Inventor
John L. Cromwell
Inventor
Pincourt, CA
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C25Cprimary
C25CProcesses for the electrolytic production, recovery or refining of metals67%
C22BProduction and refining of metals17%
C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals17%
PatentTitleYear
5,620,586'Silver electrolysis method in Moebius cells'19975,378,328'Process for the electrochemical recovery of bismuth from an ion exchange eluent'19955,100,528'Continuous silver refining cell'19923,951,773'Fluidized bed electrode system utilizing embedded insulator auxiliary electrode'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to NORANDA MINES LTD (1)· patent assignee history
1976–1997Based in Pincourt, CA· patent location history
1992–1997Patents assigned to NORANDA INC (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NORANDA INC | 3 | 1992–1997 |
| NORANDA MINES LTD | 1 | 1976 |
Locations
| Location | Patents | Span |
|---|---|---|
| Pincourt, CA | 4 | 1976–1997 |