Patents by Inventor Noboru Ishizu

Noboru Ishizu 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).

  • Process and apparatus for production of toilet paper rolls having no core
    Patent number: 5407509
    Abstract: Rolls of toilet paper are produced by winding a paper web around each of a plurality of air permeable cylindrical cores each having a fixed, outer diameter while applying a liquid to only a leading portion of each web so that wound webs each having a wet inner portion are formed. After drying the wound webs to integrally bind the inner portion, the core is separated from each of the wound webs.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: April 18, 1995
    Assignee: Ishizu Machinery Co., Ltd.
    Inventors: Noboru Ishizu, Teruo Takahashi, Tomoyuki Shinohara
  • Process and apparatus for production of toilet paper rolls having no core
    Patent number: 5352319
    Abstract: Rolls of toilet paper are produced by winding a paper web around each of a plurality of air permeable cylindrical cores each having a fixed, outer diameter while applying a liquid to only a leading portion of each web so that wound webs each having a wet inner portion are formed. After drying the wound webs to integrally bind the inner portion, the core is separated from each of the wound webs.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: October 4, 1994
    Assignee: Ishizu Machinery Co., Ltd.
    Inventors: Noboru Ishizu, Teruo Takahashi, Tomoyuki Shinohara