US3060501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treatment of polymers
Assignee: Crawford and Russell Inc
•
Filing: 1960-05-27
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Granted: 1962-10-30
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Expires: 1980-05-27
Abstract
No abstract record available.
Inventors
- 👤 Carl L Beal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:56
CPC Classifications
C; C08; C08C; C08C2/00; C08C2/06; C08F; C08F6/00; C08F6/06; C08F6/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
APPARATUS FOR THE REMOVAL OF SOLVENT FROM A POLYMER SOLUTION COMPRISING IN COMBINATION, A TROUGH HAVING A CLOSED END AND AN OPEN END, A POLYMER SOLUTION INJECTOR AT THE CLOSED END OF SAID TROUGH, MEANS FOR CAUSING A HEAT TRANSFER LIQUID TO FLOW ALONG SAID TROUGH FROM THE CLOSED
Claim 2
Dependent Claim
49 words
APPARATUS FOR THE REMOVAL OF SOLVENT FROM A POLYMER SOLUTION COMPRISING IN COMBINATION, A TROUGH HAVING A CLOSED END AND AN OPEN END, A POLYMER SOLUTION INJECTOR AT THE CLOSED END OF SAID TROUGH, MEANS FOR CAUSING A HEAT TRANSFER LIQUID TO FLOW ALONG SAID TROUGH FROM THE CLOSED
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |