Patents by Inventor Akimicu Ohuchi

Akimicu Ohuchi 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).

  • Woven fabric high-purity alumina continuous filament, high-purity alumina filament for production thereof, and processes for production of woven fabric and continuous filament
    Patent number: 5145734
    Abstract: Disclosed are a high-purity alumina continuous filament woven fabric comprising a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m, a hybrid woven fabric comprising this high-purity alumina continuous filament and a high-strength continuous filament having a tensile stength of at least 200 kg/mm.sup.2, processes for the preparation of these woven fabrics, a high-purity alumina continuous filament valuable for the production of these woven fabrics, and a process for the preparation of this high-purity alumina continuous filament. These woven fabrics are very useful as a reinforcing fibrous substrate of a fiber-reinforced composite material or as a heat-insulating material.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: September 8, 1992
    Assignees: Kanebo Limited, Mitsui Mining Company, Limited
    Inventors: Takashi Ito, Osamu Iwasaki, Akimicu Ohuchi, Koichiro Otomo, Yoshiaki Saito