US2471023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly polymeric linear esters
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1946-11-21
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Granted: 1949-05-24
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Expires: 1966-11-21
Abstract
No abstract record available.
Inventors
- 👤 Cook James Gordon
- 👤 Dickson James Tennant
- 👤 Lowe Arthur Reginald
- 👤 Whinfield John Rex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:35
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/664; C08G63/02; C08G63/06; C08G63/065; D; D01; D01F; D01F6/00; D01F6/58; D01F6/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2071250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |