Patent US3302733A successfully refreshed from Google Patents.
US3302733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing a permeable porous medium
Assignee: ExxonMobil Upstream Research Co
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Filing: 1963-07-01
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Granted: 1967-02-07
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:19
CPC Classifications
E; E21; E21B; E21B25/00; E21B25/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A PROCESS FOR THE RECOVERY OF CORE SAMPLES FROM A BOREHOLE IN THE EARTH WHICH COMPRISES ADVANCING A ROTARY CORE-BIT INTO THE EARTH AT THE BOTTOM OF THE BOREHOLE, WHILE CIRCULATING DOWNHOLE AN AQUEOUS DISPERSION OF FINELY DIVIDED OIL-EXTENDED RECLAIMED RUBBER, WHEREBY THE SAMPLES RECOVERED ARE SEALED SUBSTANTIALLY AS CUT, THEREBY CAPTURING THE ORIGINAL FLUIDS CONTAINED THEREIN.
References Cited (Backward Citations)
US3123158A
Cited
US3158209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |