Patents by Inventor Nobuo Watabe

Nobuo Watabe 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).

  • Moisture-permeable sheets
    Patent number: 4507356
    Abstract: A multi-layer sheet used particularly as a wig base includes a lowermost layer of a poly-.alpha.-amino acid derivative, an uppermost layer of a polyurethane elastomer and woven or knitted fabric of nylon or polyester as reinforcing material, said layer of polyurethane elastomer alone or both said layer of polyurethane elastomer and said layer of poly-.alpha.-amino acid possessing moisture permeability.To prepare the sheet, finely-divided, water-soluble salt particles are dispersed in the polyurethane elastomer alone or both in the polyurethane elastomer and the amino acid derivative in the presence of a titanate coupling agent serving as a dispersant.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 26, 1985
    Assignee: Aderans Company, Ltd.
    Inventor: Nobuo Watabe