Patents by Inventor Tsuneyoshi Wakui

Tsuneyoshi Wakui 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).

  • Patterned metal plate and production thereof
    Patent number: 4978583
    Abstract: An uneven patterned metal strip or plate is formed with an uneven pattern as a surface decorative pattern. The pattern is constituted of one or more pattern unit containing a plurality of uneven dot. Each of the uneven dots has a size D. The uneven dots are arranged in a predetermined density to have given ratio .eta. of occupying area versus plane area in said pattern unit. The size D and area ratio .eta. being in a range of:10.ltoreq.D.ltoreq.300 (.mu.m)30.ltoreq..eta..ltoreq.100 (%)and the size of said pattern unit has minimum length of 1 mm.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: December 18, 1990
    Assignee: Kawasaki Steel Corporation
    Inventors: Tsuneyoshi Wakui, Takeo Ohnishi, Yuji Shimoyama, Hideo Kuguminato, Fumio Kosumi, Tadaaki Yasumi, Hironobu Ohno, Toshio Akizuki, Fumiya Yanagishima
  • Steel sheets for drawing and ironing worked cans
    Patent number: 4783378
    Abstract: A steel sheet for DI can having improved DI workability and resistance to die abrasion has such a surface profile that a center-line average surface roughness is within a range of 0.1.about.4.0 .mu.m and a microscopic shape is comprised of mountain portions, groove-like valley portions and middle flat portions satisfying particular dimension relations.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: November 8, 1988
    Assignee: Kawasaki Steel Corporation
    Inventors: Tsuneyoshi Wakui, Takeo Ohnishi, Yuji Shimoyama, Toshio Akizuki