Patent US3532677A successfully refreshed from Google Patents.
US3532677A
Expired / Lapsed
US
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Process for removing high boiling solvents from polymer products
Assignee: Celanese Corp
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Filing: 1968-09-23
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Granted: 1970-10-06
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Expires: 1988-09-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Baron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:55
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/46; C08G63/00; C08G63/88; C08G63/90; C08G65/38; C08G65/40; C08G65/4093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2957855A
Cited
US2984649A
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US2989503A
Cited
US3179642A
Cited
GB971227A
Cited
FR1407301A
Cited
US3281215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |