Patents by Inventor Noboru Shimizu
Noboru Shimizu 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: 5808843Abstract: A magnetoresistance effect reproduction head which comprises a magnetoresistive layer having a central sensing region and an end domain control region and formed into a thin film of a ferromagnetic material, a hard magnetic layer overlapping with the end domain control region in direct contact therewith and formed into a thin film of a hard magnetic material, a magnetic field and a longitudinal magnetic bias field by ferromagnetic exchange coupling is generated for maintaining the central sensing region of the magnetoresistive layer in single domain state.Type: GrantFiled: May 29, 1992Date of Patent: September 15, 1998Assignee: Hitachi, Ltd.Inventors: Toshio Kobayashi, Isamu Yuito, Masahiro Kitada, Noboru Shimizu, Naoki Koyama
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Patent number: 5757958Abstract: A document recognizing system in which a document-forming work station coupled with a scanner, a file station for storing image data, and a recognition work station for recognizing a document image are interconnected through a network. In the document recognizing system, the character image data entered from the scanner is transferred to the file station through the document-forming work station, and the recognition result of the character image data by the recognition work station is also transferred to the file station and stored therein, allowing the operator to read out a necessary recognition result at the time of forming a desired document in the document-forming work station.Type: GrantFiled: June 5, 1995Date of Patent: May 26, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Noboru Shimizu, Katsuhiko Itonori, Norio Yamamoto
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Patent number: 5754711Abstract: A document recognizing system in which a document-forming work station coupled with a scanner, a file station for storing image data, and a recognition work station for recognizing a document image are interconnected through a network. In the document recognizing system, the character image data entered from the scanner is transferred to the file station through the document-forming work station, and the recognition result of the character image data by the recognition work station is also transferred to the file station and stored therein, allowing the operator to read out a necessary recognition result at the time of forming a desired document in the document-forming work station.Type: GrantFiled: July 8, 1997Date of Patent: May 19, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Noboru Shimizu, Katsuhiko Itonori, Norio Yamamoto
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Patent number: 5726837Abstract: The magnetoresistance effect element is of a multilayered structure having at least magnetic layers and an intermediate layer of an insulating material, a semiconductor or an antiferromagnetic material against the magnetic layers, and the magnetoresistance effect element has terminals formed at least on the opposite magnetic layers, respectively, so that a current flows in the intermediate layer. The film surfaces of all the magnetic layers constituting the magnetoresistance effect element are opposed substantially at right angles to the recording surface of a magnetic recording medium. Therefore, the area of the magnetic layers facing the recording surface of the magnetic recording medium can be extremely reduced, and thus the magnetic field from a very narrow region of the high-density recorded magnetic recording medium can be detected by the current which has a tunneling characteristic and passes through the intermediate layer.Type: GrantFiled: October 24, 1994Date of Patent: March 10, 1998Assignee: Hitachi, Ltd.Inventors: Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki, Mikio Suzuki, Masaaki Futamoto, Fumio Kugiya, Yoshibumi Matsuda, Kazuo Shiiki, Yoshinori Miyamura, Kyo Akagi, Takeshi Nakao, Hirotsugu Fukuoka, Takayuki Munemoto, Tokuho Takagaki, Toshio Kobayashi, Hideo Tanabe, Noboru Shimizu
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Patent number: 5521005Abstract: In a magnetic head whose recording and reproduction sections are separated, the magnetoresistive element constituting the reproduction head has a structure comprising a soft magnetic film, a spacer metallic film, and a magnetoresistive film and uses a high-performance soft magnetic film whose composition is Ni--Fe--Ru, Ni--Fe--Ru--M (M: fourth element), Ni--Fe--Ta or Ni--Fe--Ta--M (M: fourth element) and which has low coercivity, low magnetostriction, high specific resistance, high saturation magnetization, low magnetoresistivity and high corrosion resistance, this invention provides a recording-reproduction separation type magnetic head comprising a soft magntic bias film which is high magnetic performance, low production cost, and high corrosion resistance.Type: GrantFiled: November 25, 1992Date of Patent: May 28, 1996Assignee: Hitachi, Ltd.Inventors: Masahiro Kitada, Noboru Shimizu, Naoki Koyama
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Patent number: 5510366Abstract: An indole derivative represented by formula (1), ##STR1## wherein A is a group ##STR2## wherein R.sup.10 is hydrogen or lower alkyl, dotted lines may optionally be present, and R.sup.1 -R.sup.9 represents various substitutional groups. The compound (1) exhibits a positive inotropic action on cardiac muscle, an anti-arrhythmic action, and a vasodilation action without increasing the heart rate. A heart affection therapeutic agent comprising this compound as an effective component is extremely effective for treating heart failures and arrhythmia.Type: GrantFiled: October 28, 1994Date of Patent: April 23, 1996Assignee: Kowa Co., Ltd.Inventors: Yoshinori Kyotani, Katsumi Kawamine, Tsutomu Toma, Tadaaki Ohgiya, Takashi Yamaguchi, Kazuhiro Onogi, Seiichi Sato, Noboru Shimizu, Hiromichi Shigyo, Tomio Ohta, Toshiaki Oda, Yukihiro Okuno, Kimiyuki Shibuya, Yoshio Takahashi, Mikio Fujii, Yasumi Uchida
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Patent number: 5401542Abstract: In a magnetoresistive magnetic head which has a permalloy film (2, 22) as the magnetoresistive film and also has a shunt film for applying a transverse biasing magnetic field, an Nb film (3, 23) is formed as the shunt film by the electron-beam evaporation method to increase the heat resistance of the magnetoresistive element, thus making it possible to increase the temperature at which the magnetic head is manufactured.Type: GrantFiled: February 16, 1993Date of Patent: March 28, 1995Assignee: Hitachi, Ltd.Inventors: Masahiro Kitada, Noboru Shimizu, Hideo Tanabe, Hitoshi Nakamura
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Patent number: 5390061Abstract: The magnetoresistance effect element is of a multilayered structure having at least magnetic layers and an intermediate layer of an insulating material, a semiconductor or an antiferromagnetic material against the magnetic layers, and the magneto-resistance effect element has terminals formed at least on the opposite magnetic layers, respectively, so that a current flows in the intermediate layer. The film surfaces of all the magnetic layers constituting the magnetoresistance effect element are opposed substantially at right angles to the recording surface of a magnetic recording medium. Therefore, the area of the magnetic layers facing the recording surface of the magnetic recording medium can be extremely reduced, and thus the magnetic field from a very narrow region of the high-density recorded magnetic recording medium can be detected by the current which has a tunneling characteristic and passes through the intermediate layer.Type: GrantFiled: June 5, 1991Date of Patent: February 14, 1995Assignee: Hitachi, Ltd.Inventors: Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki, Mikio Suzuki, Masaaki Futamoto, Fumio Kugiya, Yoshibumi Matsuda, Kazuo Shiiki, Yoshinori Miyamura, Kyo Akagi, Takeshi Nakao, Hirotsugu Fukuoka, Takayuki Munemoto, Tokuho Takagaki, Toshio Kobayashi, Hideo Tanabe, Noboru Shimizu
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Patent number: 5386508Abstract: A program generator including: a character/figure separating device for separating characters and line graphics from an input flowchart image. A character recognizing device performs character recognition on the separated character portion and a figure recognizing device extracts symbols from the line graphics. A program code generating device generates instructions corresponding to the symbols and generates a program code by combining the generated instructions with the results of the character recognition that corresponds to the positions in which the symbols have been extracted.Type: GrantFiled: August 16, 1991Date of Patent: January 31, 1995Assignee: Fuji Xerox Co., Ltd.Inventors: Katsuhiko Itonori, Noboru Shimizu
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Patent number: 5376257Abstract: A process for feed oil refining for production of lubricating oil, by using an equipment for lubricating oil production including a fulfural refining unit, a hydrotreating unit and a ketone dewaxing unit, all connected in series. In this process, operations associated with the switch of feed oil are conducted by carrying out the first to seventh step groups successively. Each step group is initiated when a given time has passed since the start of the previous step group, or when the value of a particular measurement item has reached a target value, or when the value of a particular measurement item has shown a change. First, in the first step group, the amount of feed oil supplied to each unit, etc. is adjusted and, in the second step group, the feed oil to the furfural refining unit is switched.Type: GrantFiled: August 2, 1993Date of Patent: December 27, 1994Assignee: Nippon Petroleum Refining Company, LimitedInventors: Akinori Odan, Noboru Shimizu, Norihiko Ageishi
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Patent number: 5337203Abstract: A magnetoresistive head having a structure based on a two-layer film having a first film exhibiting a magnetoresistive effect and a second film comprising Nb and at least one element selected from the group consisting of Ti, Cr, Mo, Zr, W, Pt, Re, V, Hf, Ta, Rh, Ni and Ru as an additive element.Type: GrantFiled: April 27, 1992Date of Patent: August 9, 1994Assignee: Hitachi, Ltd.Inventors: Masahiro Kitada, Hideo Tanabe, Noboru Shimizu, Naoki Koyama, Toshio Kobayashi
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Patent number: 5287237Abstract: In order to prevent generation of Barkhausen noise of a magnetoresistance-effect element, a thin antiferromagnetic film formed of Fe-Mn-X alloy containing a third alloying element X (which serves to improve corrosion resistance of Fe-Mn alloy) by 0.1 to 20 atomic % is disposed in adjacent to a thin permalloy film. The element X is selected from the group consisting of Ir, Ru, Zr, Nb, Si, Ge, V, Co, Pt and Pd. It is particularly recommended to employ Ir of 4 to 15 atomic % or Ru of 5.5 to 15 atomic % as the element X. When one or more alloying element selected from Ru, Rh, Pt, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Ni, Cu, Al, Si and Ge is added to Fe and Mn which are essential components of the Fe-Mn-X alloy in addition to the element X, corrosion resistance of the alloy is improved more sufficiently.Type: GrantFiled: March 12, 1991Date of Patent: February 15, 1994Assignee: Hitachi, Ltd.Inventors: Masahiro Kitada, Noboru Shimizu, Hideo Tanabe, Ryoichi Nakatani, Isamu Yuito, Naoki Koyama
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Patent number: 5257328Abstract: A document recognition device capable of correcting results obtained by recognizing a character image. The document recognition device includes a character recognizing unit for recognizing a character image, a correction data base in which correction information on mis-recognized characters which were targets to be corrected by an operator has been registered, an automatic correction unit for correcting results recognized by the character recognizing unit by use of the correction data base, an operator's correction unit by which the operator corrects results corrected by the automatic correction unit, and a correction data base updating unit for registering, in the correction data base, correction information obtained from the results recognized by the character recognizing unit and the results corrected by the operator's correction unit.Type: GrantFiled: April 1, 1992Date of Patent: October 26, 1993Assignee: Fuji Xerox Co., Ltd.Inventor: Noboru Shimizu
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Patent number: 5218497Abstract: A magnetic recording-reproducing apparatus is disclosed which comprises a recording inductive magnetic head, a reproducing magnetoresistive magnetic head, a read-write circuit for inputting a signal to the inductive magnetic head and for reproducing the output from the magnetoresistive magnetic head, an interface for inputting/outputting a signal between the read-write circuit and an external apparatus, and a mechanism for moving the inductive magnetic head, the magnetoresistive magnetic head and the magnetic recording medium relative to one another, wherein the information recorded on the recording medium is reproduced with an area recording density of 300 Mb/in.sup.2 or more.Type: GrantFiled: December 13, 1991Date of Patent: June 8, 1993Assignee: Hitachi, Ltd.Inventors: Hideo Tanabe, Masahiro Kitada, Noboru Shimizu, Hitoshi Nakamura
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Patent number: 5155808Abstract: In a computer network system comprising a plurality of computers connected to a communication line, each computer executes a program including a function. In one of the computers, a judging section is supplied with a request indicative of the function from the program and judges whether or not the function can be executed by the above-mentioned one to produce a non-executable signal when the function cannot be executed by the above-mentioned one. Responsive to the non-executable signal, a request command generating section generates an original request command which is transmitted to at least one other computer as a transmission request command by a command transmitting section.Type: GrantFiled: July 11, 1989Date of Patent: October 13, 1992Assignee: NEC CorporationInventor: Noboru Shimizu
