Patents by Inventor George Tezuka

George Tezuka 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).

  • Low-depth water bottom observing system
    Patent number: 6293733
    Abstract: A low-depth water bottom observing system in which at least one guide person monitors divers underwater includes a diving base boat equipped with a deck; an air supply system equipped with a plurality of air supply shut-off valves; a plurality of diving helmets; a plurality of air tubes which connect the diving helmets to the air supply shut-off valves; an air supply source which is connected to the air supply system; a step portion equipped with a non-slip platform, the step portion being pivotally mounted to the gunwale of the diving base boat to enable the step portion to be rotated between a first position in which the step portion is stored on the deck of the diving base boat, and a second position in which the step portion is positioned slightly above the surface of the water; a diving region frame arranged on the water bottom, the diving region frame including a peripheral arrangement of pipe anchors to hold the diving region frame to the water bottom, and at least one guide rope provided around upper
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: September 25, 2001
    Inventor: George Tezuka
  • Adapter pad for diving helmet
    Patent number: D446358
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: August 7, 2001
    Inventor: George Tezuka
  • Diving helmet
    Patent number: D402416
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: December 8, 1998
    Inventors: Akira Konno, George Tezuka
  • Diving helmet
    Patent number: D433542
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: November 7, 2000
    Assignee: Well Co., Ltd.
    Inventors: Kaori Iwafune, George Tezuka