Patents by Inventor Kenji Sano

Kenji Sano 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).

  • Patent number: 4581311
    Abstract: A photoconductive composition is disclosed which contains an organic photoconductor and a vinylidene chloride-acrylonitrile copolymer. Furthermore, there is disclosed an electrophotographic photoreceptive material using such a photoconductive composition as its photoreceptive layer. The material has improved flexibility while maintaining desirable electrophotographic characteristics.
    Type: Grant
    Filed: May 7, 1985
    Date of Patent: April 8, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shunichi Kondo, Kenji Sano, Hideo Sato
  • Patent number: 4500623
    Abstract: Photoconductive compositions composed of an organic photoconductor or a dye-sensitized organic photoconductor are disclosed. The compositions have their sensitivity increased by the addition of a thioamide compound to the photoconductive composition. The photoconductive compositions are used in constructing electrophotographic light-sensitive materials having sufficiently high sensitivity for practical use. Various specific thioamide compounds which have been found to be effective are disclosed.
    Type: Grant
    Filed: December 14, 1982
    Date of Patent: February 19, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenji Sano, Syunichi Kondo, Hideo Sato
  • Patent number: 4499167
    Abstract: Photoconductive compositions composed of an organic photoconductor or a dye-sensitized organic photoconductor are disclosed. The composition have their sensitivity increased by the addition of an amide compound to the photoconductive composition. The photoconductive compositions are used in constructing electrophotographic light-sensitive materials having sufficiently high sensitivity for practical use. Various specific amide compounds which have been found to be effective are disclosed.
    Type: Grant
    Filed: December 14, 1982
    Date of Patent: February 12, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenji Sano, Syunichi Kondo, Hideo Sato
  • Patent number: 4487897
    Abstract: A process for polymerizing acrylic monomers is disclosed. The process involves providing a reactor which is generally in the shape of a screw type reactor having temperature control means thereon. The reactor is continually charged with a supply of acrylic monomers having a viscosity of 10 poises or less at ordinary temperature. The acrylic monomers are continually moved through the reactor by turning of the screw within the reactor in order to cause the acrylic monomers to continually contact renewed surfaces within the reactor. The temperature in the reactor is controlled within two or more zones within the reactor in order to increase the viscosity of the acrylic monomers in the reactor by rapid polymerization within an initial area and then allow polymerization to proceed to one or more additional areas in the reactor to a prescribed rate of conversion. Polymerized product is continuously removed from the reactor.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: December 11, 1984
    Assignee: Nitto Electric Industrial Co., Ltd.
    Inventors: Naoki Matsuoka, Hiroshi Matsumoto, Yutaka Hori, Yoshio Miki, Kenji Sano, Ichiro Ijichi
  • Patent number: 4471347
    Abstract: A circuit for driving a display comprises a condenser element for maintaining a voltage, the number of condenser elements corresponding to the number of picture elements of the display, a first switch for applying a voltage to the condenser element, a second switch for driving each of the picture elements according to the voltage maintained by the condenser element, and a third switch for testing said circuit by monitoring the voltage developed across said condenser element.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: September 11, 1984
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nobuo Nakazawa, Kenji Sano, Seiji Kimura
  • Patent number: 4461821
    Abstract: A light-sensitive organic photoconductorcontaining photoconductive composition for electrophotography is disclosed. The composition has greatly increased light sensitive created by the incorporation of a thiourea compound. The photoconductive composition may further contain a sensitizing dye capable of increasing the sensitivity of the organic photoconductor.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: July 24, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenji Sano, Syunichi Kondo, Hideo Sato
  • Patent number: 4448869
    Abstract: A photoconductive composition comprising an organic photoconductive substance and at least one compound represented by the general formula (I) or (II) ##STR1## wherein X is an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, an alkoxyl group, a substituted alkoxyl group, an aryloxyl group, or a substituted aryloxy group, n and m are each an integer of 1 or 2, and l and k are each an integer of from 1 to 4, and, optionally, a sensitizing dye capable of increasing the sensitivity of the organic photoconductive substance, and an electrophotographic light-sensitive material comprising a support having an electrically conductive surface and a layer of the photoconductive composition layer on the support. This electrophotographic light-sensitive material has sensitivity and superior stability with time.
    Type: Grant
    Filed: March 4, 1983
    Date of Patent: May 15, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Syun-ichi Kondo, Kenji Sano, Hideo Sato
  • Patent number: 4447515
    Abstract: A photoconductive composition is disclosed which is comprised of an organic photoconductor and a diacylamine compound. The composition may also contain a sensitizing dye for sensitizing the organic photoconductor. In addition there is disclosed an electrophotographic light-sensitive material having on a conductive support a photoconductive light-sensitive layer composed of the foregoing photoconductive composition. The addition of the diacylamine compound greatly increases the light sensitivity of the photoconductive composition containing an organic photoconductor.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: May 8, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Syun-ichi Kondo, Kenji Sano, Hideo Sato
  • Patent number: 4444863
    Abstract: A photoconductive composition and an electrophotographic light-sensitive material prepared using the photoconductive composition are described. The photoconductive composition comprises an organic photoconductive material and a urea compound, and may further contain a sensitizing dye capable of increasing the light sensitivity of the organic photoconductive material. The electrophotographic light-sensitive material comprises a support having an electrically conductive surface and a layer of the photoconductive composition, provided on the support. Typical urea compounds as used herein are represented by the general formula (I) or (II): ##STR1## (wherein all the symbols are described in the specification). The use of the urea compound increases the sensitivity of the organic photoconductive material making it possible to use the organic material in connection with the preparation of electrophotographic light-sensitive materials.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: April 24, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenji Sano, Syunichi Kondo, Hideo Sato
  • Patent number: 4015107
    Abstract: Pulse signals of different weights are introduced from different input terminals into the present count system in a parallel fashion, respectively. Each number of the pulse signals of different weights are counted in a binary code notation. There is provided a weight information generator which generates weight signals, in a binary coded decimal notation, dependent upon the weight of the weighted pulse signals. Each of the weight signals are repeatedly added, each number of the repetition being identical with the counted number of the pulse signals of different weights introduced into the present system. A desired information may be obtained by totaling the results of these additions.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: March 29, 1977
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinichi Tanaka, Kenji Sano, Seiji Kimura
  • Patent number: 4000411
    Abstract: A MOS logic circuit includes a source follower circuit arrangement consisting of a driver MOS element, in addition to a transfer MOS element, an inverter MOS element and a load MOS element. The transfer MOS element receives input signals at its source and produces output signals at its drain, the output signals being applied to the gate of the driver MOS element contained within the source follower circuit arrangement. The resulting output signals developed at the source of the driver MOS element are supplied to the inverter MOS element. This permits the slice or boundary level between the logical 1 and 0 to be higher than the given threshold level of the MOS elements.
    Type: Grant
    Filed: April 23, 1975
    Date of Patent: December 28, 1976
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kenji Sano, Hiroaki Arai
  • Patent number: 3986333
    Abstract: The present disclosure is directed to an electronic digital clock made up of electronic components without using a chain of counters. The digital clock utilizes shift registers with a recirculation path for storing the time information as to hours, minutes and/or seconds and a computing circuit for repeatedly adding the time information one by one in accordance with a predetermined clock base frequency.
    Type: Grant
    Filed: June 14, 1974
    Date of Patent: October 19, 1976
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Seiji Kimura, Kenji Sano, Nobuo Nakazawa