Patents by Inventor Toshikazu Ohnishi

Toshikazu Ohnishi 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).

  • Publication number: 20010041490
    Abstract: A method and an apparatus of manufacturing an image displaying apparatus comprising an electron source substrate and a phosphor substrate. The electron source substrate is provided with an electron emitting element formed by covering with a container and by applying a voltage to an electronic conductor on the substrate. While, the phosphor substrate is provided with a phosphor thereon. The substrates are subjected to a getter processing and to a seal bonding process under a vacuum condition through a processing chamber, to complete an image forming apparatus. An improvement resides in miniaturizing and simplifying operation, and in greater manufacture speed and mass production.
    Type: Application
    Filed: March 16, 2001
    Publication date: November 15, 2001
    Inventors: Ichiro Nomura, Kohei Nakata, Tetsuya Kaneko, Toshihiko Miyazaki, Yasue Sato, Toshikazu Ohnishi
  • Patent number: 6283815
    Abstract: An electron source comprises one or more electron-emitting devices, especially of surface conduction type, and is provided with means for supplying an activating substance to device(s). The means comprises preferably a substance source and a heater or electron beam generator for gasifying the substance source. The electron source can be combined with an image-forming member (e.g. fluorecent body) to constitute an image-forming apparatus. The means is used for in situ activation or re-activation of the electron-emitting device(s).
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: September 4, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Iwasaki, Toshikazu Ohnishi
  • Patent number: 6246168
    Abstract: An electron-emitting device includes a pair of electrodes and an electroconductive film arranged between the electrodes and including an electron-emitting region carrying a graphite film. The graphite film shows, in a Raman spectroscopic analysis using a laser light source with a wavelength of 514.5 nm and a spot diameter of 1 &mgr;m, peaks of scattered light, of which 1) a peak (P2) located in the vicinity of 1,580 cm−1 is greater than a peak (P1) located in the vicinity of 1,335 cm−1 or 2) the half-width of a peak (P1) located in the vicinity of 1,335 cm−1 is not greater than 150 cm−1.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: June 12, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumio Kishi, Masato Yamanobe, Takeo Tsukamoto, Toshikazu Ohnishi, Keisuke Yamamoto, Sotomitsu Ikeda, Yasuhiro Hamamoto, Kazuya Miyazaki
  • Patent number: 6224732
    Abstract: A dispersing medium containing plural types of particles is let to flow in a flow path formed in a flow cell. The flow cell is irradiated with interfering light to form interference fringes of a pattern of stripes. In another arrangement, light is two-dimensionally scanned at high speed so as to cross a flow in the flow path. The moving particles receive a braking force by the light gradient force whenever they pass through each irradiation light stripe. In that case, greater braking forces act on particles having larger sizes (or larger refractive indices) than on particles having smaller sizes (or smaller refractive indices). Accordingly, the particles receiving smaller braking forces pass through the irradiated position more rapidly, so that particles can be separated to flow in the order from the particles receiving smaller braking forces to the particles receiving greater braking forces.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: May 1, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Totaro Imasaka, Kazuo Isaka, Toshikazu Ohnishi, Takeshi Miyazaki
  • Patent number: 6213834
    Abstract: A method for making an electron emission device, which includes a conductive film having an electron emitting section disposed between a pair of electrodes, includes a removal step for removing impurities in a organic substance, and a voltage-applying step for applying an voltage to the conductive film through the electrodes in an atmosphere containing the organic substance. The electron emission device is suitable for an electron beam source in an image forming apparatus.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: April 10, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshikazu Ohnishi, Masanori Mitome
  • Patent number: 6179678
    Abstract: An electron-emitting device comprises a pair of electrodes and an electroconductive film arranged between the electrodes and including an electron-emitting region carrying a graphite film. The graphite film shows, in a Raman spectroscopic analysis using a laser light source with a wavelength of 514.5 nm and a spot diameter of 1&mgr;m, peaks of scattered light, of which 1) a peak (P2) located in the vicinity of 1,580 cm−1 is greater than a peak (P1) located in the vicinity of 1,335 cm−1 or 2) the half-width of a peak (P1) located in the vicinity of 1,335 cm−1 is not greater than 150 cm−1.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: January 30, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumio Kishi, Masato Yamanobe, Takeo Tsukamoto, Toshikazu Ohnishi, Keisuke Yamamoto, Sotomitsu Ikeda, Yasuhiro Hamamoto, Kazuya Miyazaki
  • Patent number: 6169356
    Abstract: An electron-emitting device comprises a pair of oppositely disposed electrodes and an electroconductive film arranged between the electrodes and including a high resistance region. The high resistance region has a deposit containing carbon as a principal ingredient. The electron-emitting device can be used for an electron source of an image-forming apparatus of the flat panel type.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: January 2, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshikazu Ohnishi, Masato Yamanobe, Ichiro Nomura, Hidetoshi Suzuki, Yoshikazu Banno, Takeo Ono, Masanori Mitome
  • Patent number: 6160347
    Abstract: An electron source comprises one or more electron-emitting devices, especially of surface conduction type, and is provided with means for supplying an activating substance to the device(s). The means comprises preferably a substance source and a heater or electron beam generator for gasifying the substance source. The electron source can be combined with an image-forming member (e.g. fluorescent body) to constitute an image-forming apparatus. The means is used for in situ activation or re-activation of the electron-emitting device(s).
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: December 12, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Iwasaki, Toshikazu Ohnishi
  • Patent number: 6063453
    Abstract: An electron-emitting device having an electroconductive film including an electron-emitting region and arranged between a pair of electrodes is manufactured by forming an electroconductive film on a substrate and producing an electron-emitting region in the electroconductive film. The electroconductive film is formed on the substrate by heating the substrate in an atmosphere containing a gasified organic metal compound to a temperature higher than the decomposition of the gasified organic metal compound.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: May 16, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Tomida, Hisaaki Kawade, Masahito Niibe, Toshikazu Ohnishi, Yoshimasa Okamura
  • Patent number: 6054098
    Abstract: This invention provides an apparatus for measuring ozone in which interference effects of SO.sub.2 are intended to be reduced. This invention comprises a reference gas line for generating reference gas with ozone removed by allowing the sample gas to pass through the ozone decomposer with silver wool used as a catalyst, a sample gas line for introducing the sample gas as it is, an ozone analyzer to which the reference gas line and the sample gas line are connected via a selector valve and which measures the ozone component in the sample gas by introducing the reference gas and the sample gas alternately at specified intervals, and a temperature controller installed to the ozone decomposer for setting the catalyst reaction temperature to a range from 100 to 130.degree. C.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: April 25, 2000
    Assignee: Horiba, Ltd.
    Inventors: Junji Kato, Toshikazu Ohnishi
  • Patent number: 5846730
    Abstract: To provide a reagent with excellent stability under storage, which can detect a subject compound to be measured with higher specificity and sensitibity.Complexes of a compound represented by the general formula (I): ##STR1## (wherein R.sub.1 through R.sub.7 independently represent hydrogen atom, halogen atom, alkyl group, aryl group, aralkyl group, sulfonate group, amino group, styryl group, nitro group, hydroxyl group, carboxyl group, cyano group, or aryl azo group; R.sub.1 through R.sub.7 may or may not be bonded to each other to form a substituted or an unsubstituted condensed ring; F.sub.1 represents a divalent organic residue; and X.sub.1.sup..crclbar. represents an anion) and the like with immunoglobulin and the like are formed.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: December 8, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Miyazaki, Kazumi Tanaka, Tsuyoshi Santo, Toshikazu Ohnishi, Tetsuro Fukui, Tadashi Okamoto
  • Patent number: 5812227
    Abstract: The liquid crystal device is constituted by disposing a display layer between a pair of electrode plates. The display layer comprises a porous polymer material having open pores partially filled and a low-molecular weight mesomorphic compound impregnating the porous polymer material. The display layer is free from an unfilled portion of the low-molecular weight mesomorphic compound to be effective for providing a liquid crystal device showing a high transmittance and a good contrast. The display layer also comprises a three dimensional network structure coated with a polymer layer, and a low-molecular weight mesomorphic compound impregnating the three-dimensional network structure. The display layer is free from a fibrous part which is unstable against an applied voltage to be effective for providing a liquid crystal device showing no hysteresis.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: September 22, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yomishi Toshida, Kazuo Yoshinaga, Toshikazu Ohnishi, Koichi Sato, Takeo Eguchi, Tsuyoshi Shibata
  • Patent number: 5773828
    Abstract: A gas analyzer has a simple composition and can measure multi-components at a high accuracy. A plurality of measuring cells, including a case where the cells are different in length from each other, communicate sequentially with each other through a communication part to form a single gas path. A cut-on filter as an infrared penetration/reflection means for diffracting spectrally an infrared wavelength is provided on a light source side. A NO.sub.X measuring cell 3 having a cell length of about 60 mm and a CO.sub.2 measuring cell 7 having a cell length of about 1 mm which communicate through the communication part with each other, and a capacitor microphone (an infrared-ray detector for NO.sub.X) and a pyroelectric detector (an infrared-ray detector for CO.sub.2) are provided on the infrared penetration and reflection sides of the optical filter.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: June 30, 1998
    Assignee: Horiba, Ltd.
    Inventors: Shigeyuki Akiyama, Masahiko Fujiwara, Takuji Oida, Naohito Shimizu, Aritoshi Yoneda, Toshikazu Ohnishi
  • Patent number: 5700647
    Abstract: To provide a reagent with excellent stability under storage, which can detect a subject compound to be measured with higher specificity and sensitibity.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: December 23, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Miyazaki, Kazumi Tanaka, Tsuyoshi Santo, Toshikazu Ohnishi, Tetsuro Fukui, Tadashi Okamoto
  • Patent number: 5622634
    Abstract: An electron-emitting device comprising a pair of device electrodes and an electroconductive film including an electron-emitting region is manufactured by a method comprising a process of forming an electroconductive film including steps of forming a pattern on a thin film containing a metal element on the basis of a difference of chemical state, and removing part of the thin film on the basis of the difference of chemical state.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: April 22, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Noma, Seijiro Kato, Fumio Kishi, Hisaaki Kawade, Toshikazu Ohnishi, Michiyo Nishimura, Kumiko Uno, Takahiro Horiguchi, Masato Yamanobe
  • Patent number: 5601983
    Abstract: In a method for measuring a specified component in a specimen by reacting the specimen with a first reagent formed by binding a substance active to the specified component, with carrier particles and a second reagent formed by labelling a substance active to the specified component with a first label, and measuring the substances in the complexes obtained in the reaction, there is disclosed a method featured by labelling the carrier particles with a second label different from the first label, and detecting the second label and then the first label utilizing the detection of the second label as a trigger.This method enables a highly precise measurement without the influence of noise components in the detection of specified trace components in the specimen, utilizing an antigen-antibody reaction or a nucleic acid hybridization.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: February 11, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidehito Takayama, Matsuomi Nishimura, Kazumi Tanaka, Toshikazu Ohnishi, Takeshi Miyazaki
  • Patent number: 5599502
    Abstract: A minute flow path is filled with liquid so that the liquid may be supplied from an accumulating portion. Energy is imparted to the liquid exposed outwardly of an opening in the flow path by a heat generating element or by energy application to thereby heat and gasify the liquid. Thereupon, the liquid is supplied by an amount corresponding to the gasified liquid by capillary phenomenon through the flow path, and gasification is continuously effected, whereby a flow free of pulsating flow can be formed in the flow path.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: February 4, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Miyazaki, Matsuomi Nishimura, Kazuo Isaka, Kazumi Tanaka, Toshikazu Ohnishi, Yoshito Yoneyama, Hidehito Takayama
  • Patent number: 5591061
    Abstract: An electron-emitting device has a pair of device electrodes and an electroconductive thin film including an electron emitting region arranged between the electrodes. The device is manufactured via an activation process for increasing the emission current of the device. The activation process includes steps of a) applying a voltage (Vact) to the electroconductive thin film having a gap section under initial conditions, b) detecting the electric performance of the electroconductive thin film and c) modifying, if necessary, the initial conditions as a function of the detected electric performance of the electroconductive thin film.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: January 7, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Sotomitsu Ikeda, Masato Yamanobe, Hisaaki Kawade, Toshikazu Ohnishi, Tatsuya Iwasaki
  • Patent number: 5540858
    Abstract: A liquid crystal device is constituted by disposing a display layer between a pair of electrode plates. The display layer comprises a mesomorphic polymer and a low-molecular weight mesomorphic compound. The mesomorphic polymer may preferably be a main chain-type ferroelectric mesomorphic polymer having an ester linkage or a mesomorphic polymer derived from a polymerizable mesomorphic compound. The display layer may preferably comprise a ferroelectric mesomorphic polymer having a dielectric anisotropy .DELTA..epsilon. of -3.0 or below and a low-molecular weight mesomorphic compound incompatible with the mesomorphic polymer and having a positive dielectric anisotropy.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: July 30, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Yoshinaga, Hidetoshi Suzuki, Katsumi Kurematsu, Yomishi Toshida, Toshikazu Ohnishi, Hideaki Mitsutake, Nobuo Minoura, Koichi Sato, Takeo Eguchi
  • Patent number: 5512446
    Abstract: To provide a reagent with excellent stability under storage, which can detect a subject compound to be measured with higher specificity and sensitibity.Complexes of a compound represented by the general formula (I): ##STR1## (wherein R.sub.1 through R.sub.7 independently represent hydrogen atom, halogen atom, alkyl group, aryl group, aralkyl group, sulfonate group, amino group, styryl group, nitro group, hydroxyl group, carboxyl group, cyano group, or aryl azo group; R.sub.1 through R.sub.7 may or may not be bonded to each other to form a substituted or an unsubstituted condensed ring; R represents a divalent organic residue; and X.sub.1.sup..crclbar. represents an anion) and the like with immunoglobulin and the like are formed.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: April 30, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Miyazaki, Kazumi Tanaka, Tsuyoshi Santo, Toshikazu Ohnishi, Tetsuro Fukui, Tadashi Okamoto