Patents by Inventor Tatsumi Hioki
Tatsumi Hioki 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: 20170341990Abstract: A problem to be solved is to provide a method for processing zirconia without producing a monoclinic crystal. The solution is a method for processing zirconia, including the step of irradiating the zirconia with a laser with a pulse duration of 10?12 seconds to 10?15 seconds at an intensity of 1013 to 1015 W/cm2.Type: ApplicationFiled: August 10, 2015Publication date: November 30, 2017Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Osamu KOMEDA, Takuya KONDO, Toshiyuki KAWASHIMA, Hirofumi KAN, Nakahiro SATOH, Takashi SEKINE, Takashi KURITA, Atsushi SUNAHARA, Tomoyoshi MOTOHIRO, Tatsumi HIOKI, Hirozumi AZUMA, Shigeki OHSHIMA, Tsutomu KAJINO, Yoneyoshi KITAGAWA, Yoshitaka MORI, Katsuhiro ISHII, Ryohei HANAYAMA, Yasuhiko NISHIMURA, Eisuke MIURA
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Patent number: 9363882Abstract: An object is to be capable of inducing a nuclear fusion reaction at a relatively high efficiency and downsize a device. A nuclear fusion device 1 of the present invention includes a nuclear fusion target 7 including a target substrate 7a containing deuterium or tritium and a thin-film layer 7b containing deuterium or tritium stacked on the target substrate 7a, a vacuum container 5 for storing the nuclear fusion target 7, and a laser unit 3 for irradiating two successive first and second pulsed laser lights P1, P2 toward the thin-film layer 7b of the nuclear fusion target 7, and the intensity of the first pulsed laser light P1 is set to a value that is smaller than that of the second pulsed laser light P2 and allows peeling of the thin-film layer 7b from the target substrate 7a.Type: GrantFiled: December 15, 2010Date of Patent: June 7, 2016Assignees: HAMAMATSU PHOTONICS K.K., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi Sekine, Toshiyuki Kawashima, Hirofumi Kan, Yoneyoshi Kitagawa, Yoshitaka Mori, Hirozumi Azuma, Tatsumi Hioki, Tomoyoshi Motohiro, Yasushi Miyamoto, Naoki Nakamura
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Publication number: 20120307950Abstract: An object is to be capable of inducing a nuclear fusion reaction at a relatively high efficiency and downsize a device. A nuclear fusion device 1 of the present invention includes a nuclear fusion target 7 including a target substrate 7a containing deuterium or tritium and a thin-film layer 7b containing deuterium or tritium stacked on the target substrate 7a, a vacuum container 5 for storing the nuclear fusion target 7, and a laser unit 3 for irradiating two successive first and second pulsed laser lights P1, P2 toward the thin-film layer 7b of the nuclear fusion target 7, and the intensity of the first pulsed laser light P1 is set to a value that is smaller than that of the second pulsed laser light P2 and allows peeling of the thin-film layer 7b from the target substrate 7a.Type: ApplicationFiled: December 15, 2010Publication date: December 6, 2012Applicants: Toyota Jidosha Kabushiki Kaisha, Hamamatsu Photonics K.K.Inventors: Takashi Sekine, Toshiyuki Kawashima, Hirofumi Kan, Yoneyoshi Kitagawa, Yoshitaka Mori, Hirozumi Azuma, Tatsumi Hioki, Tomoyoshi Motohiro, Yasushi Miyamoto, Naoki Nakamura
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Patent number: 7026058Abstract: A multilayered hydrogen absorbing body is provided which is formed by laminating at least two types of hydrogen absorbing materials. The degrees of strains cause due to absorption/desorption of hydrogen are different between the hydrogen absorbing materials adjacent to each other.Type: GrantFiled: July 22, 2003Date of Patent: April 11, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shin-ichi Towata, Masakazu Aoki, Tatsumi Hioki, Akio Itoh, Akihiko Koiwai, Toshihiro Mouri, Katsushi Saito
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Publication number: 20040110023Abstract: A multilayered hydrogen absorbing body is provided which is formed by laminating at least two types of hydrogen absorbing materials. The degrees of strains cause due to absorption/desorption of hydrogen are different between the hydrogen absorbing materials adjacent to each other.Type: ApplicationFiled: July 22, 2003Publication date: June 10, 2004Applicant: Toyota Jidosha Kabushiki KaishaInventors: Shin-Ichi Towata, Masakazu Aoki, Tatsumi Hioki, Akio Itoh, Akihiko Koiwai, Toshihiro Mouri, Katsushi Saito
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Patent number: 6107243Abstract: The present cluster-included material characterized by utilizing a porous host material for clusters having a pore larger in size than that of zeolite. The cluster-included material is obtained by forming a cluster in a pore of a mesoporous material having a pore size of 1.3 to 10 nm. When the mesoporous material is particularly a mesoporous material having a pore volume of not less than 60% of a total pore volume within a pore size range of -40 to +40% of a pore size which shows a maximum peak in a pore size distribution curve, a granular cluster having a uniform particle size or a fine-linear cluster having a uniform diameter is obtained. The cluster-included material performs the various quantum effects.Type: GrantFiled: September 9, 1997Date of Patent: August 22, 2000Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Shinji Inagaki, Noriaki Sugimoto, Tatsumi Hioki, Yoshiaki Fukushima, Masaru Ichikawa
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Patent number: 6087042Abstract: Disclosed is a positive electrode material for a secondary lithium battery excellent in high temperature cycle characteristics which is a lithium manganese oxyfluoride having a spinel structure, wherein the oxyfluoride has a composition represented by the composition formula:Li.sub.1+x Mn.sub.2-x O.sub.4-y F.sub.zwherein x represents a number of from 0.0133 to 0.3333; y represents a number of from 0 to 0.2 (exclusive of 0); and z represents a number of from 0.01 to 0.2 (exclusive of 0.01), with the proviso that (y-z) is more than 0 but not more than 0.07. The positive electrode material for a secondary lithium battery of the present invention exhibits not only a high cycle durability of charge/discharge but also a minimum drop of a charge/discharge initial capacity to provide a high energy density.Type: GrantFiled: February 23, 1999Date of Patent: July 11, 2000Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Jun Sugiyama, Tsuyoshi Sasaki, Tatsuya Hatanaka, Tatsuo Noritake, Tatsumi Hioki
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Patent number: 5958577Abstract: The method for producing a bulk silica porous material is presented. The obtained material has a large crystal size serving to reduce light scattering, and uniform and adjustable pore size. This can be utilized for optical and electronic functional materials. The method comprises the steps of:forming a silica/surfactant composite by mixing starting materials containing an alkoxysilane, water and a surfactant and allowing to the starting materials to react;maturing said silica/surfactant composite by allowing the same to stand in a closed container to effect the development of a silica network structure and the formation of porous structure in said composite;drying said matured silica/surfactant composite for removing the solvent and for condensation of said matured silica/surfactant composite; and,sintering said condensed silica/surfactant composite to remove the surfactant to obtain a silica porous material.Type: GrantFiled: January 6, 1998Date of Patent: September 28, 1999Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Noriaki Sugimoto, Shinji Inagaki, Yoshiaki Fukushima, Tatsumi Hioki, Makoto Ogawa
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Patent number: 5932354Abstract: By providing a normally deposited layer as a buffer layer between a substrate and an obliquely deposited layer, it is possible to prevent contaminants on the substrate from diffusing into the obliquely deposited layer. Also, by providing a normally deposited layer as a passivation layer on the uppermost obliquely deposited layer, absorption of water vapor in the air by the obliquely deposited layer is prevented. Further, by forming a laminated object comprising obliquely deposited layers and dense normally deposited layers, strength of each obliquely deposited layer itself is increased and relaxation of its columnar structure can be suppressed with certainty because both the diffusion of contaminants from the substrate and the absorption of water in the air is prevented. Thus, by removing factors to accelerate the relaxation of columnar structure in the obliquely deposited layer, clouding of the obliquely deposited film layer can be prevented.Type: GrantFiled: July 11, 1997Date of Patent: August 3, 1999Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Nikon CorporationInventors: Yasuhiko Takeda, Tomoyoshi Motohiro, Tatsumi Hioki, Shoji Noda, Mikio Okamoto, Hiroshi Niikura
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Patent number: 5907426Abstract: A device for stabilizing a modulation operation of an optical modulator is provided, the optical modulator having an optical waveguide provided on a substrate and an electrode provided so as to correspond to the optical waveguide, modulating light inputted to the optical waveguide by a voltage corresponding to a physical amount to be measured which is inputted to the electrode, and outputting the modulated light. The device includes: an optical detecting device for outputting signal corresponding to intensity of light outputted from the optical modulator; a control signal outputting device for, on the basis of the output signal of the optical detecting device, outputting a control signal which compensates a phase bias fluctuation of the optical modulator; a light source device for outputting control light corresponding to the control signal; and a voltage applying device, provided in contact with the electrode of the optical modulator, for applying voltage corresponding to the control light to the electrode.Type: GrantFiled: June 27, 1997Date of Patent: May 25, 1999Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Naohiko Kato, Hiroshi Ito, Tadashi Ichikawa, Tomoyoshi Motohiro, Tatsumi Hioki
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Patent number: 5627920Abstract: An optical-optical modulator (10) has a substrate (1) made of Zcut-LiNbO.sub.3 and a Ti-diffused waveguide (2) thereon. The waveguide (2) is separated into two branches which merge later into one again and constitute the Mach-Zehnder interferometer. A pair of electrodes (3a, 3b) for phase modulation is formed on a modulation part (A) which is in the middle of the waveguide (2). A CdS.sub.x Te.sub.1-x photoelectric conversion film (6) is formed directly contacting the pair of electrodes (3a, 3b). The photoelectric film (6) is manufactured by oblique vapor deposition utilizing CdS and CdTe as two vapor deposition sources. When the photoelectric conversion film 6 receives a control light (Lc), the film (6) generates voltage. The generated voltage is applied to the pair of electrodes (3a, 3b) and becomes a modulation signal of the carrier light (La).Type: GrantFiled: May 22, 1995Date of Patent: May 6, 1997Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Naohiko Kato, Tadashi Ichikawa, Hiroshi Ito, Tomoyoshi Motohiro, Tatsumi Hioki
