US3489680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for breaking a water-in-oil emulsion
Assignee: Mobil Oil AS
•
Filing: 1967-10-30
•
Granted: 1970-01-13
•
Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 Earl S Snavely Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:12
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0217; B01D17/04; B01D17/045; B01D17/047
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3127255A
Cited
US1291857A
Cited
US2236629A
Cited
US2207399A
Cited
US2180811A
Cited
US2477318A
Cited
US3391787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |