US3598755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam control agents
Assignee: ConocoPhillips Co
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Filing: 1968-07-05
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Granted: 1971-08-10
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Expires: 1988-07-05
Abstract
Abstract FOAMING DURING ACIDULATION OF PHOSPHATE ROCK TO PRODUCE WET-PROCESS PHOSPHORIC ACID IS GREATLY REDUCED BY ADDITION OF A REAGENT COMPRISING A MIXTURE OF ALCOHOL OF 16 OR MORE CARBONS AND A BUTYLENE OXIDE CAPPED ETHOXYLATED ALCOHOL MADE FROM AN ALCOHOL OF 10 OR MORE CARBONS.
Inventors
- 👤 John W Mcbroom
- 👤 Barry B Rein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:50
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/01; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; C01B25/16; C01B25/18; C01B25/22; C01B25/222
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |