US2681267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of improving the catalytic properties of aluminum fluoride and product thereof
Assignee: Honeywell International Inc
•
Filing: 1951-08-03
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Granted: 1954-06-15
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Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 John D Calfee
- 👤 Charles B Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:23
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE PROCESS OF IMPROVEMENT THE CATALYTIC PROPERTIES OF ALUMINUM FLUORIDE WHICH COMPRISES CONTACTING SAID ALUMINUM FLUORIDE, HAVING CRYSTALLITE SIZE NOT SUBSTANTIALLY GREATER THAN ABOUT 500 ANGSTROM UNITS, RADIUS, AT TEMPERATURE IN THE RANGE OF 400-600* C. WITH FREE OXYGEN-CONTAINING GAS FOR A TIME PERIOD IN THE RANGE OF 0.5-8.5 HOURS.
Claim 2
Dependent Claim
50 words
THE PROCESS OF IMPROVEMENT THE CATALYTIC PROPERTIES OF ALUMINUM FLUORIDE WHICH COMPRISES CONTACTING SAID ALUMINUM FLUORIDE, HAVING CRYSTALLITE SIZE NOT SUBSTANTIALLY GREATER THAN ABOUT 500 ANGSTROM UNITS, RADIUS, AT TEMPERATURE IN THE RANGE OF 400-600* C. WITH FREE OXYGEN-CONTAINING GAS FOR A TIME PERIOD IN THE RANGE OF 0.5-8.5 HOURS.
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) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |