Patent US3749555A successfully refreshed from Google Patents.
US3749555A
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Polymerization reactor
Assignee: Huels AG
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Filing: 1971-11-29
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Granted: 1973-07-31
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Expires: 1991-11-29
Abstract
Abstract AGITATOR EQUIPPED REACTORS PARTICULARLY USEFUL FOR THE SUSPENSION POLYMERIZATION OF 1-BUTENE HAVING A RADIUS OF CURVATURE OF THE CYLINDRICAL INTERNAL WALL SURFACE OF 1600 TO 2750 MM., A RADIUS OF CURVATURE OF THE BOTTOM REACTOR DOME OF 2560 TO 4200 MM., AND A RADIUS OF CURVATURE OF THE BOTTOM REACTOR FLANGE OF 495 TO 700 MM.
Inventors
- 👤 G Beckmann
- 👤 J Dietrich
- 👤 K Pfeiffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:56
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; C; C08; C08F; C08F10/00; C08F10/14; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/18; B01J2219/185; Y; Y10; Y10S; Y10S526/00; Y10S526/918
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |