US2800459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of froth
Assignee: Stamicarbon BV
•
Filing: 1954-04-06
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Granted: 1957-07-23
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Expires: 1974-04-06
Abstract
No abstract record available.
Inventors
- 👤 Dijksman Cornelis
- 👤 Freerk J Fontein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:53
CPC Classifications
C; C13; C13B; C13B25/00; C13B25/02; C08; C08B; C08B30/00; C08B30/04; C08B30/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN THE TREATMENT OF A LIQUID MATERIAL CONTAINING SOLUBLE ALBUMEN AND AIR BY A PROCESS INVOLVING THE CONTINUOUS FORMATION OF BOTH COARSE AND FINE FROTH, REMOVAL OF SAID FROTH FROM THE LIQUID MATERIAL AND SUBSEQUENT BREAKING DOWN OF THE REMOVED FROTH, THE IMPROVEMENT WHICH COMPRISES REMOVING THE COARSE AND FINE FROTH SEPARATELY FROM SAID LIQUID MATERIAL IN TWO SUCCCESSIVE ZONE BY FIRST REMOVING SAID COARSE FROTH IN ONE ZONE AND THEN REMOVING SAID FINE FROTH IN THE OTHER ZONE AND THEREAFTER SPARATELY BREAKING DOWN THE THUS-REMOVED COARSE FROTH AND FINE FROTH BY FORCING BOTH SAID COARSE FROTH AND SAID FINE FORTH AGAINST A RIGID SURFACE.
Claim 2
Dependent Claim
105 words
IN THE TREATMENT OF A LIQUID MATERIAL CONTAINING SOLUBLE ALBUMEN AND AIR BY A PROCESS INVOLVING THE CONTINUOUS FORMATION OF BOTH COARSE AND FINE FROTH, REMOVAL OF SAID FROTH FROM THE LIQUID MATERIAL AND SUBSEQUENT BREAKING DOWN OF THE REMOVED FROTH, THE IMPROVEMENT WHICH COMPRISES REMOVING THE COARSE AND FINE FROTH SEPARATELY FROM SAID LIQUID MATERIAL IN TWO SUCCCESSIVE ZONE BY FIRST REMOVING SAID COARSE FROTH IN ONE ZONE AND THEN REMOVING SAID FINE FROTH IN THE OTHER ZONE AND THEREAFTER SPARATELY BREAKING DOWN THE THUS-REMOVED COARSE FROTH AND FINE FROTH BY FORCING BOTH SAID COARSE FROTH AND SAID FINE FORTH AGAINST A RIGID SURFACE.
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |