Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11815155 | Zero-stiffness impact isolation device | Ming Li, Junjie Mei, Ji Ran, Hexiang Zheng, Feijie Qian | 2023-11-14 |
| 10983232 | Seismic rock physics inversion method based on large area tight reservoir | Jing Ba, Wenhui Tan, Wei Qian | 2021-04-20 |
| 5314257 | Printer cartridge assembly | — | 1994-05-24 |
| 5054943 | Ribbon inking apparatus and printer cartridge | — | 1991-10-08 |
| 4639153 | Printing ribbon spool having an ink reservoir and method of making same | — | 1987-01-27 |