Patents by Inventor Youzi Nagata

Youzi Nagata 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).

  • Lightweight paper and process for producing same
    Patent number: 4783240
    Abstract: A lightweight paper having a superior opacity and printing opacity is provided, which lightweight paper comprises dry pulp, 0.015 to 1.2% by weight based on the pulp of an alumina polymer and 0.5 to 30% by weight based on the pulp of a coaggregate formed from agglomerated particles of urea-formal-dehyde polymer (A) and agglomerated particles of hydrated silicic acid (B) in a ratio of (A):(B) of 5:95 to 95:5.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: November 8, 1988
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Akio Kurokawa, Naoyuki Ifuku, Kenzo Seita, Youzi Nagata