Patent US4071283A successfully refreshed from Google Patents.
Patent US3485805A successfully refreshed from Google Patents.
US3485805A
Expired / Lapsed
US
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N-alkyl substituted polyamide elastomers
Assignee: British Nylon Spinners Ltd
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Filing: 1965-11-10
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Granted: 1969-12-23
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Expires: 1985-11-10
Abstract
No abstract record available.
Inventors
- 👤 Clifton Douglas Cowell
- 👤 Geoffrey James Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:38
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2462430A
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US2430859A
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US2430866A
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FR1062118A
Cited
US2835653A
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US2765294A
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US2892817A
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US3027356A
Cited
US3036047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |