Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4461496 | Soap having improved carbonless imaging properties | — | 1984-07-24 |
| 4201404 | Pressure-sensitive marking materials | Jack W. Charbonneau, Richard S. Law, Wayne O. Otteson | 1980-05-06 |
WL
Willis J. Ludwig
Overall (All Time): #2,358,967 of 4,157,543Top 60%
2
Patents All Time