Patent US2610149A successfully refreshed from Google Patents.
US2610149A
Expired / Lapsed
US
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Method and means of preventing fluid loss through porous walls
Assignee: Magnet Cove Barium Corp
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Filing: 1949-08-10
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Granted: 1952-09-09
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Expires: 1969-08-10
Abstract
No abstract record available.
Inventors
- 👤 Orien W Van Dyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:20
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/506; C09K8/508; C09K8/514
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
THE METHOD OF PREVENTING DRILLING FLUID LOSS IN EARTH BORE HOLES WHICH COMPRISES INTRODUCING INTO THE BORE HOLE A QUANTITY OF SHREDDED RIPENED FLAX STRAW COMPRISING A FLUFFY MASS OF FINE FIBERS HAVING SHIVES INTERSPERSED THERETHROUGH.
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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |