Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672181 | Method for manufacturing a hardened lead storage battery electrode | Hans Warlimont, Armin Ueberschaer, Klaus Drefahl | 1997-09-30 |
| 5618507 | Process for removing SO.sub.2 from gases which contain it, with direct production of elemental sulfur | Massimo Maccagni | 1997-04-08 |