US3021209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of metals
Assignee: Universal Oil Products Co
•
Filing: 1959-12-08
•
Granted: 1962-02-13
•
Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Murray
- 👤 Edward J Bicek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:58
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/02; C22B11/021; C22B11/026; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A METHOD OF REMOVING A NOBLE METAL FROM A COMPOSITE CONTAINING SAID NOBLE METAL WHICH COMPRISES TRATING SAID COMPOSITE WITH AN OXIDE OF NITROGEN AND A VOLATILIZABLE INORGANIC CHLORINE-CONTANING COMPOUND AT A TEMPERATURE SUFFICIENT TO CONVERT THE NOBLE METAL TO A VOLATILE FORM.
Claim 2
Independent Claim
43 words
A METHOD OF REMOVING A NOBLE METAL FROM A COMPOSITE CONTAINING SAID NOBLE METAL WHICH COMPRISES TRATING SAID COMPOSITE WITH AN OXIDE OF NITROGEN AND A VOLATILIZABLE INORGANIC CHLORINE-CONTANING COMPOUND AT A TEMPERATURE SUFFICIENT TO CONVERT THE NOBLE METAL TO A VOLATILE FORM.
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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |