Patent US3579728A successfully refreshed from Google Patents.
US3579728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer separation
Assignee: Applied Automation Inc
•
Filing: 1969-12-05
•
Granted: 1971-05-25
•
Expires: 1989-12-05
Abstract
Abstract MEANS FOR PASSING A SOLUTION OF A SOLID POLYMER DIRECTLY FROM A REACTOR AND FLASHING IT INTO A VENTED EXTRUDER, ANALYZING THE EXTRUDATE AND CONTROLLING THE REACTION IN RESPONSE THERETO.
Inventors
- 👤 Richard K Reid
- 👤 Richard O Welty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:57
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |