Patent US2920047A successfully refreshed from Google Patents.
US2920047A
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Defoaming and demulsification
Assignee: GAF Chemicals Corp
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Filing: 1954-12-30
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Granted: 1960-01-05
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Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 Robert C Hyatt
- 👤 Anthony J Martinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:10
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A PROCESS FOR BREAKING A WATER-IN OIL EMULSION COMPRISING SUBJECTING THE EMULSION TO THE ACTION OF A MIXTURE OF AGENTS OF THE FORMULA
Claim 2
Dependent Claim
23 words
A PROCESS FOR BREAKING A WATER-IN OIL EMULSION COMPRISING SUBJECTING THE EMULSION TO THE ACTION OF A MIXTURE OF AGENTS OF THE FORMULA
References Cited (Backward Citations)
US2052282A
Cited
US2214784A
Cited
US2514399A
Cited
US2562878A
Cited
US2599538A
Cited
US2686766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |