US2487864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyvinyl acetals
Assignee: Akzo Nobel UK PLC
•
Filing: 1948-09-08
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Granted: 1949-11-15
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Expires: 1968-09-08
Abstract
No abstract record available.
Inventors
- 👤 Cecil W Gayler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/14; C; C08; C08F; C08F8/00; C08F8/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2356479A
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US2396209A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |