Patents by Inventor Tutomu Naruse

Tutomu Naruse 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).

  • Patent number: 4525404
    Abstract: An artificial fur-like pile article is a cloth-like fibrous structure provided with piles having a length of more than 10 mm, each pile composed of a non-attenuated portion where the fineness does not substantially vary in the length direction, an attenuated portion where the fineness is gradually reduced toward the top end and a fine top end,(a) the non-attenuated portion being composed of a core-sheath composite fiber having a flatness ratio of 1.5-5 and a fineness of 8-50 d, and having 1-4 wing-shaped projections in cross-section,(b) the top end being formed of an exposed core of the composite fiber and having a substantially uniform fineness of an average diameter of 5-25 .mu.m and a length of 0.3-5 mm and(c) the attenuated portion having a length of 1-15 mm.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: June 25, 1985
    Assignees: Kanebo, Ltd., Kanebo Synthetic Fibers, Ltd.
    Inventors: Masao Matsui, Kazuo Okamoto, Tutomu Naruse