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Patent number: 5516214Abstract: The outer surface of a rolling element (3) of a rolling bearing is coated with a lubricating film (4) having three layers (5, 6, 7). The bottommost layer (5) coated on the surface of the rolling element (3) is made of Sn; the intermediate layer (6) coated on the surface of the bottommost layer (5) is made of Ag; and the topmost layer (7) coated on the surface of the intermediate layer (6) is made of Pb. As a result of this construction, Ag serves as a binder between the Pb-Sn alloy and steel constituting an inner race member (1), an outer race member (2) and/or the rolling element (3), which in turn renders the lubricating film (4) wettable with respect to the surfaces of the inner and outer race members (1, 2) defining a race and the outer surface of the rolling element (3). Hence, stable lubrication between the bearing components can be implemented.Type: GrantFiled: December 22, 1994Date of Patent: May 14, 1996Assignee: Koyo Seiko Co., Ltd.Inventors: Kenichi Kakumoto, Hiroaki Takebayashi, Yoshiki Fujii, Tatsumi Hioki, Hirozumi Azuma
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Patent number: 5266398Abstract: An amorphous thin film as a solid lubricant having a low coefficient of friction. It is composed of silicon (Si), oxygen (O), carbon (C), and hydrogen (H), and has a composition defined by the formula: Si.sub.x (O.sub.m, C.sub.n, H.sub.l-m-n).sub.1-x where, x=0.03-0.02, m=0.05-0.5, =0.1-0.9, and 0.6.ltoreq.m+n.ltoreq.0.95. This thin film exhibits extremely low friction stably from the beginning of sliding. It has superior wear resistance owing to its high hardness.Type: GrantFiled: September 17, 1992Date of Patent: November 30, 1993Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Tatsumi Hioki, Kazuyuki Oguri
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Patent number: 5215823Abstract: In a process for forming a solid lubricating film on an iron-base substrate, an organic material having a vapor pressure of 10.sup.-4 Torr or less at room temperature is deposited on an iron-base alloy substrate in a vacuum atmosphere in a vacuum degree of 10.sup.-4 Torr or more, and simultaneously ions of a metal element having a chemical affinity to carbon is irradiated on the iron-base alloy substrate at a dose of 1.times.10.sup.16 ions/cm.sup.2 or more, the ions having an energy of 5 keV or more. Accordingly, the iron-base substrate is coated with a solid lubricating film which includes an atom mixture layer including carbide of the metal element and alloy of iron and the metal element and a carbon layer including amorphous carbon. Hence, the solid lubricating film has an excellent lubricating property as well as a high adhesion property to the iron-base substrate. Namely, the excellent lubricating property will last for a long period of time.Type: GrantFiled: April 12, 1991Date of Patent: June 1, 1993Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Akio Itoh, Tatsumi Hioki, Junichi Kawamoto
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Patent number: 4917953Abstract: A ceramic member composed of a ceramic material which is coated with a solid lubricating film. The solid lubricating film is formed on the surface of the ceramic material by heating and evaporating in a vacuum atmosphere having a vacuum degree of not less than 10.sup.-4 Torr an organic material which has a vapor pressure of not more than 10.sup.-4 Torr at room temperature while implanting the ions of a gas element having an energy of not less than 1 keV on the surface of the organic material at the rate of not less than 1.times.10.sup.15 ions/cm.sup.2. A method of forming such a solid lubricating film on the surface of a ceramic material is also disclosed.Type: GrantFiled: February 26, 1988Date of Patent: April 17, 1990Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Tatsumi Hioki, Shogo Hibi, Jun-ichi Kawamoto
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Patent number: 4678678Abstract: A method of strengthening ceramic material by forming a metal film on the surface of the ceramic material and irradiating ions of high energy on the surface of the film. For further improvement, the material may be heat treated at a temperature of 600.degree. C. to 1600.degree. C. after the ion irradiation.Type: GrantFiled: January 25, 1985Date of Patent: July 7, 1987Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Osami Kamigaito, Haruo Doi, Shoji Noda, Tatsumi Hioki, Akio Itoh, Mitsutaka Kakeno
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Patent number: 4384989Abstract: Semiconductive barium titanate having a positive temperature coefficient of resistance comprises a barium titanate semiconductor including barium titanate and a small quantity of a doping element, and at least one additive selected from among silicon nitride, titanium nitride, zirconium nitride and silicon carbide. The semiconductive barium titanate of this invention has a sharp rise in the variation of specific resistivity with temperature change and a large specific resistivity ratio in the PTC temperature region, and can be produced with high reproducibility, since a widely differing quantity of the doping element can be effectively added to barium titanate.Type: GrantFiled: April 30, 1982Date of Patent: May 24, 1983Assignee: Kabushiki Kaisha Toyota Chuo KenyushoInventors: Osami Kamigaito, Tatsumi Hioki, Nobuyuki Yamamoto, Yoshiharu Hirose, Haruo Doi