US2525790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidizing process for zinc recovery
Assignee: American Metal Co Ltd
•
Filing: 1948-02-12
•
Granted: 1950-10-17
•
Expires: 1968-02-12
Abstract
No abstract record available.
Inventors
- 👤 Paul W Garbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:02
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/10; C22B19/00; C22B19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN THE PROCESS OF PRODUCING ZINC BY THE REDUCTION OF A COMMINUTED ZINC COMPOUND UNDER FLUIDIZING CONDITIONS, THE IMPROVEMENT WHICH COMPRISES INTRODUCING A FLUID HYDROCARBON STREAM INTO THE FLUIDIZED MASS UNDERGOING REDUCTION IN THE VICINITY OF THE UPPER END OF SAID FLUIDIZED MASS TO EFFECT SUBSTANTIAL DIMINUTION IN THE CONTENT OF OXIDIZING COMPONENTS IN THE REACTION GASES LEAVING SAID FLUIDIZED MASS, SAID FLUID HYDROCARBON STREAM BEING ADDITIONAL TO MATERIAL SUPPLIED TO SAID FLUIIZED MASS AS REDUCING AGENT FOR THE REDUCTION OF SAID ZINC COMPOUND, SEPARATING SAID REACTION GASES FROM SAID FLUIDIZED MASS, AND CONDENSING THE ZINC VAPOR IN THE SEPARATED REACTION GASES.
Claim 2
Dependent Claim
102 words
IN THE PROCESS OF PRODUCING ZINC BY THE REDUCTION OF A COMMINUTED ZINC COMPOUND UNDER FLUIDIZING CONDITIONS, THE IMPROVEMENT WHICH COMPRISES INTRODUCING A FLUID HYDROCARBON STREAM INTO THE FLUIDIZED MASS UNDERGOING REDUCTION IN THE VICINITY OF THE UPPER END OF SAID FLUIDIZED MASS TO EFFECT SUBSTANTIAL DIMINUTION IN THE CONTENT OF OXIDIZING COMPONENTS IN THE REACTION GASES LEAVING SAID FLUIDIZED MASS, SAID FLUID HYDROCARBON STREAM BEING ADDITIONAL TO MATERIAL SUPPLIED TO SAID FLUIIZED MASS AS REDUCING AGENT FOR THE REDUCTION OF SAID ZINC COMPOUND, SEPARATING SAID REACTION GASES FROM SAID FLUIDIZED MASS, AND CONDENSING THE ZINC VAPOR IN THE SEPARATED REACTION GASES.
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) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |