Patents by Inventor DAVID LAWLIS

DAVID LAWLIS 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).

  • Internal floating roof transfer tank system
    Patent number: 10961047
    Abstract: The invention relates to an improved transfer tank having a improved internal floating roof with special vapor sealing features, and wherein the tank ranges in storage size from 750 to 5000 barrels.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: March 30, 2021
    Inventor: David Lawlis
  • INTERNAL FLOATING ROOF TRANSFER TANK SYSTEM
    Publication number: 20180086550
    Abstract: The invention relates to an improved transfer tank having a improved internal floating roof with special vapor sealing features, and wherein the tank ranges in storage size from 750 to 5000 barrels.
    Type: Application
    Filed: September 28, 2016
    Publication date: March 29, 2018
    Inventor: DAVID LAWLIS