US3594393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of polyurethanes as demulsifiers
Assignee: Baker Petrolite LLC
•
Filing: 1968-12-18
•
Granted: 1971-07-20
•
Expires: 1988-12-18
Abstract
Abstract A PROCESS OF EMPLOYING POLYURETHANES AS DEMULSIFERS IN PREVENTING, BREAKING AND/OR RESOLVING EMULSIONS OF THE WATER-IN-OIL TYPE, AND MORE PARTICULARLY PETROLEUM EMULSIONS.
Inventors
- 👤 Rudolf S Buriks
- 👤 Franklin E Mange
- 👤 Patrick M Quinlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:33
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/4845
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |