Patents by Inventor Makabe Yasushi

Makabe Yasushi 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).

  • Texturing method
    Patent number: 5899794
    Abstract: A method for polishing or texturing a magnetic disc, comprises bringing a tape traveled in a predetermined direction and made of fibers having a fineness of not more than 0.1 denier, and a slurry containing polishing grains dispersed therein, into contact with a substrate of the magnetic disc. Such method has an extremely low surface roughness (Ra) and an extremely low maximum projection height (Rp) with an excellent high accuracy, thereby efficiently producing a magnetic recording medium which is free from head crash and errors upon reading and writing of information.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: May 4, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomoo Shige, Masataka Yokoyama, Makabe Yasushi