Patents by Inventor Katumi Shimizu

Katumi Shimizu 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).

  • Decorative sheet with changeable color or density
    Patent number: 5866233
    Abstract: A decorative sheet formed by a transparent sheet body having a certain thickness and having front and rear surfaces, the transparent sheet being simply provided on its front surface and rear surfaces with parallel striped patterns with predetermined pitches, to thereby produce a decorative sheet excellent in decorativeness with color tone or colors changeable with the angle of observation.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: February 2, 1999
    Assignee: Meiwa Gravure Co., Ltd.
    Inventors: Masahiro Oshima, Katumi Shimizu, Taturo Otani
  • Decorative sheet
    Patent number: 5723200
    Abstract: In a decorative sheet formed by a transparent sheet body having front and rear surfaces, a plurality of convex lens-shaped projections are provided on the front surface in an arbitrary continuous pattern, while figures are printed on the rear surface in the same pattern as that on the front surface, in displacement from the continuous pattern of the front surface, whereby a sheet of excellent decorativeness of which pattern is changeable with the direction of observation is provided in a simple structure at a low cost.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: March 3, 1998
    Assignee: Meiwa Gravure Co., Ltd.
    Inventors: Masahiro Oshima, Katumi Shimizu, Taturo Otani
  • Bright printed sheet
    Patent number: 5624732
    Abstract: The transparent plastic sheet is provided with the linearly extending convex lenses formed repeatedly, continuously and integrally therewith, on the surface side thereof, and the transparent printed layer formed on the back side thereof, to give the brightness with variously changing the sheet in color in dependence upon the angles of one's eyes relative to the plastic sheet, whereby improving the designing external appearance.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: April 29, 1997
    Assignee: Meiwa Gravure Co., Ltd.
    Inventors: Masahiro Oshima, Katumi Shimizu
  • Catalytic reactor
    Patent number: 4303618
    Abstract: Disclosed is a catalytic reactor in which a plurality of pipe-shaped catalysts are arranged, said reactor including a catalyst-supporting structure which is capable of varying the distance between the adjacent catalysts. Disclosed is also a method for constructing such a reactor, said method comprising optimally setting the distance between the adjacent catalysts from one operation to another.
    Type: Grant
    Filed: July 27, 1980
    Date of Patent: December 1, 1981
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Jun Fukui, Senji Niwa, Norihiro Kawashima, Kenro Ueshima, Katumi Shimizu