads. The light-emitting elements are mounted on the pads. A depressed part is left on the substrate. The depressed part is formed on the substrate by removing a pattern on the substrate, by which the pads are electrically connected.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: August 26, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Nobuhiko Betsuda, Kozo Ogawa, Koyoshi Nishimura, Soichi Shibusawa
  • Patent number: 8740422
    Abstract: In a bulb and a luminaire according to one embodiment, plural fins for thermal radiation are provided on the outer circumferential surface of a main body in which a lighting circuit is attached, a light-emitting module is attached to a module attaching section integrated with the front of the main body, and a cylindrical section that surrounds the light-emitting module is protrudingly provided on a light extracting side.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: June 3, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Toshiya Tanaka, Kozo Ogawa, Yoshihiro Nomura, Kunihiko Ikada
  • Publication number: 20140145590
    Abstract: A self-ballasted lamp includes: a base body; a light-emitting module and a globe which are provided at one end side of the base body; a cap provided at the other end side of the base body; and a lighting circuit housed between the base body and the cap. The light-emitting module has light-emitting portions each using a semiconductor light-emitting element, and a support portion projected at one end side of the base body, and the light-emitting portions are disposed at least on a circumferential surface of the support portion. A light-transmissive member is interposed between the light-emitting module and an inner face of the globe.
    Type: Application
    Filed: January 31, 2014
    Publication date: May 29, 2014
    Applicant: Toshiba Lighting & Technology Corporation
    Inventors: Makoto SAKAI, Masao SEGAWA, Nobuo SHIBANO, Kiyoshi NISHIMURA, Kozo OGAWA, Masahiko KAMATA, Toshiya TANAKA, Miho WATANABE, Shuhei MATSUDA
  • Patent number: 8690392
    Abstract: The light source unit is provided with a substrate and a decorative cover having thermal conductivity. The substrate includes a circuit pattern area, in which a plurality of LED chips are disposed, at the middle part thereof, has thermal conductivity, and transmits heat from the circuit pattern area to an area in the outer circumferential direction thereof. The decorative cover encloses the substrate, is electrically insulated from the circuit pattern area, and is thermally coupled to the surface side of the substrate at the periphery of the circuit pattern area by being face-contacted thereto. Heat of the substrate can be radiated by the decorative cover while securing an electric insulation property with respect to the circuit pattern area.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: April 8, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Kozo Ogawa, Kiyoshi Nishimura, Nobuhiko Betsuda, Hiroki Tamai, Akiko Saito
  • Patent number: 8678618
    Abstract: A self-ballasted lamp includes: a base body; a light-emitting module and a globe which are provided at one end side of the base body; a cap provided at the other end side of the base body; and a lighting circuit housed between the base body and the cap. The light-emitting module has light-emitting portions each using a semiconductor light-emitting element, and a support portion projected at one end side of the base body, and the light-emitting portions are disposed at least on a circumferential surface of the support portion. A light-transmissive member is interposed between the light-emitting module and an inner face of the globe.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: March 25, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Makoto Sakai, Masao Segawa, Nobuo Shibano, Kiyoshi Nishimura, Kozo Ogawa, Masahiko Kamata, Toshiya Tanaka, Miho Watanabe, Shuhei Matsuda
  • Patent number: 8632212
    Abstract: According to one embodiment, a light-emitting device comprises a substrate on which a plurality of light-emitting elements are arranged and mounted in two lines; and sealing members of two lines each sealing the plurality of light-emitting elements of each line. A distance between the lines of the sealing members is equal to 0.5 times or more but 2 times or less a width of the sealing member of each line.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: January 21, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Soichi Shibusawa, Kozo Ogawa, Kiyoshi Nishimura, Nobuhiko Betsuda
  • Patent number: 8616732
    Abstract: According to one embodiment, a light-emitting device comprises a substrate on a surface of which a light-emitting element is mounted, a light reflection layer formed on a second area of the surface of the substrate other than a first area on which the light-emitting element is mounted, and a sealing member sealing the light-emitting element. An engagement protrusion part protruding toward the sealing member is provided at an edge part of the light reflection layer at which the light reflection layer is in contact with the area on which the light-emitting element is mounted. The engagement protrusion part juts out into the sealing member to prevent exfoliation of the sealing member.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: December 31, 2013
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Soichi Shibusawa, Kozo Ogawa, Kiyoshi Nishimura, Nobuhiko Betsuda
  • Patent number: 8500298
    Abstract: According to one embodiment, a lighting fixture includes a fixture body and a plurality of light-emitting modules. A plurality of light-emitting module arrangement portions are formed on the surface of the fixture body. The light-emitting modules are arranged on the light-emitting module arrangement portions of the fixture body and annularly arranged so that a space is formed at the center area of the fixture body. Semiconductor light-emitting elements are disposed on the surface of the light-emitting module, and a wiring connector is arranged at the space side of the substrate.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: August 6, 2013
    Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha Toshiba
    Inventors: Kozo Ogawa, Kazunari Higuchi, Shigetoshi Komiyama, Takayoshi Moriyama, Shinichi Kumashiro
  • Publication number: 20130114253
    Abstract: A bulb-type lamp includes a base body, a heat pipe, a light-emitting body, a cap and a lighting circuit. One end side of the heat pipe protrudes from one end side of the base body, and the other end side of the heat pipe is connected to the one end side of the base body. The light-emitting body includes plural LED elements, is connected to the one end side of the heat pipe, and is attached to the heat pipe to enable heat conduction. The cap is provided at the other end side of the base body. The lighting circuit is housed in the base body.
    Type: Application
    Filed: January 12, 2011
    Publication date: May 9, 2013
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Masao Segawa, Nobuo Shibano, Nobuhiko Betsuda, Kiyoshi Nishimura, Kozo Ogawa
  • Publication number: 20130100683
    Abstract: In a bulb and a luminaire according to one embodiment, plural fins for thermal radiation are provided on the outer circumferential surface of a main body in which a lighting circuit is attached, a light-emitting module is attached to a module attaching section integrated with the front of the main body, and a cylindrical section that surrounds the light-emitting module is protrudingly provided on a light extracting side.
    Type: Application
    Filed: August 30, 2012
    Publication date: April 25, 2013
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Toshiya TANAKA, Kozo OGAWA, Yoshihiro NOMURA, Kunihiko IKADA
  • Patent number: 8414164
    Abstract: A spotlight is provided with a substrate having LEDs disposed thereon and a main body casing on which the substrate is provided. The main body casing has a rear side portion having thermal conductivity, which is thermally coupled to the substrate, and is capable of changing the irradiation angle of light emitted from the LEDs. A plurality of heat-radiating fins for forming grooves operating as a plurality of convection paths along the direction of changing the irradiation angle are provided on the rear side portion of the main body casing.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: April 9, 2013
    Inventors: Kozo Ogawa, Aiko Takahashi, Nobuhiko Betsuda, Hiroki Tamai, Kiyoshi Nishimura, Akiko Saito, Ryotaro Matsuda
  • Patent number: 8408724
    Abstract: A light source module includes a module substrate, a metal conductor, a plurality of semiconductor light emitting elements, a white diffuse reflection layer, and translucent sealing members. The metal conductor is provided in a predetermined pattern on a front surface of the module substrate. The semiconductor light emitting elements are electrically connected to the metal conductor and mounted on the front surface of the module substrate. The white diffuse reflection layer includes a plurality of holes in which the semiconductor light emitting elements are located, is thinner than the semiconductor light emitting elements, and is laminated to the front surface of the module substrate. The translucent sealing members bury the semiconductor light emitting elements, project below the diffuse reflection layer, and are mixed with a phosphor.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: April 2, 2013
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Kozo Ogawa, Yusuke Shibahara, Kiyoshi Nishimura, Seiko Kawashima, Tsuyoshi Oyaizu, Haruki Takei
  • Publication number: 20120224372
    Abstract: The light source unit is provided with a substrate and a decorative cover having thermal conductivity. The substrate includes a circuit pattern area, in which a plurality of LED chips are disposed, at the middle part thereof, has thermal conductivity, and transmits heat from the circuit pattern area to an area in the outer circumferential direction thereof. The decorative cover encloses the substrate, is electrically insulated from the circuit pattern area, and is thermally coupled to the surface side of the substrate at the periphery of the circuit pattern area by being face-contacted thereto. Heat of the substrate can be radiated by the decorative cover while securing an electric insulation property with respect to the circuit pattern area.
    Type: Application
    Filed: May 14, 2012
    Publication date: September 6, 2012
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Kozo Ogawa, Kyoshi Nishimura, Nobuhiko Betsuda, Hiroki Tamai, Akiko Saito