US3514419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked vinyl/dicarboxylic anhydride copolymers
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-03-30
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Granted: 1970-05-26
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Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Brian Benjamin Darlow
- 👤 Alexander Ramsay Maund Gibb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08F; C08F8/00; C08F8/02; C08F8/30; C08F8/32; C08F8/44; C08L; C08L35/00; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20; C08F2810/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2533635A
Cited
US2848433A
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US3417045A
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US3316195A
Cited
US3317457A
Cited
US3301920A
Cited
US3346443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |