Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10926219 | Gas filters for basic contaminants | James Langer, Erich Diesel, Chaoyi Ba, James Economy, Bita Vaezian +1 more | 2021-02-23 |
| 10639588 | Gas filters for acidic contaminants | Chaoyi Ba, Erich Diesel, James Langer, James Economy, Bita Vaezian +1 more | 2020-05-05 |
| 7151935 | Method for initiative setting up calls by service control point in mobile intelligent network | Yongping Shang, Jianjun Zhang | 2006-12-19 |
| 6912383 | Implementing method for adding monetary value of mobile prepayment service in different locations | Mofang Li, Yongping Shang | 2005-06-28 |