US3078188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration process
Assignee: Rohm and Haas Co
•
Filing: 1959-06-02
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Granted: 1963-02-19
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Expires: 1979-06-02
Abstract
No abstract record available.
Inventors
- 👤 Assalini Giuseppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:08
CPC Classifications
B; B01; B01D; B01D37/00; B01D21/00; B01D21/0006; B01D21/0012; B01D21/0024; B01D21/003; B01D21/0039; B01D21/0042; B01D21/0063; B01D21/02; B01D24/00; B01D24/02; B01D24/10; B01D24/12; B01D24/46; B01D24/4605; B01D24/4631; B01D24/48; B01D24/4807; B01D24/4846; B01D36/00; B01D36/04; B01D2221/00; B01D2221/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A METHOD OF CONTINOUSLY PURIFYING AND CONCENTRATING SUGAR-CONTAINING LIQUIDS BY REMOVING UNDESIRED UNDISSOLVED SOLID NON-SUGARS FROM A MIXTURE THEREOF WITH A LIQUID WHICH ALSO CONTAINS DESIRED SOLID SUGARS IN SOLUTION, COMPRISING, PASSING THE IMPURE SUGAR-CONTAINING LIQUID DOWN THROUGH A FILTER CONTAINING AA BED OF SAND, RAKING THE SURFACE OF THE SAND BED TO BREAK UP ANY CAKE FORMING THERE, PASSING CLARIFIED SUGAR-CONTAINING LIQUID UP THROUGH THE SAND BED TO REGENERATED THE BED BY BACKWASHING OUT OF THE FILTER THE SEDIMENT ACCUMULATED ON THE BED, PASSING THE SUGAR-CONTAINING BACKWASHING LIQUID FROM THE FILTERT INTO AND THROUGH A SEDIMENTATION TANK TO CLARIFY THAT LIQUID, THEN PASSING THE THUS CLARIFIED SUGAR-CONTAINING BACKWASHING LIQUID UP THROUGH THE SAND BED AGAIN, AND AFTER A MULTIPLE NUMBER OF SUCH BACKWASHING PASSES DRAWING OFF THE PURIFIED AND MORE CONCENTRATED SUGAR-CONTAINING LIQUID.
Claim 2
Independent Claim
134 words
A METHOD OF CONTINOUSLY PURIFYING AND CONCENTRATING SUGAR-CONTAINING LIQUIDS BY REMOVING UNDESIRED UNDISSOLVED SOLID NON-SUGARS FROM A MIXTURE THEREOF WITH A LIQUID WHICH ALSO CONTAINS DESIRED SOLID SUGARS IN SOLUTION, COMPRISING, PASSING THE IMPURE SUGAR-CONTAINING LIQUID DOWN THROUGH A FILTER CONTAINING AA BED OF SAND, RAKING THE SURFACE OF THE SAND BED TO BREAK UP ANY CAKE FORMING THERE, PASSING CLARIFIED SUGAR-CONTAINING LIQUID UP THROUGH THE SAND BED TO REGENERATED THE BED BY BACKWASHING OUT OF THE FILTER THE SEDIMENT ACCUMULATED ON THE BED, PASSING THE SUGAR-CONTAINING BACKWASHING LIQUID FROM THE FILTERT INTO AND THROUGH A SEDIMENTATION TANK TO CLARIFY THAT LIQUID, THEN PASSING THE THUS CLARIFIED SUGAR-CONTAINING BACKWASHING LIQUID UP THROUGH THE SAND BED AGAIN, AND AFTER A MULTIPLE NUMBER OF SUCH BACKWASHING PASSES DRAWING OFF THE PURIFIED AND MORE CONCENTRATED SUGAR-CONTAINING LIQUID.
References Cited (Backward Citations)
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US1318363A
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GB120595A
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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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |