Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8409421 | Process for producing metallic lead starting from desulfurized pastel | Massimo Maccagni, Silvano Cossali | 2013-04-02 |
| 7604785 | Process for the recovery of elemental sulphur from residues produced in hydrometallurgical processes | Massimo Maccagni, Silvano Cossali | 2009-10-20 |
| 7498012 | Desulfurization process of pastel and grids of lead accumulators | Massimo Maccagni, Silvano Cossali | 2009-03-03 |
| 5879830 | Process for regenerating sodium sulphide from the sodium sulphate which forms in treating lead paste from exhausted batteries | Massimo Maccagni, Silvano Cossali | 1999-03-09 |
| 5750019 | Process for hydrometallurgic and electrochemical treatment of sulfur antimony ores with production of electrolytic antimony and elemental sulfur | — | 1998-05-12 |
| 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 |
| 5441609 | Process for continuous electrochemical lead refining | — | 1995-08-15 |
| 5277777 | Insoluble anode for electrolyses in aqueous solutions | Pierluigi Fracchia | 1994-01-11 |
| 5106466 | Process for the integral recovery of the sulphur contained in spent lead batteries, obtained in the form of pure sulphuric acid for reuse in the production of new batteries | Pierluigi Fracchia | 1992-04-21 |
| 5039337 | Process for producing electrolytic lead and elemental sulfur from galena | Pierluigi Fracchia | 1991-08-13 |
| 5030520 | Electrical conductor, in particular suitable for use as an insoluble anode in electrowinning processes, and in electrochemical processes in general, and process for producing it | Pierluigi Fracchia, Fulvio Redivo | 1991-07-09 |
| 5013356 | Process for the processing of slag from aluminium scrap and waste melting, recovery of components thereof and treatment of gasses generated | Tullio Corsini, Pierluigi Fracchia | 1991-05-07 |
| 4927510 | Hydrometallurgical process for recovering in pure metal form all the lead contained in the active mass of exhausted batteries | Pierluigi Fracchia | 1990-05-22 |
| 4769116 | Hydrometallurgical process for an overall recovery of the components of exhausted lead-acid batteries | Pierluigi Fracchia | 1988-09-06 |