Patent US2921846A successfully refreshed from Google Patents.
US2921846A
Expired / Lapsed
US
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Thickened or gelled normally liquid nitroparaffin propellants
Assignee: Midland Chemical Corp
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Filing: 1955-02-11
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Granted: 1960-01-19
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Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 Leo J Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:59
CPC Classifications
C; C06; C06B; C06B25/00; C06B25/36; C06B23/00; C06B23/001
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A GELLED OR THICKENED NORMALLY LIQUID COMPOSITION CONSISTING OF A NOTROPARAFFIN AND AS A THICKENER A DEXTRANATE SELECTED FROM THE GROUP CONSISTING OF DEXTRAN NITRATE AND DEXTRAN NITRATE SULFATE SAID DEXTRANATE BEING PRESENT IN AMOUNT OF FROM 5% TO 15% BY WEIGHT OF SAID COMPOSITION TO PRODUCE A THICKENED OR SYRUPY NITROPARAFFIN.
References Cited (Backward Citations)
US2039046A
Cited
US2643184A
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US2584803A
Cited
US2690964A
Cited
US2712989A
Cited
US2551554A
Cited
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 |