US2480674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron method of porosity logging
Assignee: Well Surveys Inc
•
Filing: 1944-04-13
•
Granted: 1949-08-30
•
Expires: 1964-04-13
Abstract
No abstract record available.
Inventors
- 👤 William L Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/107
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2341581A
Cited
US2349712A
Cited
US2352993A
Cited
US2231577A
Cited
US2358945A
Cited
US2335409A
Cited
US2339129A
Cited
US2350154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |