Patents by Inventor Kin-ya Hiyoshi

Kin-ya Hiyoshi 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).

  • Method of producing watermark paper
    Patent number: 5766416
    Abstract: A method of producing watermark paper comprising forming a patterned wire by fixing and bonding a lace to a cloth wire for papermaking, fitting this patterned wire to a cylinder mould of a cylinder-vat machine or a dandy roll as a face wire, and making paper by using the cylinder mould or the dandy roll to which the patterned wire is fitted. This method can easily and economically produce watermark paper having a delicate and complicated lace pattern in excellent gradation.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: June 16, 1998
    Assignee: Tokushu Paper Manufacturing Co., Ltd.
    Inventors: Kin-ya Hiyoshi, Takayuki Fukuchi, Tadahiro Iwasaki