US2962926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nephelometer
Assignee: Phillips Petroleum Co
•
Filing: 1956-06-04
•
Granted: 1960-12-06
•
Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 Eldon J Marak
- 👤 Jr Hi W Staten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:42
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/27; G01N21/47; G01N21/49; G01N21/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2528924A
Cited
US1717702A
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US2301367A
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US2474098A
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US2547212A
Cited
US2583143A
Cited
US2673297A
Cited
US2858727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |