Patents by Inventor Yoshitaka Hayashi
Yoshitaka Hayashi 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: 6503592Abstract: A sputtering target for fabricating a recording layer of a phase-change type optical recording medium contains a compound or mixture including as constituent. elements Ag, In, Te and Ob with the respective atomic percent (atom. %) of &agr;, &bgr;, &ggr; and &dgr; thereof being in the relationship of 2≦&agr;≦30, 3≦&bgr;≦30, 10≦&ggr;≦50, 15≦&dgr;≦83 and &agr;+&bgr;+&ggr;+&dgr;=100, and a method of producing the above sputtering target is provided. A phase-change type optical recording medium includes a recording layer containing as constituent elements Ag, In, To and Sb with the respective atomic percent of &agr;, &bgr;, &ggr; and &dgr; thereof being in the relationship of 0<&agr;≦30, 0<&bgr;≦30, 10≦&ggr;≦50, 10≦&dgr;≦80, and &agr;+&bgr;+&ggr;+&dgr;=100, and is capable of recording and erasing information by utilizing the phase changes of a recording material in the recording layer.Type: GrantFiled: February 28, 2001Date of Patent: January 7, 2003Assignee: Ricoh Company, Ltd.Inventors: Katsuyuki Yamada, Hiroko Iwasaki, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama, Hiroshi Deguchi, Masaetsu Takahashi, Yoshitaka Hayashi
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Publication number: 20020184298Abstract: A portal site providing machine 20 obtains web pages provided by websites A-E at regular time intervals, and compares the latest web pages with the old web pages obtained last time. Then, the item-by-item comparison is made between the latest and old web pages to determine the degree of updating of the contents. The portal site providing machine 20 provides a portal page which contains images representing respective sites A-E with corresponding size and arrangement according to the degrees of updating.Type: ApplicationFiled: February 22, 2002Publication date: December 5, 2002Applicant: Fujitsu LimitedInventors: Ichiro Hashimoto, Yoshitaka Hayashi, Yukihiro Matsubara, Kazuko Hayashi, Yasuko Yamauchi, Tetsunari Kawaguchi, Yoko Yamamoto, Hisaki Yokogawa
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Publication number: 20020086766Abstract: A starting clutch includes a planetary mechanism; a first clutch for outputting a torque to an outer diameter portion of the planetary mechanism; a second clutch for outputting the torque to an intermediate portion of the planetary mechanism; and a lock mechanism for locking a reactive force from an inner diameter portion of the planetary mechanism.Type: ApplicationFiled: November 5, 2001Publication date: July 4, 2002Applicant: NSK Ltd.Inventors: Yoshitaka Hayashi, Hiroshi Fukushima, Takao Obara, Minao Umeda, Keeichi Minagi, Masao Shoji, Yoshio Kinoshita, Shiro Takeuchi, Tadashi Watanabe, Hirofumi Nakagomi, Tatsuro Miyoshi, Shigeharu Nishimura, Hiroshi Yabe, Nobuhiro Horiuchi
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Patent number: 6395866Abstract: A polyester resin for an antifouling paint which contains a structural unit of the formula (I) wherein R1 is H or alkyl having 1 to 3 carbon atoms, R2 is H or methyl and n is an integer of 0-4, in a proportion of not less than 90 mol % and a metal in the main chain at a concentration of 10-300 eq/106 g, and which has an acid value of 20-1000 eq/106 g. A combined use of the polyester resin with a natural antifouling agent affords a paint with extremely less burden on the marine environment.Type: GrantFiled: July 27, 2000Date of Patent: May 28, 2002Assignees: Toyo Boseki Kabushiki Kaisha, Ishikawajima-Harima Heavy Industries Co., Ltd., Nippon Paint Marine Coatings Co., Ltd.Inventors: Takashi Miyamoto, Takeshi Ito, Katsuya Shimeno, Miyako Shibazaki, Kenichi Akamine, Yoshitaka Hayashi, Suetsugu Mitsusada
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Patent number: 6280684Abstract: A sputtering target for fabricating a recording layer of a phase-change type optical recording medium contains a compound or mixture including as constituent elements Ag, In, Te and Sb with the respective atomic percent (atom. %) of &agr;, &bgr;, &ggr; and &dgr; thereof being in the relationship of 2≦&agr;≦30, 3≦&bgr;≦30, 10≦&ggr;≦50, 15≦&dgr;≦83 and &agr;+&bgr;+&ggr;+&dgr;=100, and a method of producing the above sputtering target is provided. A phase-change type optical recording medium includes a recording layer containing as constituent elements Ag, In, Te and Sb with the respective atomic percent of &agr;, &bgr;, &ggr; and &dgr; thereof being in the relationship of 0<&agr;≦30, 0<&bgr;≦30, 10≦&ggr;≦50, 10≦&dgr;≦80, and &agr;+&bgr;+&ggr;+&dgr;=100, and is capable of recording and erasing information by utilizing the phase changes of a recording material in the recording layer.Type: GrantFiled: January 19, 2000Date of Patent: August 28, 2001Assignee: Ricoh Company, Ltd.Inventors: Katsuyuki Yamada, Hiroko Iwasaki, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama, Hiroshi Deguchi, Masaetsu Takahashi, Yoshitaka Hayashi
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Patent number: 6152605Abstract: A ball bearing in which races are well prevented from flaking in early stages under an environment using lubricating oil having a high traction coefficient so that a long life of the ball bearing is attained, while the cost of the bearing is reduced. The ball bearing has a plurality of balls disposed between a fixed race and a rotating race, and the ball bearing is used under an environment using lubricating oil having a traction coefficient of 0.07 or more under the conditions that a slip factor is 5% and a temperature is 40.degree. C. At least the groove radius of the rotating race is set to be in a range of from 0.53 Dw to 0.58 Dw both inclusive when Dw designates the diameter of balls. In addition, the hardness of the race is set to be in a range of from HRC 58 to HRC 64 both inclusive.Type: GrantFiled: August 24, 1999Date of Patent: November 28, 2000Assignee: NSK Ltd.Inventors: Hiromichi Takemura, Kazuo Sekino, Nobuaki Mitamura, Yasuo Murakami, Hiroshi Suzuki, Yoshitaka Hayashi
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Patent number: 6127016Abstract: A sputtering target for fabricating a recording layer of a phase-change type optical recording medium contains a compound or mixture including as constituent elemets Ag, In, Te and Sb with the respective atomic percent (atom. %) of .alpha., .beta., .gamma. and .delta. thereof being in the relationship of 2.ltoreq..alpha..ltoreq.30, 3.ltoreq..beta..ltoreq.30, 10.ltoreq..gamma..ltoreq.50, 15.ltoreq..delta..ltoreq.83 and .alpha.+.beta.+.gamma.+.delta.=100, and a method of producing the above sputtering target is provided. A phase-change type optical recording medium includes a recording layer containing as constituent elements Ag, In, Te and Sb with the respective atomic percent of .alpha., .beta., .gamma. and .delta. thereof being in the relationship of 0<.alpha..ltoreq.30, 0<.beta..ltoreq.30, 10.ltoreq..gamma..ltoreq.50, 10.ltoreq..delta..ltoreq.80, and .alpha.+.beta.+.gamma.+.delta.Type: GrantFiled: October 3, 1997Date of Patent: October 3, 2000Assignee: Ricoh Company, Ltd.Inventors: Katsuyuki Yamada, Hiroko Iwasaki, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama, Hiroshi Deguchi, Masaetsu Takahashi, Yoshitaka Hayashi
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Patent number: 6101488Abstract: An intelligent information retrieval program generation system can easily generate an intelligent information retrieval program that is applicable to a wide-area information network such as the Internet. When questions to be used as criteria for determining conclusions, answer alternatives to the questions, and information of conclusions are inputted, a table defining unit defines a conclusion determining table which comprises answer alternatives to each of the questions and conclusions. A knowledge establishing unit displays the conclusion determining table on a display screen, receives inputted answer conditions for the conclusions to be selected, and establishes the answer conditions in the conclusion determining table. A retrieval program generator generates an intelligent information retrieval program for decoding the conclusion determining table in which the knowledge has been established, displaying questions, receiving answers to the questions, and determining conclusions depending on the answers.Type: GrantFiled: March 4, 1997Date of Patent: August 8, 2000Assignee: Fujitsu LimitedInventors: Yoshitaka Hayashi, Keiichi Oketani, Shunji Matsumoto, Yutaka Miyahara
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Patent number: 5900336Abstract: A negative electrode for a lithium secondary battery includes at least two kinds of carbon materials with a spacing of lattice plane (d.sub.002) of 3.4 .ANG. or less in the direction of the C axis thereof. A lithium secondary battery using this negative electrode is provided.Type: GrantFiled: August 6, 1997Date of Patent: May 4, 1999Assignee: Ricoh Company, Ltd.Inventors: Toshiyuki Kabata, Yoshiko Kurosawa, Toshiyuki Ohsawa, Nobuo Katagiri, Okitoshi Kimura, Toshishige Fujii, Yoshitaka Hayashi, Hiroyuki Iechi, Yumiko Suzuki, Tomohiro Inoue
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Patent number: 5885733Abstract: A non-aqueous secondary lithium battery includes a positive electrode; a negative electrode which including at least one component selected from the group consisting of lithium, a lithium alloy, and a host compound which forms an intercalation compound or complex in combination with lithium; and an electrolytic solution or solid electrolyte containing a silicone compound.Type: GrantFiled: July 18, 1997Date of Patent: March 23, 1999Assignee: Ricoh Company, Ltd.Inventors: Toshiyuki Ohsawa, Toshiyuki Kabata, Yoshiko Kurosawa, Okitoshi Kimura, Toshishige Fujii, Nobuo Katagiri, Yoshitaka Hayashi
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Patent number: 5882493Abstract: A sputtering target, for forming a recording layer of an optical recording medium in which information is written and erased through a transition between two phases by utilizing electromagnetic wave energy, consists of a heat-treated and sintered composition represented by the formula:Ag.sub..alpha. In.sub..beta. Te.sub..gamma. Sb.sub..delta.wherein2.ltoreq..alpha..ltoreq.303.ltoreq..beta..ltoreq.3010.ltoreq..gamma..ltoreq.5015.ltoreq..delta..ltoreq.83.alpha.+.beta.+.gamma.+.delta.=100A method of producing the sputtering target, an optical recording medium having a recording layer formed through sputtering by use of the sputtering target, and a method of forming the recording layer are also disclosed.Type: GrantFiled: October 8, 1997Date of Patent: March 16, 1999Assignee: Ricoh Company, Ltd.Inventors: Hiroko Iwasaki, Yoshiyuki Kageyama, Makoto Harigaya, Masaetsu Takahashi, Hiroshi Deguchi, Katsuyuki Yamada, Yoshitaka Hayashi, Yukio Ide
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Patent number: 5785828Abstract: A sputtering target for fabricating a recording layer of a phase-change type optical recording medium contains a compound or mixture including as constituent elements Ag, In, Te and Sb with the respective atomic percent (atom.%) of .alpha., .beta., .gamma.and .delta.thereof being in the relationship of 2.ltoreq..alpha..ltoreq.30, 3.ltoreq..beta..ltoreq.30, 10.ltoreq..gamma..ltoreq.50, 15.ltoreq..delta..ltoreq.83 and .alpha.+.beta.+.gamma.+.delta.=100, and a method of producing the above sputtering target is provided. A phase-change type optical recording medium includes a recording layer containing as constituent elements Ag, In, Te and Sb with the respective atomic percent of .alpha., .beta., .gamma.and .delta.thereof being in the relationship of 0<.alpha..ltoreq.30, 0<.beta..ltoreq.30, 10.ltoreq..gamma..ltoreq.50, 10.ltoreq..delta..ltoreq.80, and .alpha.+.beta.+.gamma.+.delta.Type: GrantFiled: December 12, 1995Date of Patent: July 28, 1998Assignee: Ricoh Company, Ltd.Inventors: Katsuyuki Yamada, Hiroko Iwasaki, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama, Hiroshi Deguchi, Masaetsu Takahashi, Yoshitaka Hayashi
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Patent number: 5135893Abstract: This invention provides a carbon-containing ceramic composite for molten non-ferrous metal, the composite being a sintered ceramic body to be used in contact with molten non-ferrous metal, the sintered body containing an aggregate of silicon carbide and/or silicone nitride, the sintered body being characterized in that it comprises,(a) 100 parts by weight of the aggregate,(b) 5 to 45 parts by weight of flake graphite, and(c) boron carbide in an amount of 10 to 40% by weight based on the flake graphite.Type: GrantFiled: November 30, 1990Date of Patent: August 4, 1992Assignee: Osaka Gas Company LimitedInventors: Shoji Dohi, Akio Nakashiba, Kengo Hamada, Shigenobu Yurugi, Hiroshi Sano, Yoshitaka Hayashi, Akira Nishihira, Hirokazu Asada, Mineyoshi Nishinou, Mamoru Imajo
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Patent number: 5018384Abstract: A rotational speed detector which is incorporated in an antiskid brake system for an automobile to detect a rotational speed of a wheel. A rotational speed sensor assembly which is provided on either one of the outer and inner rings of a wheel is biased toward a sensor rotor that is provided on the other of the two rings in such a manner that the sensor assembly is slidable on the sensor rotor, thereby maintaining the distance between the rotational speed sensor assembly and the sensor rotor at a constant level.Type: GrantFiled: July 19, 1990Date of Patent: May 28, 1991Assignee: Nippon Seiko Kabushiki KaishaInventors: Yoshitaka Hayashi, Hayato Ohmi
