Patents by Inventor Masahiro Washino

Masahiro Washino 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).

  • Degradable non-woven fabric and preparation process thereof
    Patent number: 5437918
    Abstract: A degradable non-woven fabric obtained from an web formed of lactic acid-based polymer filaments comprising of one or more lactic acid-based polymers selected from a poly (DL-lactic acid) having more than 80 mol % of L-lactic acid units, poly (DL-lactic acid) having more than 80 mol % of D-lactic acid units, L-lactic acid/hydroxycarboxylic acid copolymer having 70 mol % or more of L-lactic acid units, and D-lactic acid/hydroxycarboxylic acid copolymer having 70 mol % or more of D-lactic acid units, and a preparation process of the degradable non-woven fabric which has good dimensional stability and can be degraded and disappeared under natural environment when abandoned.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: August 1, 1995
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Keiko Taniguchi, Masahiro Washino, Shinobu Moriya, Hosei Shinoda, Masami Ohtaguro, Akihiro Funae, Shigeru Iimuro