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Patent number: 5010433Abstract: In a magnetoresistive magnetic head which has a permalloy film as the magnetoresistive film and also has a shunt film for applying a transverse biasing magnetic field, an Nb film having an electrical resistivity of not more than 30 .mu..OMEGA.cm is formed as the shunt film by the electron-beam evaporation method to increase the heat resistance of the magnetoresistive element, thus making it possible to increase the temperature at which the magnetic head is manufactured.Type: GrantFiled: February 16, 1989Date of Patent: April 23, 1991Assignee: Hitachi, Ltd.Inventors: Masahiro Kitada, Noboru Shimizu, Hideo Tanabe, Hitoshi Nakamura
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Patent number: 4925981Abstract: A method of isolating and recovering methacrylic acid from a methacrylic acid-containing reaction product gas resulting from the vapor-phase catalytic oxidation of isobutylene, tertiary butanol or isobutyraldehyde, which comprises introducing the reaction product gas comprising methacrylic acid and various by-products including high boiling substances at a high temperature of 250.degree. to 300.degree. C. into a cooling zone, rapidly cooling the gas therein to a temperature of not more than 100.degree. C. to condense methacrylic acid and thus isolate methacrylic acid, while also converting the high boiling substances to fumes, thereafter introducing the cooled gas containing said fumes into a venturi scrubber, contacting it therein with an aqueous medium to remove said fumes, finally introducing the treated gas into a methacrylic acid-absorbing zone and absorbing methacrylic acid by absorption into an aqueous medium.Type: GrantFiled: January 16, 1987Date of Patent: May 15, 1990Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Noboru Shimizu, Hiroshi Yoshida, Hiromiki Daigo, Shoichi Matsumoto
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Patent number: 4841399Abstract: The use of a pure zirconium film as a shunt film in a magnetoresistive head having a permalloy film as a magnetoresistive film and a shunt film for application of a transverse biasing magnetic field serves to improve the heat resistance of the magnetoresistive element and allows an increase in the temperature used in the process for producing a magnetic head.Type: GrantFiled: December 1, 1986Date of Patent: June 20, 1989Assignee: Hitachi, Ltd.Inventors: Masahiro Kitada, Noboru Shimizu, Hideo Tanabe, Hitoshi Nakamura, Tetsuo Kobayashi, Tooru Takeura, Kazuhiro Momata
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Patent number: 4814919Abstract: A soft-film-bias type magnetoresistive device is disclosed in which a high-permeability magnetic film, an insulating film and a permalloy film are formed on a substrate in this order, and first, second and third electrodes, which are parallel to each other, are provided on the permalloy film, to form a differential type magnetoresistive device. In this magnetoresistive device, a bias magnetic field which is generated and applied to the permalloy film between the first and second electrodes, is opposite in direction to a bias magnetic field which is generated and applied to the permalloy film between the second and third electrodes.Type: GrantFiled: November 24, 1987Date of Patent: March 21, 1989Assignee: Hitachi, Ltd.Inventors: Masahiro Kitada, Hideo Tanabe, Noboru Shimizu, Yoshihisa Kamo, Hitoshi Nakamura, Tooru Takeura
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Patent number: 4783711Abstract: In a magnetoresistive sensor having a magnetoresistive effect element which is held between two sheets of high permeability magnetic ferrite with insulating layers interposed between them, a ferromagnetic metal film is provided adherently to the high permeability magnetic ferrite between the ferrite and the insulating layer, a rise in temperature of the magnetoresistive effect element thereby being held down and a reproduced waveform being made sharp, and thus the characteristics of the element being improved with the life thereof prolonged.Type: GrantFiled: June 27, 1986Date of Patent: November 8, 1988Assignee: Hitachi, Ltd.Inventors: Masahiro Kitada, Hideo Tanabe, Noboru Shimizu, Hitoshi Nakamura, Kazuhiro Momata, Shigeyoshi Kato, Tooru Takeura, Tetsuo Kobayashi