Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7141098 | Air filtration system using point ionization sources | Zhiqun Zhang | 2006-11-28 |
| 6758884 | Air filtration system using point ionization sources | Zhiqun Zhang | 2004-07-06 |
| D492019 | Air cleaner | Zhiqun Zhang | 2004-06-22 |
| D491655 | Air cleaner | Zhiqun Zhang | 2004-06-15 |
| D484228 | Air cleaner | Zhiqun Zhang | 2003-12-23 |
| 6533839 | Visual differentiation of adsorbent-loaded media | Jason D. Janisch | 2003-03-18 |
| 5087494 | Electrically conductive adhesive tape | Clyde D. Calhoun, James G. Berg, David C. Koskenmaki | 1992-02-11 |
| 4726651 | Optical fibers having piezoelectric coatings | Ta-Sheng Wei, William George French | 1988-02-23 |