Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5580422 | Brightening color dyed wastepaper with a bleaching agent and a quaternary compound | Paul W. Shepperd, III | 1996-12-03 |
| 5560805 | Enhanced decolorization of waste paper with selected amines | Paul W. Shepperd, III | 1996-10-01 |