US5079476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulated field emission device
Assignee: Motorola Solutions Inc
•
Filing: 1990-02-09
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Granted: 1992-01-07
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Expires: 2010-02-09
Abstract
Abstract A solid state field emission device having a cathode that is peripherally disposed about the anode and axially displaced with respect thereto. The device itself is encapsulated, readily manufacturable, and has comparable operating properties, vis-a-vis one another when manufactured in quantity.
Inventors
- 👤 Robert C. Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:43
CPC Classifications
H; H01; H01J; H01J3/00; H01J3/02; H01J3/021; H01J3/022; H01J21/00; H01J21/02; H01J21/06; H01J21/10; H01J21/105; H01J9/00; H01J9/02; H01J9/022; H01J9/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
25 words
A field emission device comprising: A) an anode; B) a gate peripherally disposed about the anode; and C) a cathode peripherally disposed about the anode.
Claim 2
Dependent Claim
25 words
A field emission device comprising: A) an anode; B) a gate peripherally disposed about the anode; and C) a cathode peripherally disposed about the anode.
Claim 3
Dependent Claim
22 words
The field emission device of claim 1 wherein the anode, gate, and cathode are each axially displaced with respect to one another.
Claim 4
Dependent Claim
64 words
An electronic device comprised of a plurality of field emission devices, wherein each of the field emission devices includes: A) an anode; and B) a cathode; wherein for each field emission device, the anode is positioned a distance from its related cathode by an amount substantially equal to a first value, and wherein all of the anodes are not substantially coplanar to each other.
Claim 5
Dependent Claim
64 words
An electronic device comprised of a plurality of field emission devices, wherein each of the field emission devices includes: A) an anode; and B) a cathode; wherein for each field emission device, the anode is positioned a distance from its related cathode by an amount substantially equal to a first value, and wherein all of the anodes are not substantially coplanar to each other.
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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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |