Patents by Inventor Kazuo Saitoh
Kazuo Saitoh 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: 20050047245Abstract: In an A/D converter having a single flux quantum circuit having a flux quantum as an information carrier, a superconducting amplifier circuit driven by an AC current, and a semiconductor circuit, the operations of the circuits are synchronized with each other and a data signal from the single flux quantum circuit is transmitted to the semiconductor circuit. An AC current as the power source of a superconducting amplifier circuit is inputted as a master clock signal to the single flux quantum circuit and the semiconductor circuit to synchronize the operations of the circuits with the master clock signal. The single flux quantum circuit has a clock signal frequency multiplier circuit, a demultiplexing circuit and a memory circuit.Type: ApplicationFiled: June 8, 2004Publication date: March 3, 2005Inventors: Futoshi Furuta, Kazuo Saitoh
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Publication number: 20040251902Abstract: The invention provides nuclear magnetic resonance equipment realizing improved sensitivity of a probe for receiving a free induction decay (FID) signal in nuclear magnetic resonance (NMR) spectroscopy in a high frequency band of 600 MHz or higher. By manufacturing a solenoid coil of a higher filling factor by using a superconductor of extremely low resistance to high frequency current, sensitivity is increased. A superconducting thin film made of magnesium diboride (MgB2) formed on a donut plate-type substrate is disposed so that the film surface becomes parallel with the uniform magnetic field. The object is realized by a probe made by a solenoid coil formed by connecting a plurality of coil parts by capacitive coupling via a normal metal lead.Type: ApplicationFiled: May 25, 2004Publication date: December 16, 2004Inventors: Kazumasa Takagi, Kazuo Saitoh, Hisaaki Ochi, Hiroshi Morita, Masae Kiryu, Michiya Okada
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Patent number: 6632487Abstract: The invention provides a sheet coated with a powdery coating composition comprising a substrate and a porous and continuous resin layer provided on the substrate, the resin layer comprising particles of the powdery coating composition having an average particle diameter of 0.1 to 30 &mgr;m and inorganic fine particles having an average particle diameter of 1 nm to 1 &mgr;m and dispersed between the particles of powdery coating composition to form space at least in part therebetween. The sheet is suitably used as an image-receiving sheet for an ink-jet recording. The sheet can be obtained according to the invention by mixing a powdery coating composition having an average particle diameter of 0.Type: GrantFiled: February 7, 2000Date of Patent: October 14, 2003Assignee: Bando Chemical Industries, Ltd.Inventors: Toshio Arai, Chikashi Sano, Kazuo Saitoh
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Patent number: 6608518Abstract: The problem of the disclosed technology is as follows. Although a single flux quantum circuit can fabricate a high-speed sequential circuit with ease, the initialization of the circuit is required for guaranteeing the normal operation of the circuit. However, a prior-art circuit has no initializing function, or requires the restructuring of another logic system. For solving the foregoing problem, one Josephson junction is inserted to a flux quantum storage inductor constituting the existing logic circuit, so that a pulse for performing the circuit initialization is injected to the connection point by means of a comparator.Type: GrantFiled: June 6, 2002Date of Patent: August 19, 2003Assignee: Hitachi, Ltd.Inventors: Futoshi Furuta, Kazuo Saitoh, Kazumasa Takagi
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Publication number: 20030016069Abstract: The problem of the disclosed technology is as follows. Although a single flux quantum circuit can fabricate a high-speed sequential circuit with ease, the initialization of the circuit is required for guaranteeing the normal operation of the circuit. However, a prior-art circuit has no initializing function, or requires the restructuring of another logic system.Type: ApplicationFiled: June 6, 2002Publication date: January 23, 2003Applicant: Hitachi, Ltd.Inventors: Futoshi Furuta, Kazuo Saitoh, Kazumasa Takagi
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Patent number: 6486756Abstract: A superconductor signal amplifier which receives an extremely small high-frequency signal having a frequency of tens of GHz generated in a superconductive circuit, amplifies the voltage of the high-frequency signal without a decrease in frequency, and outputs the thus amplified high-frequency signal from the superconductive circuit. At an output part of a single flux quantum circuit using a flux quantum as a binary information carrier, there are provided a superconductive junction line for flux quantum transmission and a splitter for simultaneously producing two flux quanta from a flux quantum. According to the number of plural series-connected SQUIDs, a plurality of flux quantum signals are generated and input to the plural series-connected SQUIDs so that the SQUIDs are simultaneously switched to a voltage state. In each SQUID pair comprising two SQUIDs, a part of an inductor is shared by the two SQUIDs for reduction in inductance, thereby increasing an output voltage of the series-connected SQUIDs.Type: GrantFiled: March 26, 2001Date of Patent: November 26, 2002Assignees: Hitachi, Ltd., International Superconductivity Technology CenterInventors: Yoshinobu Tarutani, Kazuo Saitoh, Kazumasa Takagi, Yoshihisa Soutome, Tokuumi Fukazawa, Akira Tsukamoto
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Publication number: 20010025012Abstract: A superconductor signal amplifier which receives an extremely small high-frequency signal having a frequency of tens of GHz generated in a superconductive circuit, amplifies the voltage of the high-frequency signal without a decrease in frequency, and outputs the thus amplified high-frequency signal from the superconductive circuit. At an output part of a single flux quantum circuit using a flux quantum as a binary information carrier, there are provided a superconductive junction line for flux quantum transmission and a splitter for simultaneously producing two flux quanta from a flux quantum. According to the number of plural series-connected SQUIDs, a plurality of flux quantum signals are generated and input to the plural series-connected SQUIDs so that the SQUIDs are simultaneously switched to a voltage state. In each SQUID pair comprising two SQUIDs, a part of an inductor is shared by the two SQUIDs for reduction in inductance, thereby increasing an output voltage of the series-connected SQUIDs.Type: ApplicationFiled: March 26, 2001Publication date: September 27, 2001Inventors: Yoshinobu Tarutani, Kazuo Saitoh, Kazumasa Takagi, Yoshihisa Soutome, Tokuumi Fukazawa, Akira Tsukamoto
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Patent number: 6025771Abstract: A positive temperature coefficient (PTC) thermistor device for improving workability during assembly of a PTC thermistor element in a casing while eliminating risk of damaging electrode surfaces with enhanced element position stability. To this end, the casing is provided with an insulating guide section for guiding the PTC thermistor element at or near one end, causing the PTC thermistor element to be elastically held by first and second terminals both at a position on one electrode surface which position is near the other edge of the PTC thermistor element and at a position centrally placed on the remaining electrode surface. The guide section essentially consists of first and second guide sections which oppose each other with the PTC thermistor element being sandwiched between, allowing PTC thermistor element to be held by either one of the first and second guide sections and by the first and second terminals.Type: GrantFiled: March 22, 1999Date of Patent: February 15, 2000Assignee: TDK CorporationInventors: Kazumi Kobayashi, Tsutomu Kotani, Kazuo Saitoh
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Patent number: 5834794Abstract: Disclosed is a superconducting device comprising a logic SQUID and a readout SQUID magnetically coupled with the logic SQUID, which are fabricated using a single layer of an oxide high-temperature superconductor, wherein the logic SQUID comprising a superconducting loop constituted by a first superconducting line, a second superconducting line arranged to be parallel to the first superconducting line, third and fourth superconducting lines provided to connect the first and second superconducting lines, and two Josephson junctions formed in the third and fourth superconducting lines, and widths W.sub.1 and W.sub.2 of the first and second superconducting lines are larger than a distance d between them, the width W.sub.2 is larger than the width W.sub.1, and the widths W.sub.1 and W.sub.2 are larger than the widths W.sub.3 and W.sub.4 of the third and fourth superconducting lines.Type: GrantFiled: April 29, 1997Date of Patent: November 10, 1998Assignees: Kabushiki Kaisha Toshiba, International Superconductivity Technology CenterInventors: Hiroyuki Fuke, Kazuo Saitoh, Youichi Enomoto
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Patent number: 5698492Abstract: There is disclosed a herbicidal composition containing (a) 2-?4-chloro-2-fluoro-5-(n-pentyloxycarbonylmethoxy)phenyl!-4,5,6,7-tetrahy dro-2H-isoindole-1,3-dione and (b) at least one selected from the group consisting of N-(phosphonomethyl)glycine, (2-amino-4-methylphosphinobutyryl)alanylalanine, DL-homoalanin-4-yl(methyl)phosphinic acid and salts thereof. Also disclosed is a method for controlling undesired weeds by application of the herbicidal composition.Type: GrantFiled: October 9, 1992Date of Patent: December 16, 1997Assignee: Sumitomo Chemical Company, LimitedInventors: Masaharu Sakaki, Kazuo Saitoh
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Patent number: 5618345Abstract: A self-supporting thin film of silicon single crystal is produced essentially by the steps of implanting boron ions in a silicon single crystal substrate from one major surface thereof to form a high impurity concentration layer having a high boron concentration in the substrate; heating the silicon single crystal substrate formed with the high impurity concentration layer in an atmosphere containing oxygen to form an oxide film on the surface of the single crystal substrate and make the high impurity concentration layer resistant to etching; masking all of the oxide film surface other than that at the center region on the surface opposite from that implanted with boron ions and then exposing the high impurity concentration layer by high-speed mask etching followed by selective etching; and removing the oxide film.Type: GrantFiled: March 14, 1995Date of Patent: April 8, 1997Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Kazuo Saitoh, Hiroaki Niwa, Setsuo Nakao, Soji Miyagawa
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Patent number: 5550389Abstract: A superconducting device low in power dissipation and high in operating speed is fabricated by use of a combination of a superconductor material and a semiconductor material. The superconducting device having a low power dissipation and high operating speed characteristic according to the present invention is suitable for configuring a large-scale integrated circuit.Type: GrantFiled: December 22, 1993Date of Patent: August 27, 1996Assignee: Hitachi, Ltd.Inventors: Toshikazu Nishino, Mutsuko Hatano, Haruhiro Hasegawa, Hideaki Nakane, Ushio Kawabe, Kazuo Saitoh, Mitsuo Suga, Kazumasa Takagi
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Patent number: 5466663Abstract: There is disclosed a compound of the formula: ##STR1## wherein X is hydrogen or halogen; Y is halogen; Z is oxygen or sulfur; R.sup.1 is hydrogen or alkyl; and R.sup.2 is a group of the formula: ##STR2## wherein R.sup.3 and R.sup.4 are the same or different, and each is hydrogen, alkyl, cycloalkyl or benzyl, or the ends of R.sup.3 and R.sup.4 are connected together to be alkylene; or R.sup.2 is a group of the formula: ##STR3## wherein R.sup.5 and R.sup.6 are the same or different, and each is hydrogen or alkyl, or the ends of R.sup.5 and R.sup.6 are connected together to be alkylene, with the proviso that R.sup.2 is a group of the formula: ##STR4## when Z is oxygen, which is useful as a herbicide.Type: GrantFiled: August 18, 1994Date of Patent: November 14, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Mitsunori Hiratsuka, Minoru Takano, Masayuki Enomoto, Satoru Kizawa, Kazuo Saitoh
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Patent number: 5455355Abstract: A pyrimidine herbicide derivative having the formula, ##STR1## wherein A is C.sub.3 -C.sub.6 oxacycloalkyl, C.sub.3 -C.sub.6 oxacycloalkyl substituted with at least one member selected from the group consisting of C.sub.1 -C.sub.6 alkyl and halogen, C.sub.2 -C.sub.6 oxacycloalkyl C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 oxacycloalkyl C.sub.1 -C.sub.6 alkyl substituted with at least one member selected from the group consisting of C.sub.1 -C.sub.6 alkyl and halogen, C.sub.3 -C.sub.5 dioxacycloalykyl, C.sub.3 -C.sub.5 dioxacycloalkyl substituted with at least one member selected from the group consisting of C.sub.1 -C.sub.6 alkyl and halogen, C.sub.3 -C.sub.5 dioxacycloalkyl C.sub.1 -C.sub.6 alkyl or C.sub.3 -C.sub.5 dioxacycloalkyl C.sub.1 -C.sub.6 alkyl substituted with at least one member selected from the group consisting of C.sub.1 -C.sub.6 alkyl and halogen;each of R.sup.1 and R.sup.2, which may be the same or different, is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, halo C.sub.1 -C.sub.Type: GrantFiled: January 25, 1994Date of Patent: October 3, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Mitsunori Hiratsuka, Naonori Hirata, Kazuo Saitoh, Hideyuki Shibata
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Patent number: 5442195Abstract: A superconducting device may include a superconducting weak link equipped with plural superconducting devices that are used as input-output terminals formed on the same plane and at least one current source for applying current to at least one of these superconducting electrodes. A superconducting device suitable for high integration can be realized as it enables structuring of a superconducting weak link 1 equipped with plural superconducting electrodes 101, 102, 103 and 104 that can be used as input-output terminals and changing symmetry of superconducting electrode arrangement through the form of a normal conductor 201 which is forming a superconducting weak link. In addition, when this superconducting device is used as a quasi-particle injection type device, a superconducting device with plural superconducting electrodes that can be used for a gate electrode, drain electrode or control electrode can be realized. Further, a superconducting device equipped with new functions (e.g.Type: GrantFiled: October 18, 1993Date of Patent: August 15, 1995Assignee: Hitachi, Ltd.Inventors: Kazuo Saitoh, Toshikazu Nishino, Mutsuko Hatano
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Patent number: 5298632Abstract: Herbicidal pyrimidine compound having the formula ##STR1## wherein the substitutents A, R.sup.1, R.sup.2, X, Y.sup.1, Y.sup.2, Y.sup.3 and Z are as herein below defined.Type: GrantFiled: October 30, 1992Date of Patent: March 29, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Mitsunori Hiratsuka, Naonori Hirata, Kazuo Saitoh, Hideyuki Shibata
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Patent number: 5232897Abstract: Herbicidal pyrimidine compound having the formula ##STR1## wherein the substitutents A, R.sup.1, R.sup.2, X, Y.sup.1, Y.sup.2, Y.sup.3 and Z are as defined herein below.Type: GrantFiled: November 2, 1992Date of Patent: August 3, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Mitsunori Hiratsuka, Naonori Hirata, Kazuo Saitoh, Hideyuki Shibata
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Patent number: 5135563Abstract: The present invention relates to a pyrimidine derivative having the formula ##STR1## (wherein the variables are defined in the full text of the patent), a method for producing the same, and its use as a herbicide.Type: GrantFiled: July 5, 1991Date of Patent: August 4, 1992Assignee: Sumitomo Chemical Company, LimitedInventors: Mitsunori Hiratsuka, Naonori Hirata, Kazuo Saitoh, Hideyuki Shibata
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Patent number: 5129938Abstract: A herbicidal pyrimidine derivative having the formula, ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, Y.sub.1, Y.sub.2, Y.sub.3, X and Z are defined as in the specification.Type: GrantFiled: July 22, 1991Date of Patent: July 14, 1992Assignee: Sumitomo Chemical Company, LimitedInventors: Mitsunori Hiratsuka, Naonori Hirata, Kazuo Saitoh, Hideyuki Shibata
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Patent number: 4978534Abstract: A gabexate mesylate ointment according to the present invention comprises 0.01-8% by weight of gabexate mesylate, 25-80% by weight of white vaseline, and 20-75% by weight of at least one type of viscosity controller selected from the group consisting of liquid parrafin, squalene and fatty acid ester containing 8-20 carbon atoms. Where desirable, this ointment is added with 1-20% by weight of at least one type of viscosity controlling auxiliary selected from the group consisting of higher alcohol and higher fatty acid containing 14-34 carbon atoms, beeswax and spermaceti wax.Type: GrantFiled: December 6, 1988Date of Patent: December 18, 1990Inventor: Kazuo Saitoh