Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5154903 | Treatment of asbestos and silicates to reduce their toxicity | Sigmund A. Weitzman | 1992-10-13 |
| 4474742 | Treatment of asbestos | Sigmund A. Weitzman | 1984-10-02 |
PG
Philip J. Graceffa
Boston Biomedical Research Institute: 2 patents #6 of 18Top 35%
Massachusetts General Hospital: 1 patents #42 of 166Top 30%
Overall (All Time): #2,312,199 of 4,157,543Top 60%
2
Patents All Time