Patents by Inventor Stephen E. Bold

Stephen E. Bold 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).

  • Storage tank
    Patent number: 4254887
    Abstract: Liquid storage tank containing a collapsible bag of flexible impervious sheet material supported by a collar within the tank which floats on the stored liquid and moves with the liquid thereby dividing the interior of the shell into an air and a liquid space. The bag has an external skirt of a similar flexible sheet material attached to the supporting collar which lies between the bag and adjacent tank side walls to reduce abrasion and catching of the bag and tank walls particularly during tank emptying and filling procedures.
    Type: Grant
    Filed: March 6, 1979
    Date of Patent: March 10, 1981
    Assignee: The British Petroleum Company Limited
    Inventor: Stephen E. Bold