Patents by Inventor Rene Weltevrede

Rene Weltevrede 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).

  • Startup openings in a three-phase gaslift loop reactor
    Patent number: 5256380
    Abstract: Reduction of the hysteresis effects in a gaslift loop reactor is effected with a draft tube for solids suspension. The gas or liquid flow rates for generating complete solid suspension are significantly higher than the flow rates necessary for maintaining that state. These hysteresis effects may be significantly reduced and a substantial reduction is obtained for the energy necessary to obtain the state of suspension. Preferably a draft tube which comprises openings through which an extra circulation takes place especially during the startup phase is used.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: October 26, 1993
    Assignee: Paques B.V.
    Inventors: Arnold Mulder, Rene Weltevrede