Patents by Inventor Tatsumi Morikawa

Tatsumi Morikawa 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).

  • Fume hood
    Patent number: 4548128
    Abstract: A fume hood forming an experimental work space includes a sensor for detecting an air speed within the exhaust duct. The sensor is provided in a by-pass section which is positioned on the exhaust duct and in communication with the ambient air.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: October 22, 1985
    Assignee: Yamato Scientific Co., Ltd.
    Inventors: Tatsumi Morikawa, Yoshio Osawa, Takao Kawakami, Naoki Yoshida