Ammann; Paul R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ammann; Paul R..The latest application filed is for "direct electrochemical recovery of copper from dilute acidic solutions".
- Ammann; Paul R. - Boxford MA
- Ammann; Paul R. - Reading MA
| Patent | Date |
|---|---|
| Direct electrochemical recovery of copper from dilute acidic solutions Grant 4,026,772 - Ammann , et al. May 31, 1 | 1977-05-31 |
| Process For Recovering Non-ferrous Metal Values From Reverberatory Furnace Slags Grant 3,857,699 - Ammann , et al. December 31, 1 | 1974-12-31 |
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