US2635079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifoam material
Assignee: EF Drew and Co Inc
•
Filing: 1949-09-07
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Granted: 1953-04-14
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Expires: 1969-09-07
Abstract
No abstract record available.
Inventors
- 👤 Emery I Valko
- 👤 Kamlet Jonas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:29
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A COMPOSITION SUITABLE FOR THE TREATMENT OF AQUEOUS MEDIA TO PREVENT FOAMING CONSISTING ESSENTIALLY OF A WATER DISPERSION OF A COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
26 words
A COMPOSITION SUITABLE FOR THE TREATMENT OF AQUEOUS MEDIA TO PREVENT FOAMING CONSISTING ESSENTIALLY OF A WATER DISPERSION OF A COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2484146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |