US2921897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire suppressants
Assignee: Graviner Manufacturing Co Ltd
•
Filing: 1956-07-23
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Granted: 1960-01-19
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Expires: 1976-07-23
Abstract
No abstract record available.
Inventors
- 👤 William G Glendinning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:04
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN EXPLOSION SUPPRESSANT CONSISTING OF A MIXTURE OF TWO LIQUIDS, THE FIRST LIQUID BEING A BROMINE DERIVATIVE OF HYDROCARBON WHICH REPRESENTS BETWEEN 5% AND 95% BY VOLUME OF THE MIXTURE, THE BALANCE OF THE MIXTURE BEING PENTANE, SAID BROMINE DERIVATIVE OF HYDROCARBON HAVING A BOILING POINT AT NORMAL ATMOSPHERIC PRESSURE WHICH LIES WITHIN THE RANGE OF 20*C. TO 80*C.
Claim 2
Dependent Claim
59 words
AN EXPLOSION SUPPRESSANT CONSISTING OF A MIXTURE OF TWO LIQUIDS, THE FIRST LIQUID BEING A BROMINE DERIVATIVE OF HYDROCARBON WHICH REPRESENTS BETWEEN 5% AND 95% BY VOLUME OF THE MIXTURE, THE BALANCE OF THE MIXTURE BEING PENTANE, SAID BROMINE DERIVATIVE OF HYDROCARBON HAVING A BOILING POINT AT NORMAL ATMOSPHERIC PRESSURE WHICH LIES WITHIN THE RANGE OF 20*C. TO 80*C.
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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |