Patents by Inventor Yoshirou Sawai

Yoshirou Sawai 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).

  • Insectproofing fibers and method for preparing the same
    Patent number: 5238682
    Abstract: Insectproofing fibers are disclosed in which the surface of the fibers is coated with a mixture of an organic insectproofing agent, an organic insectproofing agent included in a monomer-trimer type cyclodextrin having an average molecular weight of 3000 or less and an organopolysiloxane, and the interior of the fibers is also impregnated with the mixture. The insectproofing fibers have an insectproofing effect against bugs for a long period of time and the effect is durable.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: August 24, 1993
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Masanori Akasaka, Yoshirou Sawai, Kunio Iwase, Hideki Moriishi