US3364157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diisocyanate coupling of oxymethylene polymer and dissimilar organic polymer
Assignee: Celanese Corp
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Filing: 1964-06-30
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Granted: 1968-01-16
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Expires: 1984-06-30
Abstract
No abstract record available.
Inventors
- 👤 George W Halek
- 👤 Frank M Berardinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:48
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/38; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/10; C07D207/16; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/4009; C08G18/4036; C08G18/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |