Patents by Inventor Yuewu Chen

Yuewu 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).

  • Accelerated hydrolysis system
    Patent number: 11235332
    Abstract: A novel in vitro system and method for predicting the in vivo behavior, such as absorption time or mechanical strength retention, of biodegradable polymeric implants and medical devices. Data from this in vitro method are correlated to in vivo absorption data, allowing for the prediction of accurate in vivo behaviors, such as absorption times. The system uses a novel bypass loop to maintain the integrity of pH measuring devices to improve the reproducibility of data collected during in vitro testing.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: February 1, 2022
    Assignee: Ethicon, Inc.
    Inventors: Yuxin Han, Yuewu Chen, Dechun Wu
  • Accelerated Hydrolysis System
    Publication number: 20190381508
    Abstract: A novel in vitro system and method for predicting the in vivo behavior, such as absorption time or mechanical strength retention, of biodegradable polymeric implants and medical devices. Data from this in vitro method are correlated to in vivo absorption data, allowing for the prediction of accurate in vivo behaviors, such as absorption times. The system uses a novel bypass loop to maintain the integrity of pH measuring devices to improve the reproducibility of data collected during in vitro testing.
    Type: Application
    Filed: June 14, 2018
    Publication date: December 19, 2019
    Inventors: Yuxin Han, Yuewu Chen, Dechun Wu
  • Pyridine carboxamide or sulfonamide derivatives and combinatorial libraries thereof
    Patent number: 6677452
    Abstract: The present invention relates to novel pyridine carboxamide or sulfonamide derivative compounds of the following formula: wherein R1 to R6 have the meanings provided herein. The invention further relates to combinatorial libraries containing two or more such compounds, as well as methods of preparing pyridine carboxamide or sulfonamide derivative compounds.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: January 13, 2004
    Assignee: Lion Bioscience AG
    Inventors: Yuewu Chen, Hengyuan Lang, Yazhong Pei
  • 2-aminobenzoxazole derivatives and combinatorial libraries thereof
    Patent number: 6660858
    Abstract: The present invention relates to novel 2-aminobenzoxazole derivative compounds of the following formula: wherein R1 to R4 and Z have the meanings provided herein. The invention further relates to combinatorial libraries containing two or more such compounds, as well as methods of preparing 2-aminobenzoxazole derivative compounds.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: December 9, 2003
    Assignee: Lion Bioscience AG
    Inventors: Scott C. Sutton, Amy L. Hannah, Yuewu Chen, Shirong Zhu
  • 2-aminobenzoxazole derivatives and combinatorial libraries thereof
    Publication number: 20020161028
    Abstract: The present invention relates to novel 2-aminobenzoxazole derivative compounds of the following formula: 1
    Type: Application
    Filed: March 28, 2001
    Publication date: October 31, 2002
    Inventors: Scott C. Sutton, Amy L. Hannah, Yuewu Chen, Shirong Zhu