US2811649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron logging of well bores
Assignee: Union Oil Company of California
•
Filing: 1952-07-18
•
Granted: 1957-10-29
•
Expires: 1972-07-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Earle R Atkins
- 👤 Paul G Nahin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:20
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/107; G01T; G01T3/00; G01T3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
AN APPARATUS FOR NEUTRON-NEUTRON LOGGING OF WELL BORES INTO THE EARTH''S CRUST WHICH COMPRISES AN ELONGATED FLUID-TIGHT HOUSING, A SUSPENSION MEANS THEREFOR, MEANS
Claim 2
Independent Claim
23 words
AN APPARATUS FOR NEUTRON-NEUTRON LOGGING OF WELL BORES INTO THE EARTH''S CRUST WHICH COMPRISES AN ELONGATED FLUID-TIGHT HOUSING, A SUSPENSION MEANS THEREFOR, MEANS
References Cited (Backward Citations)
US2712081A
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US2480674A
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US2579994A
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US2564626A
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US2558919A
Cited
US2677772A
Cited
US2689918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |