Patents by Inventor Shigekazu Matsumoto

Shigekazu Matsumoto 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: 6488867
    Abstract: The present invention provides an organic fluorescent whitening pigment composition having an excellent hiding power as well as high whiteness, that inorganic pigment compositions cannot achieve, that is, comprising, as a pigment component, a complex salt (compound) represented by the following General Formula: in which X represents same or different hydrogen atom, methyl, ethyl, methoxy, ethoxy, sulfo group or chlorine atom, R1 represents an alkyl, alkenyl, aralkyl, aryl or cycloalkyl group, and R2, R3 and R4 independently represent hydrogen atom or R1, two or three groups of R2, R3 and R4 being capable of forming a heterocyclic group with nitrogen atom in each case.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: December 3, 2002
    Assignee: Hakkol Chemical Co., Ltd.
    Inventors: Shigekazu Matsumoto, Takao Yanagisawa, Shigehiro Matsumoto, Kunio Shimabukuro
  • Patent number: 6226455
    Abstract: A device for producing printed images of a subject is described. The device includes a housing containing an imaging apparatus, and a frame carrying a hood configured to exclude outside light from illuminating a subject. The frame is rotationally spring loaded and counterbalanced on the housing, allowing the frame to be pulled downward without pulling the housing over onto the subject. The hood is configured to indirectly illuminate the subject by reflecting light onto the subject. The imaging apparatus includes a camera configured to take subject image data (i.e., a picture of the subject), a device to provide component-image data (i.e., background, foreground or framing images) to be synthesized with the picture of the subject, a device to synthesize the picture with the component-images, and a printer to print the resulting synthesized images. A cassette unit that contains a plurality of read-only memory chips is removably plugged into the device.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: May 1, 2001
    Assignee: SNK Corporation
    Inventors: Kouichi Ishimoto, Hiroaki Kimura, Kenta Fujimoto, Hamao Horiguchi, Shigekazu Matsumoto, Kazukuni Hiraoka
  • Patent number: 6140477
    Abstract: A polyazo compound capable of effectively absorbing near-infrared rays, which can be produced from readily available raw materials is provided, which comprises at least one --OH group or at least one group derived from --OH group at p-position of the azo group in the molecule of the polyazo compound. This compound can be produced by diazotizing a substituted or nonsubstituted aromatic monocyclic or polycyclic compound or heterocyclic compound, each having a diazotizable primary amino group, and successively coupling the resulting diazo component with an azo component having a diazotizable primary amino group, the last azo component being such that --OH group or a group derived from --OH group be present at p-position to the azo group resulting from the azo component.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: October 31, 2000
    Assignee: Hakkol Chemical Co., Ltd.
    Inventors: Shigekazu Matsumoto, Takao Yanagisawa, Shigehiro Matsumoto, Kunio Shimabukuro
  • Patent number: 5606055
    Abstract: A novel organic white pigment which can be applied to an organic white pigment composition useful as a paper coating agent or an aqueous or oily ink or paint is provided. This organic white pigment consists of an alkylene-bismelamine derivative, represented by the following general formula (I), ##STR1## wherein R is a hydrogen atom or a lower alkyl group containing 1 to 4 carbon atoms or alicyclic group, R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are respectively same or different hydrogen atoms or lower alkyl groups containing 1 to 4 carbon atoms, R.sub.1, and R.sub.2, or R.sub.3, and R.sub.4 may respectively form heterocyclic groups with nitrogen atoms and X is a lower alkylene group containing 2 to 3 carbon atoms.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: February 25, 1997
    Assignee: Hakkol Chemical Co., Ltd.
    Inventors: Shigekazu Matsumoto, Takao Yanagisawa
  • Patent number: 5514213
    Abstract: A novel organic white pigment which can be applied to an organic white pigment composition useful as a paper coating agent or an aqueous or oily ink or paint is provided. This organic white pigment consists of an alkylenebismelamine derivative, represented by the following general formula (I), ##STR1## wherein R is a hydrogen atom or a lower alkyl group containing 1 to 4 carbon atoms or alicyclic group, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are respectively same or different hydrogen atoms or lower alkyl groups containing 1 to 4 carbon atoms, R.sub.1 and R.sub.2, or R.sub.3 and R.sub.4 may respectively form heterocyclic groups with nitrogen atoms and X is a lower alkylene group containing 2 to 3 carbon atoms.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: May 7, 1996
    Assignee: Hakkol Chemical Co., Ltd.
    Inventors: Shigekazu Matsumoto, Takao Yanagisawa
  • Patent number: 5497461
    Abstract: A main CPU in a data transmitting section applies a packet number recorded in a packet number memory to a block data when transmitting the latter, and increments and updates the packet number upon completion of the transmission. A sub-CPU in a data receiving section determines whether the packet number applied to the block data received is the updated number or not, in order to determine whether the data is a re-transmission of previous data or a transmission of new data. If the block data received is a re-transmission of previous data, the data received previously is discarded. If the block data received is new data, the data received previously is processed.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: March 5, 1996
    Assignee: Irem Corporation
    Inventors: Shigekazu Matsumoto, Masakazu Furuta
  • Patent number: 5263715
    Abstract: A dice displaying apparatus for a computer game machine includes a trackball operable by each player. Rolling speeds of two dice are derived from an amount and direction of operation of the trackball. Rolling angles of the dice are also derived from the amount and direction of operation of the trackball, with slight angles derived from random numbers added thereto. Display positions for the respective dice are determined every predetermined intervals of time from the rolling speeds and rolling angles. Image patterns of varied phases of rolling dice corresponding to the rolling angles are presented in the respective display positions on CRT displays.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: November 23, 1993
    Assignee: Irem Corporation
    Inventors: Shigekazu Matsumoto, Hiroyoshi Hashimoto