US2500792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of potassium
Assignee: —
•
Filing: —
•
Granted: 1950-03-14
•
Expires: 1967-03-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:50
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROCESS FOR THE PRODUCTION OF POTASSIUM FLUOZIRCONATES HAVING KF:ZRF4 MOLECULAR RATIOS BETWEEN 1 AND 2.5 THE STEP WHICH COMPRISES REACTING TOGETHER POTASSIUM CHLORIDE AND AN AQUEOUS HYDROFLUORIC ACID SOLUTION OF ZIRCONIUM FLUORIDE CONTAINING AT LEAST 1 MOLE OF HF PER 1 MOLE OF ZRF4, IN PROPORTIONS RANGING FROM 1 TO 3 MOLES OF KCL PER 1 MOLE OF ZRF4.
Claim 2
Dependent Claim
61 words
IN A PROCESS FOR THE PRODUCTION OF POTASSIUM FLUOZIRCONATES HAVING KF:ZRF4 MOLECULAR RATIOS BETWEEN 1 AND 2.5 THE STEP WHICH COMPRISES REACTING TOGETHER POTASSIUM CHLORIDE AND AN AQUEOUS HYDROFLUORIC ACID SOLUTION OF ZIRCONIUM FLUORIDE CONTAINING AT LEAST 1 MOLE OF HF PER 1 MOLE OF ZRF4, IN PROPORTIONS RANGING FROM 1 TO 3 MOLES OF KCL PER 1 MOLE OF ZRF4.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |