US3194653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper recovery process
Assignee: Individual
•
Filing: 1963-05-06
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Granted: 1965-07-13
•
Expires: 1983-05-06
Abstract
No abstract record available.
Inventors
- 👤 Harmon E Keyes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:37
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0063; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD FOR PRODUCING METALLIC COPPER INCLUDING THE STEPS OF: PRODUCING IN ACID SOLUTION A COPPER SALT OF SUCH ACID; CONTACTING SUCH SOLUTION WITH A METAL ELECTRO-POSITIVE TO COPPER TO PRECIPITATE THE COPPER OF THE SOLUTION IN METALLIC FORM ON THE ELECTRO-POSITIVE METAL; AND SUPPLYING TO SAID SOLUTION UNDERGOING PRECIPITATION AN ACID-CORROSION INHIBITOR FOR SUCH ACID COMPRISING AN ORGANIC COMPOUND TO INHIBIT ATTACK OF THE ELECTROPOSITIVE METAL BY THE ACID AND YIELD GRANULAR COPPER PARTICLES READILY SEPARABLE FROM THE ELECTRO-POSITIVE METAL AND SOLUTION.
Claim 2
Independent Claim
83 words
A METHOD FOR PRODUCING METALLIC COPPER INCLUDING THE STEPS OF: PRODUCING IN ACID SOLUTION A COPPER SALT OF SUCH ACID; CONTACTING SUCH SOLUTION WITH A METAL ELECTRO-POSITIVE TO COPPER TO PRECIPITATE THE COPPER OF THE SOLUTION IN METALLIC FORM ON THE ELECTRO-POSITIVE METAL; AND SUPPLYING TO SAID SOLUTION UNDERGOING PRECIPITATION AN ACID-CORROSION INHIBITOR FOR SUCH ACID COMPRISING AN ORGANIC COMPOUND TO INHIBIT ATTACK OF THE ELECTROPOSITIVE METAL BY THE ACID AND YIELD GRANULAR COPPER PARTICLES READILY SEPARABLE FROM THE ELECTRO-POSITIVE METAL AND SOLUTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |