US2690694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light absorption analysis method
Assignee: Standard Oil Development Co
•
Filing: 1950-05-31
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Granted: 1954-10-05
•
Expires: 1970-05-31
Abstract
No abstract record available.
Inventors
- 👤 James A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:10
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2071680A
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US1418621A
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US1900477A
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US2068476A
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US2518307A
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US2545162A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |