US3051652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellant composition
Assignee: Specialties Development Corp
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Filing: 1961-02-17
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Granted: 1962-08-28
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Expires: 1981-02-17
Abstract
No abstract record available.
Inventors
- 👤 John W Olandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:49
CPC Classifications
A; A62; A62C; A62C13/00; A62C13/006; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
A PROPELLANT FOR EXPELLING DRY FREE FLOWING POWDER FROM A CONTAINER, SAID PROPELLANT CONSISTING ESSENTIALLY OF GASEOUS MIXTURE OF BETWEEN ABOUT 35 AND ABOUT 40 PARTS BY WEIGHT OF BROMOTRIFFUOROMETANE, BETWEEN ABOUT 65 AND ABOUT 60 PARTS BY WEIGHT OF SULPHUR HEXAFLUORIDE, AND A SUFFICIENT AMOUTN OF AN INERT, NON-FLAMMABLE COMPRESSED GAS TO PRESSURIZE THE MIXTUE TO BETWEEN ABOUT 160 AND ABOUT 300 P.S.I.G. AT 70*F.
References Cited (Backward Citations)
US2668419A
Cited
US2912379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |