Patents by Inventor Gilbert Marangwanda

Gilbert Marangwanda 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).

  • Publication number: 20150355645
    Abstract: A pressure build-up valve is disclosed which has heightened sensitivity and reduced overall valve size and is adapted to minimize pressure fall-off and to be mounted to a pressurized vessel storing a gas or a liquid. The value is particularly, although not exclusively, designed to build and maintain pressure in cryogenic transportation trailer and storage tanks and is primarily for use with a closed loop liquefied natural gas fluid control system.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 10, 2015
    Inventors: Gilbert Marangwanda, Daniel Williams, James Kevin Fretwell