US3772262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering polymers from organic solutions
Assignee: SnamProgetti SpA
•
Filing: 1971-02-18
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Granted: 1973-11-13
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Expires: 1991-02-18
Abstract
Abstract THE PRESENT INVENTION PROVIDES A PROCESS FOR RECOVERING POLYMERS OF CONJUGATED DIENE MONOMERS FROM ORGANIC SOLUTIONS BY MEANS OF TWO STRIPPERS USING STEAM AND WATER AND EFFECTING TRANSFER FROM THE FIRST TO THE SECOND STRIPPER BY A PRESSURE DIFFERENTIAL.
Inventors
- 👤 A Clementi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:46
CPC Classifications
C; C08; C08C; C08C2/00; C08C2/06; C08F; C08F10/00; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |