Patents by Inventor Weijie Zheng

Weijie Zheng 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).

  • Catalysts for NOx reduction and sulfur resistance
    Publication number: 20220314166
    Abstract: The present invention belongs to the technical field of functional organic macromolecule composite catalysts and involves the preparation of a nitrogen-doped lattice macromolecule composite loaded with an efficient denitrification and sulfur resistance catalyst, firstly using the method of adding metal salts to make a large amount of Ce3+, Ce4+, Sn3+ and Sn4+ ions accumulate around the cyanuric acid molecule. Afterwards, 2,4,6-triaminopyrimidine and cytosine were added to graft with the cyanuric acid to produce the N-doped macromolecule in the first stage. After that, potassium permanganate was used as the oxidizing agent, and redox reaction occurred on the surface of N-doped macromolecules, so that the manganese cerium tin catalyst was grown in situ on the surface of N-doped macromolecules, and finally calcined at once to cross-link the N-doped macromolecules to generate catalyst composites. The catalysts described in this invention have higher efficient NOx reduction and sulfur resistance performance.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 6, 2022
    Applicant: FU ZHOU UNIVERSITY
    Inventors: Yuying ZHENG, Weijie ZHENG
  • Method and apparatus for controlling the output of a gas discharge laser system
    Patent number: 7277464
    Abstract: The present invention relates to a fluorine gas discharge laser system and control of replenishment of fluorine gas as the gas discharge laser operates and consumes fluorine.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: October 2, 2007
    Assignee: Cymer, Inc.
    Inventors: John A. Rule, Paolo Zambon, Tom A. Watson, Omez S. Mesina, Weijie Zheng
  • Method and apparatus for controlling the output of a gas discharge laser system
    Publication number: 20050185690
    Abstract: The present invention relates to a fluorine gas discharge laser system and control of replenishment of fluorine gas as the gas discharge laser operates and consumes fluorine.
    Type: Application
    Filed: January 13, 2005
    Publication date: August 25, 2005
    Inventors: John Rule, Paolo Zambon, Tom Watson, Omez Mesina, Weijie Zheng