US3493047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonate to hydrocarbon ratio influencing thermostability of micellar dispersions
Assignee: Marathon Oil Co
•
Filing: 1968-07-22
•
Granted: 1970-02-03
•
Expires: 1988-07-22
Abstract
No abstract record available.
Inventors
- 👤 John A Davis Jr
- 👤 William J Kunzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:41
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3041275A
Cited
US3244638A
Cited
US3234143A
Cited
US3170514A
Cited
US3266570A
Cited
US3297084A
Cited
US3330343A
Cited
US3275075A
Cited
US3348611A
Cited
US3254714A
Cited
US3373809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |