US3427370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin recovery system
Assignee: Bayer AG
•
Filing: 1963-07-25
•
Granted: 1969-02-11
•
Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 Hermann Schnell
- 👤 Hans Helmut Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:06
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/40; C08B; C08B3/00; C08B3/22; C08C; C08C19/00; C08C19/12; C08C2/00; C08C2/06; C08J; C08J3/00; C08J3/12; C08J3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR REMOVING FROM A WATER INSOLUBLE SYNTHETIC RESIN SOLUTION A SOLVENT FOR SAID RESIN WHICH COMPRISES INTRODUCING A MIXTURE OF SAID SOLUTION, STEAM AND WATER INTO A TUBULAR PASSAGE WHILE HEATING SAID MIXTURE TO A TEMPERATURE OF AT LEAST THE BOILING POINT OF SAID SOLVENT, SAID MIXTURE AT THE POINT OF INTRODUCTION INTO SAID TUBULAR PASSAGE UNDER FLOW CONDITIONS HAVING A REYNOLDS NUMBER OF AT LEAST ABOUT 5,000 AND A RESIDENCE TIME IN SAID TUBULAR PASSAGE OF AT LEAST ABOUT 5X10-2 SECONDS, VOLATILIZING SAID SOLVENT FROM SAID MIXTURE AND OBTAINING THEREBY A SUBSTANTIALLY SOLVENT-FREE SOLID RESIN IN AN AQUEOUS MEDIUM.
Claim 2
Dependent Claim
102 words
A PROCESS FOR REMOVING FROM A WATER INSOLUBLE SYNTHETIC RESIN SOLUTION A SOLVENT FOR SAID RESIN WHICH COMPRISES INTRODUCING A MIXTURE OF SAID SOLUTION, STEAM AND WATER INTO A TUBULAR PASSAGE WHILE HEATING SAID MIXTURE TO A TEMPERATURE OF AT LEAST THE BOILING POINT OF SAID SOLVENT, SAID MIXTURE AT THE POINT OF INTRODUCTION INTO SAID TUBULAR PASSAGE UNDER FLOW CONDITIONS HAVING A REYNOLDS NUMBER OF AT LEAST ABOUT 5,000 AND A RESIDENCE TIME IN SAID TUBULAR PASSAGE OF AT LEAST ABOUT 5X10-2 SECONDS, VOLATILIZING SAID SOLVENT FROM SAID MIXTURE AND OBTAINING THEREBY A SUBSTANTIALLY SOLVENT-FREE SOLID RESIN IN AN AQUEOUS MEDIUM.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |