Patents by Inventor Weiqi Chen

Weiqi Chen 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: 20250129295
    Abstract: The present disclosure provides a pyrolysis process for converting an additive-containing plastic comprising a polyolefin polymer to an alkene, an alkane, or a mixture thereof. The process comprises contacting the plastic with a catalyst in a one-pot pyrolysis system at a temperature between about 350° C. and about 500° C.; wherein the catalyst comprises a solid acid selected from the group consisting of HY, HZSM-5, and Al-SBA-15. The present disclosure further provides a one-pot pyrolysis system and uses of a solid acid in the pyrolysis process for converting plastic comprising a polyolefin polymer to an alkene.
    Type: Application
    Filed: November 14, 2024
    Publication date: April 24, 2025
    Applicant: University of Delaware
    Inventors: Esun Selvam, Pavel Kots, Weiqi Chen, Dionisios G. Vlachos, Jacqueline Ngu, Sean Najmi, Brandon Vance
  • Publication number: 20220370448
    Abstract: A pharmaceutical composition comprising a small molecule EGFR inhibitor and a preparation method therefor, the composition comprising N-(5-((4-(1-cyclopropyl-1H-indol-3-yl)pyrimidin-2-yl)amino)-2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxyphenyl)acrylamide, an isomer, solvate, hydrate, or pharmaceutically acceptable salt thereof, or a combination thereof that acts as an active ingredient, and at least one pharmaceutically acceptable excipient.
    Type: Application
    Filed: July 28, 2022
    Publication date: November 24, 2022
    Inventors: Weiqi Chen, Junjun Zhao, Xiaolei Wang, Baoqing Yin, Xiao Chen
  • Publication number: 20210069190
    Abstract: A pharmaceutical composition comprising a small molecule EGFR inhibitor and a preparation method therefor, the composition comprising N-(5-((4-(1-cyclopropyl-TH-indol-3-yl)pyrimidin-2-yl)amino)-2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxyphenyl)acrylamide, an isomer, solvate, hydrate, or pharmaceutically acceptable salt thereof, or a combination thereof that acts as an active ingredient, and at least one pharmaceutically acceptable excipient.
    Type: Application
    Filed: May 13, 2019
    Publication date: March 11, 2021
    Inventors: Weiqi Chen, Junjun Zhao, Xiaolei Wang, Baoqing Yin, Xiao Chen
  • Patent number: 9580422
    Abstract: Novel compounds are provided which are 11-beta-hydroxysteroid dehydrogenase type I inhibitors. 11-beta-hydroxysteroid dehydrogenase type I inhibitors are useful in treating, preventing, or slowing the progression of diseases requiring 11-beta-hydroxysteroid dehydrogenase type I inhibitor therapy. These novel compounds of formula I: or stereoisomers or pharmaceutically acceptable salts thereof, wherein R* is an isotopically labeled hydroxypropyl moiety.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: February 28, 2017
    Assignee: Bristol-Myers Squibb Company
    Inventors: Yaofeng Cheng, Weiqi Chen, Brad D. Maxwell, Bach D. Tran, Jun Li
  • Publication number: 20160257680
    Abstract: Novel compounds are provided which are 11-beta-hydroxysteroid dehydrogenase type I inhibitors. 11-beta-hydroxysteroid dehydrogenase type I inhibitors are useful in treating, preventing, or slowing the progression of diseases requiring 11-beta-hydroxysteroid dehydrogenase type I inhibitor therapy. These novel compounds of formula I: or stereoisomers or pharmaceutically acceptable salts thereof, wherein R* is an isotopically labeled hydroxypropyl moiety.
    Type: Application
    Filed: October 21, 2014
    Publication date: September 8, 2016
    Inventors: Yaofeng Cheng, Weiqi Chen, Brad D. Maxwell, Bach D. Tran, Jun Li
  • Patent number: D994511
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: August 8, 2023
    Inventor: Weiqi Chen