US3313846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethers and method of making same
Assignee: Celanese Corp
•
Filing: 1960-08-09
•
Granted: 1967-04-11
•
Expires: 1980-08-09
Abstract
No abstract record available.
Inventors
- 👤 Slovinsky Manuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:21
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/269
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2339066A
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US1784583A
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US2436774A
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US2457139A
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US2565487A
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US2950313A
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US2950310A
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US2940982A
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US2934505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |