Patents by Inventor Takashi Naitou
Takashi Naitou 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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Publication number: 20060063009Abstract: The present invention is envisioned to provide a high-strength glass which is applicable to the objective of size and weight reduction. A compression stress layer is formed in a surface portion of an oxide-based glass containing at least one rare earth element selected from the group consisting of Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu and further containing at least Si element and an alkali metal element.Type: ApplicationFiled: August 17, 2005Publication date: March 23, 2006Inventors: Takashi Naitou, Motoyuki Miyata, Hiroyuki Akata, Yuichi Sawai, Osamu Shiono, Tatsumi Hirano, Hiroki Yamamoto, Hideto Momose, Takao Miwa, Yuzo Kozono
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Publication number: 20060063006Abstract: The present invention is envisioned to provide a high-strength glass which is applicable to the objective of size and weight reduction. A layer containing a rare earth element in a high concentration is formed at a glass portion close to a surface (superficial portion) which is shallow in depth from an outermost surface of the glass which contains a rare earth element.Type: ApplicationFiled: September 13, 2005Publication date: March 23, 2006Inventors: Takashi Naitou, Motoyuki Miyata, Hiroyuki Akata, Yuichi Sawai, Osamu Shiono, Tatsumi Hirano, Hiroki Yamamoto, Hideto Momose, Takao Miwa, Yuzo Kozono
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Patent number: 6933601Abstract: A semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate, a plurality of electrodes having different areas provided on the insulator substrate, one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element, a metal wiring connecting the elements, a metal terminal part of part of the metal wiring and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion.Type: GrantFiled: July 12, 2002Date of Patent: August 23, 2005Assignee: Hitachi, Ltd.Inventors: Toshiya Satoh, Masahiko Ogino, Takao Miwa, Takashi Naitou, Takashi Namekawa
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Patent number: 6870983Abstract: An optical switch, in which focal position of beams is adjusted to provide a high switching efficiency and a high stability in action without increasing a light source output of a control light, comprising a condensing means for making a signal light and a control light convergent and incident upon a nonlinear optical thin-film and wherein irradiation of the control light causes a change of the nonlinear optical thin-film in refractive index to thereby change the signal light into a transmitted light or a reflected light to take out the same as an output signal.Type: GrantFiled: May 29, 2003Date of Patent: March 22, 2005Assignee: Hitachi, Ltd.Inventors: Hideto Momose, Yuuichi Sawai, Mitsutoshi Honda, Takashi Naitou, Hiroyuki Akata, Tsukasa Ookawa
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Publication number: 20050047146Abstract: It is an object of the present invention to provide a reflector made of heat-resistant glass. It is another object of the present invention to provide a projective display which uses the reflector. A projector device having: a light source emitting white light; a reflector reflecting a light emitted from the light source; a light valve modulating illumination beam of light; and a projective lens projecting image light from the light valve, wherein the reflector is made of a glass containing SiO2 as a major ingredient and at least one rare-earth element selected from the group consisting of Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and the glass has a thermal expansion coefficient lower than 40×10?7/° C. and a transition temperature higher than 500° C.Type: ApplicationFiled: August 18, 2004Publication date: March 3, 2005Inventors: Motoyuki Miyata, Masahiko Yatsu, Hiroyuki Akata, Masaharu Deguchi, Katsuyuki Watanabe, Takashi Naitou, Koji Hirata
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Publication number: 20040246692Abstract: Through an improvement of module size increase due to mounting a single passive element on a substrate and an increase in the mounting cost, to provide a highly reliable, high performance and small sized electronic circuit component which permits to integrate a variety of electronic parts such as capacitors, inductors and resistors in a high density with low cost.Type: ApplicationFiled: July 13, 2004Publication date: December 9, 2004Inventors: Toshiya Satoh, Masahiko Ogino, Takao Miwa, Takashi Naitou, Takashi Namekawa, Toshihide Nabatame, Shigehisa Motowaki
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Publication number: 20040238941Abstract: Through an improvement of module size increase due to mounting a single passive element on a substrate and an increase in the mounting cost, to provide a highly reliable, high performance and small sized semiconductor connection substrate which permits to integrate a variety of electronic parts such as capacitors, inductors and resistors in a high density with low cost.Type: ApplicationFiled: January 12, 2004Publication date: December 2, 2004Inventors: Toshiya Satoh, Masahiko Ogino, Takao Miwa, Takashi Naitou, Takashi Namekawa
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Publication number: 20040230376Abstract: In estimating a traveling speed pattern on the basis of the past traveling data, the present invention aims at making it possible to efficiently estimate the traveling speed pattern without referring to an enormous volume of the past traveling data, and preventing the precision of estimation from deteriorating due to a decrease in the number of the available past data. To achieve this object, a vehicle traveling speed pattern estimation device of the present invention comprises traveling information storing means for storing traveling data and traveling environment data as mutually associated data, candidate traveling speed pattern generating means for generating a candidate traveling speed pattern on the basis of the traveling data, and estimated traveling speed pattern outputting means for extracting a candidate traveling speed pattern matching current traveling environment data and outputting an estimated traveling speed pattern for a route to be followed from now on.Type: ApplicationFiled: March 1, 2004Publication date: November 18, 2004Inventors: Shinji Ichikawa, Yukikazu Koide, Shinji Doki, Shigeru Okuma, Nobuaki Miki, Takashi Naitou
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Patent number: 6784538Abstract: The present invention is a semiconductor apparatus having at least a part of a semiconductor device conjugated to a metal material for heat sink via an electric insulating material, wherein said electric insulating material is a bismuth glass layer.Type: GrantFiled: July 30, 2002Date of Patent: August 31, 2004Assignee: Hitachi, Ltd.Inventors: Takayoshi Nakamura, Ryuichi Saito, Akihiro Tamba, Takashi Naitou, Hiroki Yamamoto, Takashi Namekawa
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Publication number: 20040157449Abstract: An electrode device for an electric field emission electron source suitable for duty drive having an element size of 50 &mgr;m or smaller and an electrode device fabricating method. A glass film used as catalyst of forming carbon nanotubes is formed on a substrate to form metal catalyst at nano meter level and control dispersion. Carbon nanotubes are dispersively formed on the metal catalyst and a metal coat is formed on the surface of carbon nanotubes to improve electric pulse response characteristics.Type: ApplicationFiled: February 6, 2004Publication date: August 12, 2004Inventors: Kishio Hidaka, Yoshimichi Numata, Mitsuo Hayashibara, Mitsutoshi Honda, Takashi Naitou, Hideyo Kodama
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Patent number: 6768193Abstract: The present invention is a semiconductor apparatus having at least a part of a semiconductor device conjugated to a metal material for heat sink via an electric insulating material, wherein said electric insulating material is a bismuth glass layer.Type: GrantFiled: March 18, 2002Date of Patent: July 27, 2004Assignee: Hitachi, Ltd.Inventors: Takayoshi Nakamura, Ryuichi Saito, Akihiro Tamba, Takashi Naitou, Hiroki Yamamoto, Takashi Namekawa
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Patent number: 6749955Abstract: An ultra-high density information recording media has an inorganic compound layer 12 on a substrate 11, and in the inorganic compound layer 12, an oxide of at least one kind selected from silicon oxide, aluminum oxide, titanium oxide, tantalum oxide, and zinc oxide exists in an amorphous state at a grain boundary of crystal grain of an oxide of at least one kind selected from cobalt oxide, iron oxide, and nickel oxide. The media has a magnetic layer 13 made of an artificial lattice multilayer obtained by alternately laminating a Co layer or an alloy layer consisting of Co as a main phase and a metal element layer of at least one kind selected from Pt and Pd onto the layer 12. Thus, a distribution of magnetic properties serving as a pinning site of the movement of a magnetic wall in case of recording information to the magnetic layer 13 is formed in the magnetic layer 13.Type: GrantFiled: January 23, 2003Date of Patent: June 15, 2004Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd.Inventors: Fumiyoshi Kirino, Nobuyuki Inaba, Hiroki Yamamoto, Takashi Naitou, Ken Takahashi, Eiji Koyama, Motoyasu Terao, Sumio Hosaka, Hiroki Kuramoto
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Patent number: 6746749Abstract: The magnetic recording medium includes an underlayer 12 formed of an inorganic compound layer, and a magnetic layer 13 formed over the underlayer 12. The inorganic compound layer as the underlayer 12 has crystal grains and at least one kind of oxide, the crystal grains having as main elements at least one of cobalt oxide, chromium oxide, iron oxide and nickel, the at least one kind of oxide lying as a non-crystalline phase in grain boundaries between the crystal grains and selected from among silicon oxide, aluminum oxide, titanium oxide, tantalum oxide and zinc oxide.Type: GrantFiled: August 29, 2002Date of Patent: June 8, 2004Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd.Inventors: Fumiyoshi Kirino, Nobuyuki Inaba, Hiroki Yamamoto, Ken Takahashi, Takashi Naitou, Motoyasu Terao, Sumio Hosaka, Eiji Koyama, Hiroki Kuramoto
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Publication number: 20040105612Abstract: An optical switch, in which focal position of beams is adjusted to provide a high switching efficiency and a high stability in action without increasing a light source output of a control light, comprising a condensing means for making a signal light and a control light convergent and incident upon a nonlinear optical thin-film and wherein irradiation of the control light causes a change of the nonlinear optical thin-film in refractive index to thereby change the signal light into a transmitted light or a reflected light to take out the same as an output signal.Type: ApplicationFiled: May 29, 2003Publication date: June 3, 2004Applicant: Hitachi, Ltd.Inventors: Hideto Momose, Yuuichi Sawai, Mitsutoshi Honda, Takashi Naitou, Hiroyuki Akata, Tsukasa Ookawa
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Patent number: 6734087Abstract: An electrode device for an electric field emission electron source suitable for duty drive having an element size of 50 &mgr;m or smaller and an electrode device fabricating method. A glass film used as catalyst of forming carbon nanotubes is formed on a substrate to form metal catalyst at nano meter level and control dispersion. Carbon nanotubes are dispersively formed on the metal catalyst and a metal coat is formed on the surface of carbon nanotubes to improve electric pulse response characteristics.Type: GrantFiled: November 6, 2002Date of Patent: May 11, 2004Assignee: Hitachi, Ltd.Inventors: Kishio Hidaka, Yoshimichi Numata, Mitsuo Hayashibara, Mitsutoshi Honda, Takashi Naitou, Hideyo Komada
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Publication number: 20040085882Abstract: An optical information recording medium includes a recording layer for recording optical information, a plurality of laminated layers, and a substrate for supporting those layers, while a beam of a specific wavelength is being radiated, a light absorption peak is shifted to a longer or a shorter wavelength side than the peak located before said beam radiation, realizing a high S/N ratio and a high recording density of the medium.Type: ApplicationFiled: August 15, 2003Publication date: May 6, 2004Applicant: Hitachi, Ltd.Inventors: Hiroki Yamamoto, Takashi Naitou
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Publication number: 20030221718Abstract: The object of this invention is to provide a solar cell apparatus which can prevent occurrences of peeling, warping and cracking of a film due to a temperature change in heating and cooling, etc. in a production process of a large-area solar cell panel and can cause an absence of a development of defects in the production process, a production method of the solar cell apparatus, a metal plate for the solar cell apparatus, and a power generating plant. According to this invention, there is provided a solar cell apparatus containing a metal substrate, two silicon layers, one of the two silicon layers being formed in contact with a part of one surface of the metal substrate, a plurality of electrodes formed in contact with the other of the silicon layers, an external terminal formed on the other surface of the metal substrate, and an external terminal formed in contact with the electrode.Type: ApplicationFiled: September 20, 2002Publication date: December 4, 2003Inventors: Masaharu Kubo, Takashi Naitou, Mutsuhiro Mori, Mutsuko Hatano, Yuichi Sawai
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Publication number: 20030134154Abstract: An ultra-high density information recording media has an inorganic compound layer 12 on a substrate 11, and in the inorganic compound layer 12, an oxide of at least one kind selected from silicon oxide, aluminum oxide, titanium oxide, tantalum oxide, and zinc oxide exists in an amorphous state at a grain boundary of crystal grain of an oxide of at least one kind selected from cobalt oxide, iron oxide, and nickel oxide. The media has a magnetic layer 13 made of an artificial lattice multilayer obtained by alternately laminating a Co layer or an alloy layer consisting of Co as a main phase and a metal element layer of at least one kind selected from Pt and Pd onto the layer 12. Thus, a distribution of magnetic properties serving as a pinning site of the movement of a magnetic wall in case of recording information to the magnetic layer 13 is formed in the magnetic layer 13.Type: ApplicationFiled: January 23, 2003Publication date: July 17, 2003Applicant: HITACHI, LTD.Inventors: Fumiyoshi Kirino, Nobuyuki Inaba, Hiroki Yamamoto, Takashi Naitou, Ken Takahashi, Eiji Koyama, Motoyasu Terao, Sumio Hosaka, Hiroki Kuramoto
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Publication number: 20030087511Abstract: An electrode device for an electric field emission electron source suitable for duty drive having an element size of 50 &mgr;m or smaller and an electrode device fabricating method. A glass film used as catalyst of forming carbon nanotubes is formed on a substrate to form metal catalyst at nano meter level and control dispersion. Carbon nanotubes are dispersively formed on the metal catalyst and a metal coat is formed on the surface of carbon nanotubes to improve electric pulse response characteristics.Type: ApplicationFiled: November 6, 2002Publication date: May 8, 2003Inventors: Kishio Hidaka, Yoshimichi Numata, Mitsuo Hayashibara, Mitsutoshi Honda, Takashi Naitou, Hideyo Kodama
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Patent number: 6534206Abstract: A magneto-optical storage apparatus including an ultra-high density information recording media having an inorganic compound layer 12 on a substrate 11, and in the inorganic compound layer 12, an oxide of at least one kind selected from silicon oxide, aluminum oxide, titanium oxide, tantalum oxide, and zinc oxide exists in an amorphous state at a grain boundary of crystal grain of an oxide of at least one kind selected from cobalt oxide, iron oxide, and nickel oxide. The media has a magnetic layer 13 made of an artificial lattice multilayer obtained by alternately laminating a Co layer or an alloy layer consisting of Co as a main phase and a metal element layer of at least one kind selected from Pt and Pd onto the layer 12. Thus, a distribution of magnetic properties serving as a pinning site of the movement of a magnetic wall in case of recording information to the magnetic layer 13 is formed in the magnetic layer 13.Type: GrantFiled: June 27, 2000Date of Patent: March 18, 2003Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd.Inventors: Fumiyoshi Kirino, Nobuyuki Inaba, Hiroki Yamamoto, Takashi Naitou, Ken Takahashi, Eiji Koyama, Motoyasu Terao, Sumio Hosaka, Hiroki Kuramoto