US2851433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of residual liquor
Assignee: American Marietta Co
•
Filing: 1955-03-10
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Granted: 1958-09-09
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Expires: 1975-03-10
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Booty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:03
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C01; C01B; C01B25/00; C01B25/16; C01B25/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF TREATING A SOLUTION IN WATER CONTAINING SODIUM SALTS OF ORTHOPHOSPHORIC ACID AND SMALL DISSOLVED QUANTIUTIES OF PHENOL, FORMALDEHYDE, PHENOLFORMALDEHYDE, PHENOL-ALCOHOLS AND A RESIN-FORMING CONDENSATION PRODUCT OF PHENOL AND FORMALDHEYDE, WHICH COMPRISES HEATING THE SOLUTION HAVING A PH FROM 5 TO 9 AT A TEMPERATURE UPWARDLY FROM 70*C. WHEREBY TO EFFECT FORMATION OF TWO LIQUID PHASES, SEPARATING AND REMOVING FROM THE LOWER AQUEOUS PHASE AND GHERESULTINGLY CONTAINING PHENOL-FORMALDEHYDE RESIN, CONTINUING THE HEATING OF THE REAMINING AQUEOUS PHASE AND THEREBY FORMING A PRECIPITATE FROM THE REMAINING AQUEOUS FROM PHENOLIC CONSTITUTNTS OF THE ORIGINAL SOLUTION, AND SEPARATING THE PRECIPITATE FROM THE REMAINIG AQUEOUS SLAT SOLUTION CONTAINING DISSOLVED FORMALDEHYDE.
Claim 2
Independent Claim
108 words
THE METHOD OF TREATING A SOLUTION IN WATER CONTAINING SODIUM SALTS OF ORTHOPHOSPHORIC ACID AND SMALL DISSOLVED QUANTIUTIES OF PHENOL, FORMALDEHYDE, PHENOLFORMALDEHYDE, PHENOL-ALCOHOLS AND A RESIN-FORMING CONDENSATION PRODUCT OF PHENOL AND FORMALDHEYDE, WHICH COMPRISES HEATING THE SOLUTION HAVING A PH FROM 5 TO 9 AT A TEMPERATURE UPWARDLY FROM 70*C. WHEREBY TO EFFECT FORMATION OF TWO LIQUID PHASES, SEPARATING AND REMOVING FROM THE LOWER AQUEOUS PHASE AND GHERESULTINGLY CONTAINING PHENOL-FORMALDEHYDE RESIN, CONTINUING THE HEATING OF THE REAMINING AQUEOUS PHASE AND THEREBY FORMING A PRECIPITATE FROM THE REMAINING AQUEOUS FROM PHENOLIC CONSTITUTNTS OF THE ORIGINAL SOLUTION, AND SEPARATING THE PRECIPITATE FROM THE REMAINIG AQUEOUS SLAT SOLUTION CONTAINING DISSOLVED FORMALDEHYDE.
References Cited (Backward Citations)
US2489569A
Cited
US2676143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |