Patents by Inventor Tatsuru Matsumoto

Tatsuru 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).

  • Publication number: 20240145285
    Abstract: A load port includes: a plate-shaped base member having an opening via which a transfer target object is loaded and unloaded; a door member capable of opening and closing the opening; a link mechanism including a link member having one end rotatably connected to the door member; a guide roller configured to move together with the door member; a guide surface bent to extend from a first direction to a second direction and configured to guide the guide roller; a drive member to which the other end of the link member is rotatably connected; and a driver configured to move the drive member in the second direction.
    Type: Application
    Filed: October 26, 2023
    Publication date: May 2, 2024
    Inventors: Tatsuru Ogawa, Yuki Ishihara, Shinpei Kogiso, Atsushi Suzuki, Yuki Matsumoto, Tatsuya Miura
  • Patent number: 6764797
    Abstract: A toner for MICR comprises at least a binder resin, magnetite particles comprising a mixture of granular magnetite and acicular magnetite, and a wax, wherein a ratio by weight of said acicular magnetite in said magnetite particles is 0.1-0.5 to the granular magnetite of 1.0, said magnetite particles are contained in an amount of 15-50% by weight in the toner, said granular magnetite has residual magnetization of 5-15 emu/g and saturation magnetization of 70-95 emu/g, and said acicular magnetite has residual magnetization of 20-50 emu/g and saturation magnetization of 70-95 emu/g.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: July 20, 2004
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Takayuki Sano, Tatsuru Matsumoto
  • Publication number: 20030044705
    Abstract: A toner for MICR comprises at least a binder resin, magnetite particles comprising a mixture of granular magnetite and acicular magnetite, and a wax, wherein a ratio by weight of said acicular magnetite in said magnetite particles is 0.1-0.5 to the granular magnetite of 1.0, said magnetite particles are contained in an amount of 15-50% by weight in the toner, said granular magnetite has residual magnetization of 5-15 emu/g and saturation magnetization of 70-95 emu/g, and said acicular magnetite has residual magnetization of 20-50 emu/g and saturation magnetization of 70-95 emu/g.
    Type: Application
    Filed: March 8, 2002
    Publication date: March 6, 2003
    Applicant: Tomoegawa Paper Co., Ltd.
    Inventors: Takayuki Sano, Tatsuru Matsumoto
  • Patent number: 5679615
    Abstract: A reversible heat-sensitive recording medium which includes at least a support and formed thereon a heat-sensitive recording layer including at least the following components: an electron-donating color-forming compound having a lactone ring, (b) an electron-accepting compound having a phenolic hydroxyl group, (c) at least one organic compound selected from compounds represented by formulae (I) to (V), and (d) a thermoplastic resin having an erasing action. The content of the thermoplastic resin having an erasing action is being from 15 to 70% by weight based on the total amount of components (a) to (d) Formulae (I) to (V) are as follows:R.sub.1 --CO--N(R.sub.2)R.sub.3 (I)R.sub.1 --CO--NH--R.sub.4 --NH--CO--R.sub.2 (II)R.sub.1 --CO--O--R.sub.2 (III)R.sub.1 --NH--CO--NH--R.sub.2 (IV)R.sub.1 --CO--R.sub.2 (V)wherein R.sub.1 represents an alkyl group, an aryl group, an alkenyl group, or a hydroxyalkyl group; R.sub.2 and R.sub.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: October 21, 1997
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Tatsuru Matsumoto, Kenichi Tanaka