Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D948285 | Water bottle | Ziqi Wu, Zane Hoekstra, Timothy P Bower, Shih-Yi Chang | 2022-04-12 |
| 11235999 | Water treatment system | Ziqi Wu, Karlis Vecziedins, Shih-Yi Chang, Terry L. Lautzenheiser, Daniel L. Schlenk +1 more | 2022-02-01 |
| 11173433 | Service life reminding system for water bottle filter element | Weifu Guo, Shiyi Zhang | 2021-11-16 |
| D885544 | Air purifier for vehicle | — | 2020-05-26 |