Patents by Inventor Rene Hendrick Elias Van Doorn

Rene Hendrick Elias Van Doorn 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).

  • Mixed conducting membranes for syngas production
    Patent number: 6492290
    Abstract: This invention presents a new class of multicomponent metallic oxides which are particularly suited toward use in fabricating components used in processes for producing syngas. The non-stoichiometric, A-site rich compositions of the present invention are represented by the formula (LnxCa1−x)y FeO3−&dgr;wherein Ln is La or a mixture of lanthanides comprising La, and wherein 1.0>x>0.5, 1.1≧y>1.0 and &dgr; is a number which renders the composition of matter charge neutral. Solid-state membranes formed from these compositions provide a favorable balance of oxygen permeance and resistance to degradation when employed in processes for producing syngas. This invention also presents a process for making syngas which utilizes such membranes.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: December 10, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Paul Nigel Dyer, Michael Francis Carolan, Darryl Butt, Rene Hendrick Elias Van Doorn, Raymond Ashton Cutler