Patent US2652265A successfully refreshed from Google Patents.
Patent US1907183A successfully refreshed from Google Patents.
Patent FR631431A successfully refreshed from Google Patents.
Patent USRE23334E successfully refreshed from Google Patents.
Patent US3574789A successfully refreshed from Google Patents.
Patent US3476189A successfully refreshed from Google Patents.
US3476189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for consolidating a permeable mass
Assignee: Shell USA Inc
•
Filing: 1967-12-14
•
Granted: 1969-11-04
•
Expires: 1987-12-14
Abstract
No abstract record available.
Inventors
- 👤 Cornelis Bezemer
- 👤 Franciscus H Meijs
- 👤 Marinus Van Zanten
- 👤 Clifford V Wittenwyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:19
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/10; C08G8/28; C09; C09K; C09K17/00; C09K17/14; C09K17/36; C09K8/00; C09K8/50; C09K8/504; C09K8/506; C09K8/508; C09K8/5086; C09K8/56
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3297086A
Cited
US3282338A
Cited
US3159662A
Cited
US3296291A
Cited
US3209826A
Cited
US3221814A
Cited
US3310111A
Cited
US3368626A
Cited
US3368625A
Cited
US3339633A
Cited
US3297089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |