Patent US1140837A successfully refreshed from Google Patents.
Patent US3660305A successfully refreshed from Google Patents.
US3660305A
Expired / Lapsed
US
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Foam control in liquid hydrocarbons
Assignee: ChampionX LLC
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Filing: 1968-06-06
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Granted: 1972-05-02
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Expires: 1988-06-06
Abstract
Abstract IMPROVED DEFOAMING COMPOSITIONS ARE AFFORDED BY COMBINING ACETYLENIC ALCOHOLS WITH KNOWN SILICONE ANTIFOAMS. PREFERRED ARE ACETYLENIC GLYCOLS WHICH CONTAIN FROM 8 TO 18 CARBON ATOMS IN AN ALIPHATIC GROUPING.
Inventors
- 👤 Raymond J Michalski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:20
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |