Patent US2531372A successfully refreshed from Google Patents.
US2531372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trifluorobromomethane
Assignee: 3M Co
•
Filing: 1945-12-08
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Granted: 1950-11-21
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Expires: 1965-12-08
Abstract
No abstract record available.
Inventors
- 👤 Waterman Beatrice Joy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:51
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C19/14; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
THE COMPOUND, TRIFLUOROBROMOMETHANE, HAVING THE FORMULA, CF3BR.
Claim 2
Dependent Claim
7 words
THE COMPOUND, TRIFLUOROBROMOMETHANE, HAVING THE FORMULA, CF3BR.
Claim 3
Independent Claim
39 words
THE METHOD OF PREPARING TRIFLUOROBROMOMETHANE COMPRISING HEATING A MIXTURE OF CARBON TETRABROMIDE, ANTIMONY TRIFLUORIDE AND BROMINE TO A TEMPERATURE OF 180*-220*C. UNDER A PRESSURE OF 60-80 POUNDS GAUGE FOR A PERIOD SUFFICIENT TO FORM TRIFLUOROBROMOMETHANE AND RECOVERING THE TRIFLUOROBROMOMETHANE.
Claim 4
Independent Claim
39 words
THE METHOD OF PREPARING TRIFLUOROBROMOMETHANE COMPRISING HEATING A MIXTURE OF CARBON TETRABROMIDE, ANTIMONY TRIFLUORIDE AND BROMINE TO A TEMPERATURE OF 180*-220*C. UNDER A PRESSURE OF 60-80 POUNDS GAUGE FOR A PERIOD SUFFICIENT TO FORM TRIFLUOROBROMOMETHANE AND RECOVERING THE TRIFLUOROBROMOMETHANE.
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) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |