Patents by Inventor Pius Chao

Pius Chao 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).

  • Water deflector for water-gas plumes from underwater explosions
    Patent number: 5841056
    Abstract: An explosive blast shield has two connected parts, a foraminous inner shield surrounded by an impervious outer shield. The inner shield has an open lower end to absorb an explosive blast of water and gas, as from an underwater explosion. The inner shield, whose area is about 20% holes, blocks most liquid from entering the space between the two shields, but gas passes readily through the holes to equalize the pressure across the inner shield. The shield may include a chimney at the upper end for release of gas and a hold-down to prevent the shield from being blown upward.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: November 24, 1998
    Assignee: Hydrodyne Incorporated
    Inventors: John B. Long, Pius Chao, Donald Waits