Patent US3368627A successfully refreshed from Google Patents.
US3368627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of well treatment employing volatile fluid composition
Assignee: Schlumberger Technology Corp
•
Filing: 1966-03-21
•
Granted: 1968-02-13
•
Expires: 1986-03-21
Abstract
No abstract record available.
Inventors
- 👤 Robert E Hurst
- 👤 Charles F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:01
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/2605; E21B43/16; E21B43/166; E21B43/168
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |