US2786144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for detecting hydrocarbons in soil gases
Assignee: ExxonMobil Oil Corp
•
Filing: 1951-12-12
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Granted: 1957-03-19
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Expires: 1971-12-12
Abstract
No abstract record available.
Inventors
- 👤 Paul B Weisz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:15
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/68; G01N27/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1421720A
Cited
US2112845A
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US2551544A
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US2582216A
Cited
US2485469A
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US2543859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |