Issued Patents 2019
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10494901 | Ball-dropping sliding sleeve with a removable ball seat | Shengpeng Zhang, Fei Gao, Feiyue Wang, Xin Zhang, Fuqiang Li | 2019-12-03 |
| 10387586 | Method for early warning analysis of eutrophication of designed artificial water body | Feng Li, Lu Yu, Yan Du, Nian Ding | 2019-08-20 |
| 10341710 | Program recording method and device, and set top box | Ronghui Li | 2019-07-02 |
| 10315274 | Laser marking method and system and laser marked object | R. Kirk Price, Jason N. Farmer, Ethan A. McGrath | 2019-06-11 |
| 10245773 | Method for molding two-piece blow molded hollow tank by using auxiliary male molds | Yan Sun, Lin Jiang, Songjun Xu, Liang Liu, Dejun Gao +6 more | 2019-04-02 |
| 10196863 | Connection structure between pipe body and steel joint of aluminum alloy drill pipe | Yonggang Liu, Chun FENG, Fangpo Li | 2019-02-05 |
| D839898 | Display screen or portion thereof with graphical user interface | Heli Zhong, Shunnian Li | 2019-02-05 |