US2903432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-foam agent and process of inhibiting foam
Assignee: Dearborn Chemical Co
•
Filing: 1956-12-27
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Granted: 1959-09-08
•
Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Hwa Chih Ming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:25
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF INHIBITING FOAM IN AN AQUEOUS MEDIUM WHICH COMPRISES ADDING TO SAID MEDIUM A STILL BOTTOMS FRACTION RECOVERED FROM THE DISTILLATION OF AN ALIPHATIC ALCOHOL CONTAINING FROM 12 TO 20 CARBON ATOMS PER MOLECONTAINING 12 TO 20 CARBON ATOMS THEREFROM IN AN AMOUNT SUFFICIENT TO INHIBIT SUBSTANTIALLY THE TENDENCY OF SAID MEDIUM TO FOAM.
Claim 2
Independent Claim
56 words
THE METHOD OF INHIBITING FOAM IN AN AQUEOUS MEDIUM WHICH COMPRISES ADDING TO SAID MEDIUM A STILL BOTTOMS FRACTION RECOVERED FROM THE DISTILLATION OF AN ALIPHATIC ALCOHOL CONTAINING FROM 12 TO 20 CARBON ATOMS PER MOLECONTAINING 12 TO 20 CARBON ATOMS THEREFROM IN AN AMOUNT SUFFICIENT TO INHIBIT SUBSTANTIALLY THE TENDENCY OF SAID MEDIUM TO FOAM.
References Cited (Backward Citations)
US2797198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |