Patents by Inventor Hiroki Hamada

Hiroki Hamada 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: 7989088
    Abstract: A novel sub-structure of a thick film dielectric electroluminescent display and a thick film dielectric electroluminescent display incorporating the same is provided. The sub-structure comprises a barrier layer between a substrate and a thick film dielectric layer. The barrier layer is chemically inert with respect to the substrate and the thick film dielectric layer and the barrier layer inhibits diffusion of at least one chemical species therethrough. This sub-structure results in a higher capacitance for the thick dielectric layer, which provides higher display luminance and a reduced tendency for dielectric breakdown of the thick dielectric layer. The barrier layer permits for lower cost substrates, such as glass, to be used.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: August 2, 2011
    Assignees: iFire IP Corporation, Sanyo Electric Co., Ltd.
    Inventors: Hiroki Hamada, Isao Yoshida, Daniel J. Seale, Hui Zhang, Yang Maizhi, Ye Yufeng, Li Wu, M. Smy William
  • Patent number: 7915819
    Abstract: A novel laminate is provided to improve the operating stability of thioaluminate based phosphors used in ac thick film dielectric electroluminescent displays. The novel structure comprises a rare earth activated alkaline earth thioaluminate phosphor thin film layer and a magnesium oxide or magnesium oxide containing layer provided directly adjacent and in contact with the bottom of the phosphor thin film layer. The invention is particularly applicable to phosphors used in electroluminescent displays that employ thick dielectric layers subject to high processing temperatures to form and activate the phosphor films.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: March 29, 2011
    Assignees: iFire IP Corporation, Sanyo Electric Co., Ltd.
    Inventors: Isao Yoshida, Hiroki Hamada, Joe Acchione, Yongbao Xin, San Yu
  • Patent number: 7915803
    Abstract: A novel and improved composite thick film dielectric structure is provided to improve the operating stability of phosphors used in thick dielectric ac electroluminescent displays. The novel structure comprises one or more aluminum oxide layers disposed between the composite thick dielectric layer and the bottom of the phosphor layer of these displays.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: March 29, 2011
    Assignees: iFire IP Corporation, Sanyo Electric Co., Ltd.
    Inventors: Hiroki Hamada, Isao Yoshida, Vincent Joseph Alfred Pugliese, Manuela Peter, James Alexander Robert Stiles
  • Patent number: 7812522
    Abstract: A novel laminate is provided to improve the operating stability of thioaluminate based phosphors used in ac thick film dielectric electroluminescent displays. The novel structure comprises a rare earth activated alkaline earth thioaluminate phosphor thin film layer and an aluminum oxide or aluminum oxynitride layer provided directly adjacent and in contact with the bottom of the phosphor thin film layer. The invention is particularly applicable to phosphors used in electroluminescent displays that employ thick dielectric layers subject to high processing temperatures to form and activate the phosphor films.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: October 12, 2010
    Assignee: iFire IP Corporation
    Inventors: Yongbao Xin, Isao Yoshida, Joe Acchione, Hiroki Hamada
  • Publication number: 20100133989
    Abstract: An extended area uniform light source providing uniform luminance is taught for displays and other applications where the light emission can be planar or have curvature. The uniform light source is achieved using a combination of a blue light-emitting electroluminescent layer and a highly stable inorganic photoluminescent colour conversion layer to tailor the colour spectrum of the emitted light. The invention thus encompasses the uniform light source, displays incorporating the uniform light sources as well of methods of making such light sources and displays.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 3, 2010
    Applicants: IFIRE IP CORPORATION, SANYO ELECTRIC CO. LTD.
    Inventors: James Alexander Robert Stiles, Hiroki Hamada, Isao Yoshida
  • Patent number: 7597969
    Abstract: A thin film phosphor for an electroluminescent device, the phosphor being selected from the group consisting of thioaluminates, thiogallates and thioindates having at least one cation selected from elements of Groups IIA and IIB of the Periodic Table of Elements. The phosphor being activated by a rare earth metal and containing oxygen as a partial substitute for a portion of the sulphur in the crystal lattice of the thiogallate, thioindate or thioaluminate. The phosphor is a single phase homogeneous compound and provides improved luminance stability. An electroluminescent device comprising the thin film phosphor is also described and methods of making the phosphor of the invention.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: October 6, 2009
    Assignee: Ifire IP Corporation
    Inventors: James Alexander Robert Stiles, John Wesley Moore, Vincent Joseph Alfred Pugliese, Hiroki Hamada, Isao Yoshida
  • Publication number: 20080315762
    Abstract: A novel and improved composite thick film dielectric structure is provided to improve the operating stability of phosphors used in thick dielectric ac electroluminescent displays. The novel structure comprises one or more aluminum oxide layers disposed between the composite thick dielectric layer and the bottom of the phosphor layer of these displays.
    Type: Application
    Filed: April 25, 2008
    Publication date: December 25, 2008
    Applicants: IFIRE IP CORPORATION, SANYO ELECTRIC CO., LTD.
    Inventors: Hiroki Hamada, Isao Yoshida, Vincent Joseph Alfred Pugliese, Manuela Peter, James Alexander Robert Stiles
  • Publication number: 20070103069
    Abstract: The present invention is an electroluminescent display that incorporates a laminated seal that inhibits exposure of display components to atmospheric contaminants and to a sealing process for fabrication of the same. The sealed electroluminescent display comprises a substrate upon which is constructed a thick dielectric electroluminescent display covered by a laminated seal comprising a lower multi-functional polymer film and an upper inorganic film that provides a barrier layer to inhibit exposure of the electroluminescent display structure to an atmospheric contaminant.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 10, 2007
    Applicants: IFIRE TECHNOLOGY CORP., SANYO ELECTRIC CO., LTD.
    Inventors: Peter Manuela, Joseph Alfred Vincent, Yoshida Isao, Hiroki Hamada, Abe Hisashi
  • Publication number: 20070025995
    Abstract: To provide a taxoid derivative that has improved solubility in water and acts specifically with respect to tumors, thereby mitigating side effects. The present invention provides an anticancer agent comprises covalent bond compound of an antibody that reacts specifically with respect to cancer cells with a taxoid derivative and a method for preparing the anticancer agent according to claim 1, characterized by reacting, in the presence of reduction agent, an antibody that reacts specifically with respect to cancer cells with a reaction product obtained by allowing periodic acid or periodate to act on a taxoid derivative.
    Type: Application
    Filed: September 7, 2005
    Publication date: February 1, 2007
    Inventors: Hiroki Hamada, Katsuhiko Mikuni, Katsuyoshi Nakanishi, Tadakatsu Mandai
  • Publication number: 20060267484
    Abstract: A thin film phosphor for an electroluminescent device, the phosphor being selected from the group consisting of thioaluminates, thiogallates and thioindates having at least one cation selected from elements of Groups IIA and IIB of the Periodic Table of Elements. The phosphor being activated by a rare earth metal and containing oxygen as a partial substitute for a portion of the sulphur in the crystal lattice of the thiogallate, thioindate or thioaluminate. The phosphor is a single phase homogeneous compound and provides improved luminance stability. An electroluminescent device comprising the thin film phosphor is also described and methods of making the phosphor of the invention.
    Type: Application
    Filed: May 11, 2006
    Publication date: November 30, 2006
    Inventors: James Stiles, John Moore, Vincent Pugliese, Hiroki Hamada, Isao Yoshida
  • Publication number: 20060250082
    Abstract: A novel laminate is provided to improve the operating stability of thioaluminate based phosphors used in ac thick film dielectric electroluminescent displays. The novel structure comprises a rare earth activated alkaline earth thioaluminate phosphor thin film layer and a magnesium oxide or magnesium oxide containing layer provided directly adjacent and in contact with the bottom of the phosphor thin film layer. The invention is particularly applicable to phosphors used in electroluminescent displays that employ thick dielectric layers subject to high processing temperatures to form and activate the phosphor films.
    Type: Application
    Filed: April 13, 2006
    Publication date: November 9, 2006
    Inventors: Isao Yoshida, Hiroki Hamada, Joe Acchione, Yongbao Xin, San Yu
  • Patent number: 7112373
    Abstract: A thin film phosphor for an electroluminescent device, the phosphor being selected from the group consisting of thioaluminates, thiogallates and thioindates having at least one cation selected from elements of Groups IIA and IIB of the Periodic Table of Elements. The phosphor being activated by a rare earth metal and containing oxygen as a partial substitute for a portion of the sulphur in the crystal lattice of the thiogallate, thioindate or thioaluminate. The phosphor is a single phase homogeneous compound and provides improved luminance stability. An electroluminescent device comprising the thin film phosphor is also described and methods of making the phosphor of the invention.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: September 26, 2006
    Assignees: Sanyo Electric Co., Ltd., iFire Technology Inc.
    Inventors: James Alexander Robert Stiles, John Wesley Moore, Vincent Joseph Alfred Pugliese, Hiroki Hamada, Isao Yoshida
  • Publication number: 20060017381
    Abstract: A novel laminate is provided to improve the operating stability of thioaluminate based phosphors used in ac thick film dielectric electroluminescent displays. The novel structure comprises a rare earth activated alkaline earth thioaluminate phosphor thin film layer and an aluminum oxide or aluminum oxynitride layer provided directly adjacent and in contact with the bottom of the phosphor thin film layer. The invention is particularly applicable to phosphors used in electroluminescent displays that employ thick dielectric layers subject to high processing temperatures to form and activate the phosphor films.
    Type: Application
    Filed: July 19, 2005
    Publication date: January 26, 2006
    Inventors: Yongbao Xin, Isao Yoshida, Joe Acchione, Hiroki Hamada
  • Patent number: 6936959
    Abstract: A first molybdenum layer made of a molybdenum film, an aluminum conductive layer made of an aluminum-neodymium alloy film, a second molybdenum layer made of a molybdenum film and an insulating film layer made of a silicon dioxide film are stacked, in this order from the bottom to the top, on an insulating substrate made of glass.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: August 30, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hiroki Hamada, Daisuke Ide, Koji Suzuki
  • Patent number: 6917345
    Abstract: A small antenna comprises an antenna conductor, and a dielectric chip formed at surroundings of the antenna conductor by a plurality of resin moldings.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: July 12, 2005
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Hiroki Hamada, Yoshikazu Kamei, Masayuki Ishiwa, Isao Tomomatsu, Takahiro Ueno, Shinji Satoh
  • Patent number: 6905903
    Abstract: A display unit capable of inhibiting moisture and gas from penetrating into a liquid crystal layer and an alignment layer also after formation of a display electrode and suppressing decomposition of a material forming the display electrode is obtained. In this display unit, an impurity-introduced layer containing an impurity element having high electronegativity is formed on the surface of an insulator film and the surface of the display electrode after formation of the display electrode. Thus, the insulator film and the display electrode are improved in effects of preventing transmission of moisture and gas also after formation of the display electrode. The impurity-introduced layer formed on the surface of the display electrode stabilizes the surface of an ITO film forming the display electrode, thereby suppressing decomposition of the ITO film.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: June 14, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Isao Hasegawa, Hiroki Hamada, Daisuke Ide
  • Patent number: 6894646
    Abstract: A line-shaped comprises an antenna element in which a strip-shaped conductor is bent in a width direction of a strip, and a chamfered portion is provided on an outer edge of a bent portion of the strip-shaped conductor.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: May 17, 2005
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Takanori Washiro, Isao Tomomatsu, Hiroki Hamada, Shinji Satoh
  • Publication number: 20040170865
    Abstract: A novel sub-structure of a thick film dielectric electroluminescent display and a thick film dielectric electroluminescent display incorporating the same is provided. The sub-structure comprises a barrier layer between a substrate and a thick film dielectric layer. The barrier layer is chemically inert with respect to the substrate and the thick film dielectric layer and the barrier layer inhibits diffusion of at least one chemical species therethrough. This sub-structure results in a higher capacitance for the thick dielectric layer, which provides higher display luminance and a reduced tendency for dielectric breakdown of the thick dielectric layer. The barrier layer permits for lower cost substrates, such as glass, to be used.
    Type: Application
    Filed: December 15, 2003
    Publication date: September 2, 2004
    Inventors: Hiroki Hamada, Isao Yoshida, J. Seale Daniel, Hui Zhang, Yang Maizhi, Ye Yufeng, Li Wu, M. Smy William
  • Patent number: 6724347
    Abstract: Of margins of a resin molding with an antenna element buried therein which lie around the antenna element, a margin on that side of the resin molding where a gate mark remains is made larger than margins on other sides where there is no gate mark. Particularly, when the antenna element has a line antenna portion and a capacitance-adding portion provided at a distal end of the line antenna portion, the resin molding is injection-molded in such a way that a gate mark can be formed on that side where the capacitance-adding portion is located. Those portions of the resin molding where the terminal portions are led out are dented from levels of portions around those portions. This provides a chip antenna which has a simple structure with a high mechanical strength and does not prevent separation or cracking from occurring in the resin molding in which the antenna element is buried and a method of manufacturing the chip antenna.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: April 20, 2004
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Isao Tomomatsu, Takahiro Ueno, Mitsuo Yoshino, Shinji Satoh, Hiroki Hamada
  • Publication number: 20040031962
    Abstract: A display unit capable of inhibiting moisture and gas from penetrating into a liquid crystal layer and an alignment layer also after formation of a display electrode and suppressing decomposition of a material forming the display electrode is obtained. In this display unit, an impurity-introduced layer containing an impurity element having high electronegativity is formed on the surface of an insulator film and the surface of the display electrode after formation of the display electrode. Thus, the insulator film and the display electrode are improved in effects of preventing transmission of moisture and gas also after formation of the display electrode. The impurity-introduced layer formed on the surface of the display electrode stabilizes the surface of an ITO film forming the display electrode, thereby suppressing decomposition of the ITO film.
    Type: Application
    Filed: August 6, 2003
    Publication date: February 19, 2004
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Isao Hasegawa, Hiroki Hamada, Daisuke Ide