US5142184B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode field emission device with integral emitter ballasting
Assignee: Motorola Solutions Inc
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Filing: 1990-02-09
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Granted: 1995-11-21
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Expires: 2010-02-09
Abstract
Abstract A cold cathode field emission device that includes a ballast resistor (202, 303, 402) integrally formed therewith and coupled to the emitter (204, 302, 403) to allow appropriate compensation for manufacturing and performance variations in field emission from the attached emitter.
Inventors
- 👤 Robert C Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:51
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/44; H01J3/00; H01J3/02; H01J3/021; H01J3/022; H01J2201/00; H01J2201/30; H01J2201/319
Claims Analysis
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References Cited (Backward Citations)
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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) | 1998-11-20 | 1999-05-22 | 1999-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-20 | 2003-05-22 | 2003-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-20 | 2007-05-22 | 2007-11-21 | $7700.00 | Window Closed / Lapsed |