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Patent number: 4915199Abstract: A sensor rotor unit mounted on a rotary member and cooperating with a sensor to detect the number of rotations of the rotary member includes at least a sensor rotor formed of a magnetic material and having a plurality of concavities and convexities provided at intervals in the circumferential direction thereof, and an annular rust preventing member made integral with the sensor rotor so as to surround the peripheral surface and end surface of the sensor rotor which are opposed to the rotary member.Type: GrantFiled: November 1, 1988Date of Patent: April 10, 1990Assignee: Nippon Seiko Kabushiki KaishaInventor: Yoshitaka Hayashi
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Patent number: 4913276Abstract: A clutch releasing apparatus comprises a clutch releasing bearing assembly including a clutch release bearing and a holder therefor. A support member of the holder is supported on a bearing support mechanism, and a separation prevention arrangement is provided such that the support member may be fitted on the support mechanism with a relatively small force, but necessitating a relatively large predetermined force to remove the support member from the support mechanism.Type: GrantFiled: June 17, 1988Date of Patent: April 3, 1990Assignee: Nippon Seiko Kabushiki KaishaInventors: Yoshitaka Hayashi, Toshiharu Honda
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Patent number: 4795278Abstract: A bearing assembly comprising a bearing including an inner and outer rings one of which is fixed to a rotating member, and a pulser gear fixed to the rotating member. The pulser gear is composed of an annular magnetic plate member and having a plurality of punched through holes mutually separated along a circumferential direction thereof. Revolution of the rotating member can be detected by a sensor provided close to the pulser gear.Type: GrantFiled: November 20, 1987Date of Patent: January 3, 1989Assignee: Nippon Seiko Kabushiki KaishaInventor: Yoshitaka Hayashi
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Patent number: 4783180Abstract: A bearing assembly for a vehicle includes an inner race made integral with the wheel, and an outer race disposed outside and concentrically with the inner race with rolling members interposed therebetween. The inner race is adapted to rotate relative to the outer race. The bearing assembly further includes an annular member including a fixed portion fixedly fitted to the outer peripheral surface of the outer race, an extension extending continuously to the fixed portion and extending while surrounding the outer race to form a desired seal portion between itself and the outer race, and a pulser gear portion comprising a plurality of concave and convex portions formed on the extension and provided circumferentially at intervals, and a sensor is disposed in proximity to the pulser gear portion, whereby the number of rotations of the wheel can be detected.Type: GrantFiled: September 30, 1987Date of Patent: November 8, 1988Assignee: Nippon Seiko Kabushiki KsiahsInventor: Yoshitaka Hayashi
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Patent number: 4545537Abstract: A shredder comprises a cutter unit including a pair of rotary cutters for shredding a material therebetween while the rotary cutters are rotating in a normal direction, a reversible motor for rotating the rotary cutters through a speed reducer, and a switch unit for selectively causing the motor to rotate the rotary cutter in the normal direction or reversing the motor to rotate the rotary cutters in a reverse direction to remove the material from the rotary cutters when the material is jammed in the rotary cutters. An electrical control circuit is responsive to actuation of the switch unit for enabling the motor to produce a larger torque while rotating in the reverse direction than the torque produced while rotating in the normal direction, thereby reliably releasing the rotary cutters from biting engagement with the material when jammed.Type: GrantFiled: March 10, 1982Date of Patent: October 8, 1985Assignee: Matsushita Electric Industrial Company, LimitedInventors: Masahiro Kimura, Yoshitaka Hayashi, Ryohei Yoshida