Patents by Inventor Masaji Moriwaki

Masaji Moriwaki 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).

  • Battery can with cutting-edge portion higher than cutting start portion, manufacturing method and manufacturing device therefore, and battery using the same
    Patent number: 8202646
    Abstract: A battery case is made by cutting from a blank case of a bottomed cylindrical battery case having an unwanted portion at an opening portion the unwanted portion from the case wall in the circumferential direction by a blade. The cutting of the case wall is performed so as to render a cutting-end portion higher than a cutting-start portion. Thus, re-cutting of the cutting-start portion by the blade after it has already completed one rotation can be avoided. As a result, the generation of thread-like chips from re-cutting of the cut surface can be avoided.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: June 19, 2012
    Assignee: Panasonic Corporation
    Inventors: Toshiki Ishikawa, Yoshio Goda, Tadahiro Tokumoto, Masaji Moriwaki, Seiichi Kato
  • BATTERY CAN, MANUFACTURING METHOD AND MANUFACTURING DEVICE THEREFOR, AND BATTERY USING THE SAME
    Publication number: 20100183911
    Abstract: A battery case is made by cutting from a blank case of a bottomed cylindrical battery case having an unwanted portion at an opening portion the unwanted portion from the case wall in the circumferential direction by a blade. The cutting of the case wall is performed so as to render a cutting-end portion higher than a cutting-start portion. Thus, re-cutting of the cutting-start portion by the blade after it has already completed one rotation can be avoided. As a result, the generation of thread-like chips from re-cutting of the cut surface can be avoided.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 22, 2010
    Inventors: Toshiki Ishikawa, Yoshio Goda, Tadahiro Tokumoto, Masaji Moriwaki, Seiichi Kato