US5075603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold-cathode discharge lamp device
Assignee: Toshiba Corp
•
Filing: 1988-11-14
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Granted: 1991-12-24
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Expires: 2008-11-14
Abstract
Abstract A cold-cathode discharge lamp device including a cold-cathode discharge lamp unit and a supplemental light source for emitting light toward a discharge space between a pair of cold-electrodes of the discharge lamp unit for producing initial electrons in the discharge space.
Inventors
- 👤 Yoshiji Yoshiike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:15
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/16; H01J61/54
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A cold-cathode discharge lamp device for illuminating an object, comprising: an enclosure having a discharge gas and a pair of non-preheated discharge electrodes therein, the discharge electrodes being spaced apart from each other for defining a discharge space therebetween; means positioned near one of said electrodes for starting discharge between the discharge electrodes, the discharge starting means having a light source for emitting light toward the discharge space, said light source not requiring any initial electrons in order to emit light; and a stabilizer electrode coated on a surface of the enclosure with a strip line shape and extending in the vicinity of said discharge starting means and one of said pair of non-preheated electrodes.
Claim 2
Dependent Claim
115 words
A cold-cathode discharge lamp device for illuminating an object, comprising: an enclosure having a discharge gas and a pair of non-preheated discharge electrodes therein, the discharge electrodes being spaced apart from each other for defining a discharge space therebetween; means positioned near one of said electrodes for starting discharge between the discharge electrodes, the discharge starting means having a light source for emitting light toward the discharge space, said light source not requiring any initial electrons in order to emit light; and a stabilizer electrode coated on a surface of the enclosure with a strip line shape and extending in the vicinity of said discharge starting means and one of said pair of non-preheated electrodes.
Claim 3
Dependent Claim
32 words
The cold-cathode discharge lamp device of claim 1 also including a lamp base for mechanically coupling the cold-cathode discharge lamp device, and wherein the light source is housed in the lamp base.
Claim 4
Dependent Claim
30 words
The cold-cathode discharge lamp device of claim 1 wherein at least one of the electrodes is plate shaped, and the light source is mashed by the plate shaped discharge electrode.
Claim 5
Dependent Claim
27 words
The cold-cathode discharge lamp device of claim 1 wherein the starting means includes a plurality of the light sources, each for emitting light toward the discharge space.
Claim 6
Dependent Claim
27 words
The cold-cathode discharge lamp device of claim 2 wherein the starting means includes a pair of the light sources, each for emitting light toward the discharge space.
Claim 7
Dependent Claim
39 words
The cold-cathode discharge lamp device of claim 5 including a pair of the lamp bases for mechanically coupling the cold-cathode discharge lamp device, and wherein the one of the light sources is housed in each of the lamp bases.
Claim 8
Dependent Claim
18 words
The cold-cathode discharge lamp device of claim 1 wherein the light source includes at least an incandescent lamp.
Claim 9
Dependent Claim
18 words
The cold-cathode discharge lamp device of claim 1 wherein the light source includes at least an emitting diode.
Claim 10
Dependent Claim
19 words
The cold-cathode discharge lamp device of claim 1 wherein the light source includes at least an electro luminescent lamp.
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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) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |