Patents by Inventor Hanqing Feng

Hanqing Feng 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).

  • Patent number: 11596708
    Abstract: A medical polymer device comprising a biodegradable polymer is provided, wherein the biodegradable polymer has a crystallinity of about 10% to about 80%, and preferably from about 20% to about 60%, wherein the medical polymer device comprises a small molecule organic compound which diffuses into the biodegradable polymer, the small molecule organic compound has a molecular weight of from about 100 to about 1000 Daltons, preferably from about 150 to about 500 Daltons, and more preferably from about 150 to about 250 Daltons, and the small molecule organic compound is non-evaporating or low-evaporating. The present invention also provides a method for preparing a medical polymer device according to the present invention as well as a method for modifying a medical polymer device made from a biodegradable polymer.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: March 7, 2023
    Assignee: Beijing Advanced Medical Technologies, Ltd. Inc.
    Inventors: Hugh Qinghong Zhao, Qing Liu, Hanqing Feng, Guixin Shi, Dengqiang Jia
  • Publication number: 20210170067
    Abstract: A medical polymer device comprising a biodegradable polymer is provided, wherein the biodegradable polymer has a crystallinity of about 10% to about 80%, and preferably from about 20% to about 60%, wherein the medical polymer device comprises a small molecule organic compound which diffuses into the biodegradable polymer, the small molecule organic compound has a molecular weight of from about 100 to about 1000 Daltons, preferably from about 150 to about 500 Daltons, and more preferably from about 150 to about 250 Daltons, and the small molecule organic compound is non-evaporating or low-evaporating. The present invention also provides a method for preparing a medical polymer device according to the present invention as well as a method for modifying a medical polymer device made from a biodegradable polymer.
    Type: Application
    Filed: February 3, 2021
    Publication date: June 10, 2021
    Inventors: Hugh Qinghong Zhao, Qing Liu, Hanqing Feng, Guixin Shi, Dengqiang Jia
  • Patent number: 11007298
    Abstract: A medical polymer device comprising a biodegradable polymer is provided, wherein the biodegradable polymer has a crystallinity of about 10% to about 80%, and preferably from about 20% to about 60%, wherein the medical polymer device comprises a small molecule organic compound which diffuses into the biodegradable polymer, the small molecule organic compound has a molecular weight of from about 100 to about 1000 Daltons, preferably from about 150 to about 500 Daltons, and more preferably from about 150 to about 250 Daltons, and the small molecule organic compound is non-evaporating or low-evaporating. The present invention also provides a method for preparing a medical polymer device according to the present invention as well as a method for modifying a medical polymer device made from a biodegradable polymer.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: May 18, 2021
    Assignee: Beijing Advanced Medical Technologies, Ltd. Inc.
    Inventors: Hugh Qinghong Zhao, Qing Liu, Hanqing Feng, Guixin Shi, Dengqiang Jia
  • Publication number: 20200306409
    Abstract: A medical polymer device comprising a biodegradable polymer is provided, wherein the biodegradable polymer has a crystallinity of about 10% to about 80%, and preferably from about 20% to about 60%, wherein the medical polymer device comprises a small molecule organic compound which diffuses into the biodegradable polymer, the small molecule organic compound has a molecular weight of from about 100 to about 1000 Daltons, preferably from about 150 to about 500 Daltons, and more preferably from about 150 to about 250 Daltons, and the small molecule organic compound is non-evaporating or low-evaporating. The present invention also provides a method for preparing a medical polymer device according to the present invention as well as a method for modifying a medical polymer device made from a biodegradable polymer.
    Type: Application
    Filed: May 4, 2016
    Publication date: October 1, 2020
    Inventors: Hugh Qinghong Zhao, Qing Liu, Hanqing Feng, Guixin Shi, Dengqiang Jia