Issued Patents 2019
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10480661 | Leak rate reducing sealing device | Doseo Park | 2019-11-19 |
| 10472926 | Pressurized seat check valve | Do Seo Park, Marc Samuelson, Gregory A. Armstrong, Donavan Brown | 2019-11-12 |
| 10458194 | Mandrel supported flexible support ring assembly | Lei Zhao, Zhiyue Xu | 2019-10-29 |
| 10260310 | High temperature and pressure packer | Lei Zhao, Zhiyue Xu | 2019-04-16 |
| 10233726 | Pressure differential device with constant pressure drop | Madhawa Ratnayake, Kun-I Yuan, Carlos P. Izaguirre, David Teale, Darrin L. Willauer | 2019-03-19 |