US3700587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone oil antifoam
Assignee: ChampionX LLC
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Filing: 1971-03-01
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Granted: 1972-10-24
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Expires: 1991-03-01
Abstract
Abstract THE FOAMING OCCAISONED BY THE CONVERSION OF RESIDUAL PETROLEUM STOCKS INTO COKE BY DELAYED COKING PROCESS IS CONTROLLED BY TREATING SUCH STOCKS WITH A POLYDIMETHYL SIOLOXANE WHICH HAS A CENTISTOKE VISCOSITY OF AT LEAST 150,000.
Inventors
- 👤 James A Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:04
CPC Classifications
C; C10; C10B; C10B57/00; C10B57/04; C10B57/06; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409; C10B55/00
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |