Patents by Inventor Masaki Hamada

Masaki Hamada 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: 4955064
    Abstract: A graphic edge extracting apparatus includes a memory unit for storing graphic image data and a graphic edge pixel extracting unit for developing the graphic image data on a bit plane in a bit map memory in the memory unit and executing bitblt (bit block transfer: synthesis during drawing) processing a plurality of times, thereby extracting inner edge pixels of the graphic image.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: September 4, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akifumi Shirasaka, Kunio Seto, Masaki Hamada, Yukari Shibuya
  • Patent number: 4953108
    Abstract: A document processor receives a document prepared by a different type of device, recognizes and registers a table in the document. It composes and outputs a document with the original form of the table being maintained.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: August 28, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahiro Kato, Masaki Hamada, Hiroshi Takakura, Yukari Shibuya
  • Patent number: 4837847
    Abstract: An image processing apparatus for correcting shape errors when a graphic image to which contour line data was given is painted and developed comprises: an input device to input contour line data of image information; a circuit to make a contour line pattern of the image information on the basis of the contour line data; a circuit to make a painted pattern in which the inside of the contour line pattern was painted; a circuit to narrow the painted pattern; and a contour line correcting circuit to obtain the exclusive-OR of the narrowed painted pattern and the contour line pattern. The contour line pattern is eliminated from the painted pattern by the narowing circuit. The contour line correcting circuit has a converter to convert the contour line pattern in correspondence to the drawing direction of the contour line pattern and obtains the exclusive-OR of the converted contour line pattern and the painted pattern.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: June 6, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akifumi Shirasaka, Kensaku Tanaka, Masaki Hamada
  • Patent number: 4545993
    Abstract: Heterocyclic compounds comprising the formula (I): ##STR1## wherein: R.sub.1, R.sub.2, R.sub.4 and R.sub.5 each are hydrogen or a lower alkyl group;R.sub.3 is hydrogen, a halogen, an alkyl group, a haloalkyl group, an alkoxy group, an alkenyl group, an alkenyloxy group, an aryl group, an aryloxy group, an acyl group or a nitro group;and the broken line connotes a single or double bond at the C.sub.3 -C.sub.4 position, provided that when the broken line connotes a single bond, R.sub.3 is other than hydrogen; and pharmaceutically acceptable salts thereof,exhibiting antiinflammatory, antipyretic and analgesic action.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: October 8, 1985
    Assignee: Nippon Zoki Pharmaceutical Co. Ltd.
    Inventors: Kaoru Okamoto, Masaki Hamada, Teikichi Kurosaki