US3040499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater stage treatment for hydrocarbon emulsions
Assignee: H2 OIL ENGINEERING Corp
•
Filing: 1956-05-14
•
Granted: 1962-06-26
•
Expires: 1976-05-14
Abstract
No abstract record available.
Inventors
- 👤 Russell D May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:03
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2832431A
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US2868313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |