Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10075389 | Tiered priority system and callout performance booster | Jack Chiu-Chiu Yuan, Elvis B. Halcrombe, Jeffrey L. Maddix | 2018-09-11 |
| 10033661 | Tiered priority system and callout performance booster | Jack Chiu-Chiu Yuan, Elvis B. Halcrombe, Jeffrey L. Maddix | 2018-07-24 |
| 9982787 | Gate valve with secure sealing mechanism | Shu Huang | 2018-05-29 |
| 9470319 | Gate valve with linkage structure | — | 2016-10-18 |
| 9464721 | Gate valve with secure sealing mechanism | Shu Huang | 2016-10-11 |