Patents by Inventor Tadashi Yoshida

Tadashi Yoshida 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: 4731361
    Abstract: An oral antibacterial, 7beta-[(Z)-2-(2-aminothiazol-4-yl)-2-alkenoylamino]-3-cephem-4-carboxylic acid pharmaceutically acceptable ester represented by the following formula: ##STR1## (wherein R is amino or protected amino,R.sup.1 is straight, branched, or cyclic alkyl optionally substituted by alkoxy,R.sup.2 is hydrogen or a 3-substitutent of cephalosporins,R.sup.3 is a pharmaceutically acceptable ester group, andX is sulfur or sulfinyl).
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: March 15, 1988
    Assignee: Shionogi & Co., Ltd.
    Inventors: Yoshio Hamashima, Koji Ishikura, Kyoji Minami, Tadatoshi Kubota, Tadashi Yoshida
  • Patent number: 4719490
    Abstract: A color image processing apparatus comprising an input unit which receives a plurality of color component signals in parallel. A color correction device receives the plurality of color component signals and a signals representing the kind of a corrected color signal and outputs a selected kind of corrected color signal in order to sequentially obtain different corrected color signals for respective colors from the plurality of color component signals. A color image forming device forms respective color images sequentially using the corrected color signals output from the color correction device.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: January 12, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadashi Yoshida, Naoto Kawamura, Tohru Takahashi
  • Patent number: 4700399
    Abstract: A color image processing apparatus comprises a detector for detecting an edge of an image and a control unit for controlling a black reproduction quantity for the edge in accordance with an output of the detector.
    Type: Grant
    Filed: June 5, 1985
    Date of Patent: October 13, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadashi Yoshida
  • Patent number: 4689694
    Abstract: There is disclosed a recording apparatus with plural light-emitting elements. The elements are divided into plural groups, and in each group plural light-emitting elements receive image signals simultaneously to improve print quality in relation to subsidiary scanning. Also each light-emitting element is intensity modulated to reproduce a halftone image without the use of dither process.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: August 25, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadashi Yoshida
  • Patent number: 4626923
    Abstract: An image processing apparatus has a decoder for decoding input image data, a pulse width modulation circuit for producing a signal for pulse width modulation of a laser beam from a laser diode in accordance with decoded image data, and latch circuits to delay the output signal from the pulse width modulation circuit. The apparatus produces a half tone image with the center of each dot of each different size coinciding with that of a pixel.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: December 2, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadashi Yoshida
  • Patent number: 4617596
    Abstract: An image processing apparatus having an input unit for entering image information, a setting unit for setting the processing conditions for processing the image information entered from the input unit, and a processor for processing the image information entered from the input unit according to certain processing conditions, wherein the setting unit is adapted to set numerical data included in the processing conditions in the form of variables.
    Type: Grant
    Filed: September 29, 1983
    Date of Patent: October 14, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadashi Yoshida, Katsuichi Shimizu, Shinobu Arimoto, Katsuyoshi Maeshima, Nao Nagashima, Asao Watanabe
  • Patent number: 4609927
    Abstract: An image recording apparatus capable of responding to high-speed input image signals by dividedly storing image signals of a line into plural memory units, for parallel output, for example, thus achieving higher speed of signal storage than the speed of signal readout.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: September 2, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadashi Yoshida
  • Patent number: 4592504
    Abstract: A hot-water storage type hot-water supply apparatus operates under a natural circulation principle wherein hot-water is accumulated within a hot-water tank by circulating cold water or hot-water contained therein through a first circulation pipe connected to the bottom thereof, a heat exchanger, and a second circulation pipe. A thermal valve is mounted in the second circulation pipe downstream of the heat exchanger such that its opening area is varied depending upon the hot-water temperature in the second circulation pipe so as to maintain the temperature of the hot-water flowing out of the heat exchanger at a substantially constant temperature, resulting in the temperature distribution of the hot-water within the tank at the time of its boiling being kept substantially constant throughout the storage tank instantaneously at the start of the boiling of the hot-water.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: June 3, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tadashi Yoshida
  • Patent number: 4555314
    Abstract: A tin-lead alloy plating bath based on a principal plating bath comprising an alkanesulfonic or alkanolsulfonic acid and both bivalent tin and lead salts thereof is characterized by the addition of a guanamine compound having the general formula ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, represent each a hydrogen atom, C.sub.1-18 straight- or branched-chain alkyl radical, C.sub.1-18 straight- or branched-chain alkoxy-lower alkyl radical, or a C.sub.3-7 cycloalkyl radical, or R.sub.1 and R.sub.2 may combine to form a carbon cycle or hetero cycle, and A represents a lower alkylene radical.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: November 26, 1985
    Assignees: Obata, Dohi, Daiwa Fine Chemicals Co. Ltd., Ishihaa Chemical Co., Ltd.
    Inventors: Keigo Obata, Nobuyasu Dohi, Yoshiaki Okuhama, Seishi Masaki, Yukiyoshi Okada, Tadashi Yoshida
  • Patent number: 4554592
    Abstract: An image forming apparatus capable of eliminating unnecessary images other than the original image has a solid-state scanning device for reading an original and providing corresponding image information, a recording unit for recording on a recording sheet according to said image information, identifying unit for identifying the size of the original according to the output signals from said solid-state scanning device, and selector for selecting a recording sheet in said recording unit according to the identified size of the original.
    Type: Grant
    Filed: October 20, 1983
    Date of Patent: November 19, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadashi Yoshida
  • Patent number: 4517606
    Abstract: A video signal processing apparatus for encoding video into binary signals employs dither coding. The apparatus comprises a device for setting a plural number of divided areas of an original image and a processing circuit for processing video signals corresponding to the respective divided areas using different dither patterns.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: May 14, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshikazu Yokomizo, Takehiko Shibata, Katsuichi Shimizu, Ken Miyagi, Akira Suzuki, Tadashi Yoshida, Masaharu Tsukata, Koichi Murakami, Nao Nagashima
  • Patent number: 4459619
    Abstract: An image reading apparatus utilizing plural solid-state imaging devices, in which the boundaries of the mutually overlapping image reading areas of said imaging devices are detected to remove such overlapping with a simple processing.
    Type: Grant
    Filed: January 13, 1982
    Date of Patent: July 10, 1984
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadashi Yoshida
  • Patent number: 4439790
    Abstract: An image forming apparatus capable of eliminating unnecessary images other than the original image has a solid-state scanning device for reading an original and providing corresponding image information, a recording unit for recording on a recording sheet according to said image information, identifying unit for identifying the size of the original according to the output signals from said solid-state scanning device, and selector for selecting a recording sheet in said recording unit according to the identified size of the original.
    Type: Grant
    Filed: January 13, 1982
    Date of Patent: March 27, 1984
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadashi Yoshida
  • Patent number: 4376770
    Abstract: 7.beta.-(2-Cyano-aliphatic acylamino)-7.alpha.-methoxy-3-heterocyclic thiomethyl-1-dethia-1-oxa-3-cephem-4-carboxylic acids and salts or pharmacologically acceptable esters generically represented by the following formula are potent antibacterials and esters are prospective oral drugs: ##STR1## (wherein A is a lower alkyl, lower alkenyl or lower alkynyl group;B is a hydrogen atom, salt forming atom, salt forming group or physiologically hydrolyzable ester group; andHet is a heterocyclic group).
    Type: Grant
    Filed: July 23, 1981
    Date of Patent: March 15, 1983
    Assignee: Shionogi & Co., Ltd.
    Inventors: Masayuki Narisada, Tetso Okada, Tadashi Yoshida, Shinzo Matsuura
  • Patent number: 4292241
    Abstract: A new antibiotic having .beta.-lactamase inhibitory activity, PA-31088-IV, being useful as a medicament and a veterinary drug for inhibiting the growth of gram-positive and gram-negative phathogenic microorganisms and a process for preparing the same, being characterized by cultivating Streptomyces tokunonensis sp. nov. in a suitable medium and recovering PA-31088-IV from the cultured broth.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: September 29, 1981
    Assignee: Shionogi & Co., Ltd.
    Inventors: Kentaro Tanaka, Jun'ichi Shoji, Yoshimi Kawamura, Teruo Hattori, Eiji Kondo, Kouichi Matsumoto, Tadashi Yoshida, Naoki Tsuji