Patents by Inventor Ryoji Watatani

Ryoji Watatani 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).

  • Bundle of hairs and manufacturing method for the same
    Publication number: 20030182750
    Abstract: A bundle of hairs, having a hair portion which is composed of plural hairs of synthetic fiber and a base for connecting base ends of the plural hairs of the synthetic fiber, used for painting, writing, drawing, etc., with liquid impregnated into the bundle of hairs. A rate of synthetic fiber non-existent area to an area defined by dimensions of a base portion of the hair portion is set to correspond to purposes of the bundle.
    Type: Application
    Filed: March 6, 2003
    Publication date: October 2, 2003
    Applicant: Kuretake Co., Ltd.
    Inventors: Yoshitsugu Nishida, Hidemi Hukuda, Ryoji Watatani