US3208197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion separation of fluids
Assignee: Individual
•
Filing: 1944-11-03
•
Granted: 1965-09-28
•
Expires: 1964-11-03
Abstract
No abstract record available.
Inventors
- 👤 Simon Franz Eugen
- 👤 Fuchs Klaus
- 👤 Peierls Rudolph Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:39
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D53/225; B01D53/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS FOR THE TREATMENT OF MIXTURES OF FLUIDS BY MEANS WHICH SEPARATES THE MIXTURES INTO TWO FRACTIONS OF DIFFERENT COMPOSITION BY DIFFUSION THROUGH A POROUS MEMBRANCE, IN WHICH A CASCADE OF DISTINCT STAGES OPERATING IN SERIES IS SUBDIVIDED INTO A NUMBER OF SUB-CASCADES WITHIN EACH OF WHICH ONE FRACTION FROM EACH STAGE EXCEPT THE LAST IS PASSED FORWARD TO A SUCCEEDING STAGE AND ONE FRACTION FROM EACH STAGE EXCEPT THE FIRST IS PASSED BACKWARD TO A PRECEDING STAGE, WHILE THE CORRESPONDING BUT SUBSTANTIALLY SMALLER FRACTIONS FROM THE LAST AND FIRST STAGES OF A SUB-CASCADE ARE RESPECTIVELY LED FORWARD TO A STAGE BETWEEN THE END STAGES OF A SUCCEEDING SUB-CASCADE AND BACK TO A STAGE BETWEEN THE END STAGES OF A PRECEDING SUB-CASCADE, EXCEPT IN THE CASEE OF THE FIRST AND LAST SUBCASCADES, THE CORRESPONDING FRACTIONS FROM WHICH CONSTITUTE THE FINAL OUTPUT FRACTIONS OF THE PLANT.L
Claim 2
Dependent Claim
146 words
A PROCESS FOR THE TREATMENT OF MIXTURES OF FLUIDS BY MEANS WHICH SEPARATES THE MIXTURES INTO TWO FRACTIONS OF DIFFERENT COMPOSITION BY DIFFUSION THROUGH A POROUS MEMBRANCE, IN WHICH A CASCADE OF DISTINCT STAGES OPERATING IN SERIES IS SUBDIVIDED INTO A NUMBER OF SUB-CASCADES WITHIN EACH OF WHICH ONE FRACTION FROM EACH STAGE EXCEPT THE LAST IS PASSED FORWARD TO A SUCCEEDING STAGE AND ONE FRACTION FROM EACH STAGE EXCEPT THE FIRST IS PASSED BACKWARD TO A PRECEDING STAGE, WHILE THE CORRESPONDING BUT SUBSTANTIALLY SMALLER FRACTIONS FROM THE LAST AND FIRST STAGES OF A SUB-CASCADE ARE RESPECTIVELY LED FORWARD TO A STAGE BETWEEN THE END STAGES OF A SUCCEEDING SUB-CASCADE AND BACK TO A STAGE BETWEEN THE END STAGES OF A PRECEDING SUB-CASCADE, EXCEPT IN THE CASEE OF THE FIRST AND LAST SUBCASCADES, THE CORRESPONDING FRACTIONS FROM WHICH CONSTITUTE THE FINAL OUTPUT FRACTIONS OF THE PLANT.L
References Cited (Backward Citations)
US281002A
Cited
US1452322A
Cited
US1496757A
Cited
US1700928A
Cited
GB266396A
Cited
GB367313A
Cited
US1957818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |