Patent US2911536A successfully refreshed from Google Patents.
US2911536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneous neutron and gamma ray well logging system
Assignee: Pgac Dev Co
•
Filing: 1951-06-12
•
Granted: 1959-11-03
•
Expires: 1971-06-12
Abstract
No abstract record available.
Inventors
- 👤 Serge A Scherbatskoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:55
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
IN A WELL LOGGING SYSTEM FOR SINULTANEOUSLY DETECTING RADIATIONS OF TWO DIFFERENT TYPES, THE COMBINATION OF
Claim 2
Dependent Claim
16 words
IN A WELL LOGGING SYSTEM FOR SINULTANEOUSLY DETECTING RADIATIONS OF TWO DIFFERENT TYPES, THE COMBINATION OF
References Cited (Backward Citations)
US2483394A
Cited
US2481014A
Cited
US2580213A
Cited
US2495826A
Cited
US2504888A
Cited
US2580192A
Cited
US2536228A
Cited
US2638273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |