US2520703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposal of waste cyanide
Assignee: —
•
Filing: —
•
Granted: 1950-08-29
•
Expires: 1967-08-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:01
CPC Classifications
C; C25; C25C; C25C1/00; C25C1/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
THE PROCESS OF TREATING WASTE CYANIDE MATERIAL WHICH INCLUDES PASSING AN ELECTRIC CURRENT FROM AN INSOLUBLE ANODE TO A CATHODE THROUGH AN AQUEOUS SOLUTION OF THE WASTE CYANIDE MATERIAL AT A TEMPERATURE OF ABOUT 200*F. UNTIL THE SOLUTION IS SUBSTANTIALLY NON-TOXIC.
References Cited (Backward Citations)
US756211A
Cited
US1531863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |