US4624140C1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid medium capacitive displacement sensor
Assignee: OPTIMA SENSOR SYSTEMS Inc
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Filing: 1984-07-30
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Granted: 2001-01-30
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Expires: 2004-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jack A Ekchian
- 👤 Robert W Hoffman
- 👤 Leon Ekchian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:36
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/02; G01C9/06; G01C9/18; G01C9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-01-30 | 2004-07-31 | 2005-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-30 | 2008-07-31 | 2009-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-30 | 2012-07-31 | 2013-01-30 | $7700.00 | Window Closed / Lapsed |