Patent US4583975A successfully refreshed from Google Patents.
US3704100A
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Polymerization apparatus
Assignee: Honeywell International Inc
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Filing: 1970-07-06
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Granted: 1972-11-28
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Expires: 1990-07-06
Abstract
Abstract APPARATUS FOR POLYMERIZATION OF E-CAPROLACTAM TO PRODUCE A POLYCAPROAMIDE POLYMER MORE RAPIDLY AND WITH THE EXTENT OF POLYMERIZATION FAR GREATER THAN HERETOFORE BY UTILIZING A VACUUM DEMOISTURIZING COLUMN WITHIN THE POLYMERIZATION TRAIN THAT UPON EXTRUSION OF SAID POLYMER THE VOLATILES ARE SUBSTANTIALLY ALL REMOVED BY AN ENTRAIN- MENT SEPARATOR MEANS WHEREBY AN IMPROVED POLYCAPROAMIDE POLYMER IS OBTAINED.
Inventors
- 👤 Ian C Twilley
- 👤 William N Russell
- 👤 Weldon H Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:14
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/04; C08G69/08; C08G69/14; C08G69/16
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |