Patent US2916775A successfully refreshed from Google Patents.
US2916775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellent powder
Assignee: Olin Corp
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Filing: 1951-04-11
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Granted: 1959-12-15
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Expires: 1971-04-11
Abstract
No abstract record available.
Inventors
- 👤 Jr John J O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:09
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0066; C06B21/0008; C06B21/0025; C06B21/0058
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN THE ART OF MAKING POWDER GRANIS BY A MOLDING PROCESS, THE METHOD WHICH COMPRISES PREPARING A SUBSTANTIALLY UNIFORM POURABLE PASTE BY MIXING TOGETHER PARTICLES OF GELATINIZED NITROCELLULOSE PROPELLENT AND A LIQUID PLASTICIZER FOR THE NITROCELLULOSE IN THE AMOUNT OF AT LEAST ABOUT 25% BY VOLUME OF THE RESULTING MIXTURE AND AT A TEMPERATURE AT WHICH SUBSTANTIALLY NO DISSOLUTION OF THE NITROCELLULOSE PARTICLES IN THE PLASTICIZERS TAKES PLACE AND THEREAFTER MAINTAINING SAID COMPOSITION AT ATMOSPHERIC PRESSURE, AND AT A TEMPERATURE AT WHICH THE NITROCELLULOSE WILL DISSOLVE, UNTIL THE NITROCELLULOSE IS COMPLETELY DISSOLVED AND THE RESULTING SUBSTANTIALLY HOMOGENEOUS MASS HAS SOLIDIFIED INTO A POWDER GRAIN.
Claim 2
Dependent Claim
104 words
IN THE ART OF MAKING POWDER GRANIS BY A MOLDING PROCESS, THE METHOD WHICH COMPRISES PREPARING A SUBSTANTIALLY UNIFORM POURABLE PASTE BY MIXING TOGETHER PARTICLES OF GELATINIZED NITROCELLULOSE PROPELLENT AND A LIQUID PLASTICIZER FOR THE NITROCELLULOSE IN THE AMOUNT OF AT LEAST ABOUT 25% BY VOLUME OF THE RESULTING MIXTURE AND AT A TEMPERATURE AT WHICH SUBSTANTIALLY NO DISSOLUTION OF THE NITROCELLULOSE PARTICLES IN THE PLASTICIZERS TAKES PLACE AND THEREAFTER MAINTAINING SAID COMPOSITION AT ATMOSPHERIC PRESSURE, AND AT A TEMPERATURE AT WHICH THE NITROCELLULOSE WILL DISSOLVE, UNTIL THE NITROCELLULOSE IS COMPLETELY DISSOLVED AND THE RESULTING SUBSTANTIALLY HOMOGENEOUS MASS HAS SOLIDIFIED INTO A POWDER GRAIN.
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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |