Patents by Inventor Koji Takemasa

Koji Takemasa 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).

  • Abrasive composition with an electrolytic water and a polishing process with the use of said abrasive composition
    Patent number: 5735729
    Abstract: An abrasive composition comprising abrasive grains of an inorganic material dispersed in a dispersion medium, characterized in that said dispersion medium contains an electrolytic water. A process for polishing an object using said abrasive composition.The abrasive composition enables to attain a high quality polish-finished surface at an improved polishing efficiency.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: April 7, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masatsune Kobayashi, Koji Takemasa