Patents by Inventor Zenichi Yasuda

Zenichi Yasuda 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).

  • Measuring device for measuring the amount of change in thickness of the paint layer
    Patent number: 4443106
    Abstract: A measuring device for measuring the change in time-dependent thickness of the paint layer without any need of direct contact thereto. The device is provided with an optical arrangement which is well-known as Michelson-interferometer in principle, and is effective to obtain sharp and clear interference fringes even though the paint layer has a low reflectivity. It is also possible at laboratory side to observe the change of the paint layer under the circumstances to which the paint layer may be exposed actually.
    Type: Grant
    Filed: December 1, 1981
    Date of Patent: April 17, 1984
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Zenichi Yasuda, Misao Morita, Takashi Nakajima