US2792374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous defoamants
Assignee: ExxonMobil Oil Corp
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Filing: 1953-01-14
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Granted: 1957-05-14
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Expires: 1973-01-14
Abstract
No abstract record available.
Inventors
- 👤 John S Bradley
- 👤 John J Giammaria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:40
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
AN AQUEOUS SYSTEM SUBJECT TO FOAMING CONTAINING A SMALL AMOUNT, SUFFICIENT TO REDUCE THE FOAMING THEREOF, OF AT LEAST ONE PHOSPHORUS-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
34 words
AN AQUEOUS SYSTEM SUBJECT TO FOAMING CONTAINING A SMALL AMOUNT, SUFFICIENT TO REDUCE THE FOAMING THEREOF, OF AT LEAST ONE PHOSPHORUS-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) A COMPOUND HAVING THE FORMULA
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) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |