Patents by Inventor Suguru Yazawa

Suguru Yazawa 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: 9090784
    Abstract: A solid drawing material with which it is possible to smoothly and darkly draw on a smooth non-absorbing surface, as well as on conventional high-quality paper, drawing paper, or copy paper, and with which it is also possible to draw darkly and clearly on a transparent flat surface, and to easily erase a drawing on these non-absorbing surfaces using a fabric, paper, or whiteboard eraser. A solid drawing material containing at least a resin component, a wax component, a pigment, titanium dioxide, and a filler, wherein the resin component includes rosin and/or modified rosin in an amount that is within the range of 0.5 to 20 wt %, and the wax component includes a glycerin fatty acid ester and/or pentaerythritol fatty acid ester, both fatty acid esters having a melting point of 45° C. or higher, in an amount that is within the range of 8 to 50 wt %.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: July 28, 2015
    Assignee: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Katsunori Kitazawa, Suguru Yazawa, Masaaki Matsumoto
  • Publication number: 20130177345
    Abstract: A solid drawing material with which it is possible to smoothly and darkly draw on a smooth non-absorbing surface, as well as on conventional high-quality paper, drawing paper, or copy paper, and with which it is also possible to draw darkly and clearly on a transparent flat surface, and to easily erase a drawing on these non-absorbing surfaces using a fabric, paper, or whiteboard eraser. A solid drawing material containing at least a resin component, a wax component, a pigment, titanium dioxide, and a filler, wherein the resin component includes rosin and/or modified rosin in an amount that is within the range of 0.5 to 20 wt %, and the wax component includes a glycerin fatty acid ester and/or pentaerythritol fatty acid ester, both fatty acid esters having a melting point of 45° C. or higher, in an amount that is within the range of 8 to 50 wt %.
    Type: Application
    Filed: August 5, 2011
    Publication date: July 11, 2013
    Applicant: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Katsunori Kitazawa, Suguru Yazawa, Masaaki Matsumoto
  • Patent number: 6955491
    Abstract: A marking pen having an excellent cap-off performance which comprises at least a colorant, a solvent and a resin and, if necessary, an erasability-providing agent as ink components and in which a pen tip comprising a fibrous feed or a plastic feed is coated with a coating agent comprising a substance providing a cap-off property, wherein the above coating agent comprises petroleum waxes comprising hydrocarbons having side chains as a principal component (50% by weight or more). Preferably, the above petroleum waxes comprising hydrocarbons having side chains as a principal component have a melting point of 63° C. or lower and are solid at room temperature.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: October 18, 2005
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Takahiro Osada, Suguru Yazawa
  • Patent number: 6734233
    Abstract: A solid adhesive composition which has an excellent applying performance even after an applying part of the solid adhesive is left to stand in the atmosphere for a long time and which is excellent in a cap-off performance and which comprises at least an adhesive component, a gelling agent and a solvent, wherein contained in the above composition are at least one selected from the group consisting of waxes such as paraffin waxes and olefin waxes which are a solid at room temperature and have a solubility of 20% or less in the solvent at room temperature and/or a substance absorbing moisture contained at least in the atmosphere and/or the adhesive composition to form an evaporation-inhibiting film.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: May 11, 2004
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Suguru Yazawa, Takahiro Osada
  • Publication number: 20040067093
    Abstract: A marking pen having an excellent cap-off performance which comprises at least a colorant, a solvent and a resin and, if necessary, an erasability-providing agent as ink components and in which a pen tip comprising a fibrous feed or a plastic feed is coated with a coating agent comprising a substance providing a cap-off property, wherein the above coating agent comprises petroleum waxes comprising hydrocarbons having side chains as a principal component (50% by weight or more). Preferably, the above petroleum waxes comprising hydrocarbons having side chains as a principal component have a melting point of 63° C. or lower and are solid at room temperature.
    Type: Application
    Filed: June 23, 2003
    Publication date: April 8, 2004
    Inventors: Takahiro Osada, Suguru Yazawa
  • Publication number: 20030004255
    Abstract: A solid adhesive composition which has an excellent applying performance even after an applying part of the solid adhesive is left to stand in the atmosphere for a long time and which is excellent in a cap-off performance and which comprises at least an adhesive component, a gelling agent and a solvent, wherein contained in the above composition are at least one selected from the group consisting of waxes such as paraffin waxes and olefin waxes which are a solid at room temperature and have a solubility of 20% or less in the solvent at room temperature and/or a substance absorbing moisture contained at least in the atmosphere and/or the adhesive composition to form an evaporation-inhibiting film.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 2, 2003
    Inventors: Suguru Yazawa, Takahiro Osada