Patents by Inventor Sasaki Yoshiyuki

Sasaki Yoshiyuki 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: 4505100
    Abstract: A fasciated yarn, consisting of wholly aromatic polyamide fibers, which is excellent in mechanical properties, especially in creep durability in a high temperature atmosphere and is suitably utilized for industrial usage. The yarn can be produced by a method comprising the steps of: stretch-breaking a filament tow of the wholly polyamide fibers to form a staple fiber bundle and imparting a false-twist to the staple fiber bundle by a vortex while retaining parallelism of the staple fibers composing the bundle, thereby obtaining the fasciated yarn. Structural characteristics of the yarn reside in a mean fiber length in the range of from 150 mm to 600 mm, a crimpability of less than 5%, a mean degree of parallelism of less than 3.degree., and a number of wrap fiber groups in a range of from 0.5 to 20 per 1 cm in length of the yarn.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: March 19, 1985
    Assignee: Teijin Limited
    Inventors: Sasaki Yoshiyuki, Matsumoto Mitsuo