US2465319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric linear terephthalic esters
Assignee: EIDP Inc
•
Filing: 1945-09-24
•
Granted: 1949-03-22
•
Expires: 1965-09-24
Abstract
No abstract record available.
Inventors
- 👤 Whinfield John Rex
- 👤 Dickson James Tennant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:19
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/183; C08G63/78; C08G63/82; C08G63/826; C08G63/83; C08G63/84; C08G63/87; D01F; D01F6/00; D01F6/58; D01F6/62; Y; Y10; Y10S; Y10S264/00; Y10S264/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2071250A
Cited
GB414665A
Cited
US2249950A
Cited
US2282827A
Cited
US2312879A
Cited
US2437046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-21 | 1952-09-20 | 1953-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-21 | 1956-09-20 | 1957-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-21 | 1960-09-20 | 1961-03-22 | $7700.00 | Window Closed / Lapsed |