Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7861353 | Glove/mitten eraser | Duane H. Lewis, Aysia R. Lewis | 2011-01-04 |
| 7025909 | Method for producing sphere-based crystals | Guoyi Fu | 2006-04-11 |
| 6863847 | Method for producing sphere-based crystals | Guoyi Fu | 2005-03-08 |
| 6756115 | 3D structural siliceous color pigments | Guoyi Fu | 2004-06-29 |
| 4943626 | Primary polyether active hydrogen compounds which are prepared from linked, protectively initiated polyalkyleneoxides | James E. McGrath, Youngtai Yoo, Robert B. Turner | 1990-07-24 |