Patent US3425899A successfully refreshed from Google Patents.
US3425899A
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Method and apparatus for breaking foam on foaming liquids and use thereof in oxidation system for regeneration of black liquor in sulfate pulp process
Assignee: GORAN A NILSSON
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Filing: 1964-11-25
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Granted: 1969-02-04
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Expires: 1984-11-25
Abstract
No abstract record available.
Inventors
- 👤 Goran A Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:57
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; D; D21; D21C; D21C11/00; D21C11/0057; Y; Y10; Y10S; Y10S159/00; Y10S159/04
Claims Analysis
Total Claims: 0
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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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |