Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352549 | Lead oxide composition for use in lead-acid batteries | Purushothama Rao | 1994-10-04 |
| 4713304 | Method of preparing lead-acid battery plates and lead-acid batteries containing plates so prepared | Purushothama Rao | 1987-12-15 |
| 4329408 | Lead oxide composition for use in lead-acid batteries | George W. Mao, Purushothama Rao, Francis M. Dunlevey | 1982-05-11 |