Patent US5642731A successfully refreshed from Google Patents.
US3092525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing unitary nitrocellulose grains capable of fragmentation under primer blast to original granules
Assignee: Olin Corp
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Filing: 1960-09-30
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Granted: 1963-06-04
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Expires: 1980-09-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:23
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0058
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD FOR PREPARING A ONE-PIECE PROPELLENT POWDER CHARGE WHICH BURNS AS A GRANULAR NITROCELLULOSE PROPELLENT WHICH COMPRISES ADMIXING NITROCELLULOSE POWDER GRAINS WITH A NON-VOLATILE LIQUID PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF NITROGLYCERING BUTANE TRIOL TRINITRATE, DIGLYCOL DINITRATE, ETHYLENE GLYCOL DINITRATE, DIBUTYL PHTHALATE, DIMETHYL SEBACATE, DIBUTYL SUCCINATE, DIBUTYL ADIPATE, TRIACETIN, ETHYL DIPHENYL PHOSPHATE, AND TRIBUTYL PHOSPHATE, UNTIL SAID NITROCELLULOSE POWDER GRAINS CONTAIN BETWEEN ABOUT 20 PERCENT AND ABOUT 50 PERCENT BY WEIGHT OF SAID LIQUID PLASTICIZER, SEPARATING THE RESULTING NITROCELLULOSE POWDER GRAINS FROM EXCESS LIQUID PLASTICIZER, AND SUBJECTING THE GRAINS TO A PRESSURE BETWEEN ABOUT 1,000 AND ABOUT 10,000 POUNDS PER SQUARE INCH AT AMBIENT TEMPERATURE UNTIL THE GRAINS ADHERE TOGETHER TO FROM A CONSOLIDATED BODY OF INDIVIDUAL GRAINS, SAID BODY BEING CAPABLE OF FRAGMENTING INTO INDIVIDUAL GRAINS WHEN SUBJECTED TO A PRIMER BLAST.
Claim 2
Independent Claim
135 words
A METHOD FOR PREPARING A ONE-PIECE PROPELLENT POWDER CHARGE WHICH BURNS AS A GRANULAR NITROCELLULOSE PROPELLENT WHICH COMPRISES ADMIXING NITROCELLULOSE POWDER GRAINS WITH A NON-VOLATILE LIQUID PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF NITROGLYCERING BUTANE TRIOL TRINITRATE, DIGLYCOL DINITRATE, ETHYLENE GLYCOL DINITRATE, DIBUTYL PHTHALATE, DIMETHYL SEBACATE, DIBUTYL SUCCINATE, DIBUTYL ADIPATE, TRIACETIN, ETHYL DIPHENYL PHOSPHATE, AND TRIBUTYL PHOSPHATE, UNTIL SAID NITROCELLULOSE POWDER GRAINS CONTAIN BETWEEN ABOUT 20 PERCENT AND ABOUT 50 PERCENT BY WEIGHT OF SAID LIQUID PLASTICIZER, SEPARATING THE RESULTING NITROCELLULOSE POWDER GRAINS FROM EXCESS LIQUID PLASTICIZER, AND SUBJECTING THE GRAINS TO A PRESSURE BETWEEN ABOUT 1,000 AND ABOUT 10,000 POUNDS PER SQUARE INCH AT AMBIENT TEMPERATURE UNTIL THE GRAINS ADHERE TOGETHER TO FROM A CONSOLIDATED BODY OF INDIVIDUAL GRAINS, SAID BODY BEING CAPABLE OF FRAGMENTING INTO INDIVIDUAL GRAINS WHEN SUBJECTED TO A PRIMER BLAST.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |