US3197276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of pure anhydrous alf3 from nh4al(so4)2*12h2o
Assignee: Alcatel Lucent SAS
•
Filing: 1963-07-09
•
Granted: 1965-07-27
•
Expires: 1983-07-09
Abstract
No abstract record available.
Inventors
- 👤 Forrat Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:46
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/48; C01F7/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR THE PREPARATION OF PUR ANHYDROUS ALUMINUM FLUORIDE FROM THE DOUBLE ALUMINUM AND AMMONIUM FLUORIDE COMPOUND, ALF3-6NH4F, WHICH COMPRISES REACTING AMMONIUM ALUMINUM SULFATE,
Claim 2
Dependent Claim
25 words
A PROCESS FOR THE PREPARATION OF PUR ANHYDROUS ALUMINUM FLUORIDE FROM THE DOUBLE ALUMINUM AND AMMONIUM FLUORIDE COMPOUND, ALF3-6NH4F, WHICH COMPRISES REACTING AMMONIUM ALUMINUM SULFATE,
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |