Patent US2940959A successfully refreshed from Google Patents.
US2940959A
Expired / Lapsed
US
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Curing of polysulfide polymers with manganite coated mno2
Assignee: ATK Launch Systems LLC
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Filing: 1957-05-07
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Granted: 1960-06-14
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Expires: 1977-05-07
Abstract
No abstract record available.
Inventors
- 👤 Norman A Rosenthal
- 👤 Julian R Panek
- 👤 Keith R Cranker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:35
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/301; C; C08; C08G; C08G75/00; C08G75/14; C08L; C08L81/00; C08L81/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
METHOD FOR CURING POLYSULFIDE POLYMERS OF THE FORMULA
Claim 2
Dependent Claim
8 words
METHOD FOR CURING POLYSULFIDE POLYMERS OF THE FORMULA
References Cited (Backward Citations)
US1937488A
Cited
US2206643A
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US2221650A
Cited
US2195380A
Cited
US2553501A
Cited
US2507502A
Cited
US2728748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |