Patent US5117160A successfully refreshed from Google Patents.
US5117160A
Expired / Lapsed
US
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Rare gas discharge lamp
Assignee: USHIODENKI KABUAHIKI KAISHA
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Filing: 1990-06-19
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Granted: 1992-05-26
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Expires: 2010-06-19
Abstract
Abstract A phosphor layer is coated on an inner wall of a tubular glass bulb. A predetermined amount of a rare gas containing xenon gas as a main component thereof is sealed and enclosed in the tubular glass bulb. A pair of belt-shaped electrodes are formed on an outer wall of the enclosed glass bulb throughout substantially the entire length of the glass bulb.
Inventors
- 👤 Tsutomu Konda
- 👤 Seiichiro Fujioka
- 👤 Satoshi Tamura
- 👤 Osamu Matsubara
- 👤 Shodo Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:08
CPC Classifications
H; H01; H01J; H01J65/00; H01J65/04; H01J65/042; H01J65/046
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
A rare gas discharge lamp, wherein a phosphor layer is coated on an inner wall of a tubular glass bulb, a predetermined amount of rare gas containing xenon gas as a main component thereof is sealed and enclosed in said tubular glass bulb, a pair of belt-shaped electrodes are formed on an outer wall of said enclosed glass bulb throughout substantially the entire length of said glass bulb, and an insulating film is coated on said glass bulb between said beltshaped electrodes.
Claim 2
Dependent Claim
82 words
A rare gas discharge lamp, wherein a phosphor layer is coated on an inner wall of a tubular glass bulb, a predetermined amount of rare gas containing xenon gas as a main component thereof is sealed and enclosed in said tubular glass bulb, a pair of belt-shaped electrodes are formed on an outer wall of said enclosed glass bulb throughout substantially the entire length of said glass bulb, and an insulating film is coated on said glass bulb between said beltshaped electrodes.
Claim 3
Dependent Claim
20 words
A lamp according to claim 1, wherein the rare gas is sealed at a pressure of 45 to 100 torr.
Claim 4
Dependent Claim
22 words
A lamp according to claim 1, wherein a width of each belt-shaped electrode is set to be not less than 1 mm.
Claim 5
Dependent Claim
22 words
A lamp according to claim 1, wherein said insulating film is coated on said glass bulb as well a said belt-shaped electrodes.
Claim 6
Dependent Claim
24 words
A lamp according to claim 1, wherein said glass bulb consists of glass having a volume resistivity of not less than 1×10 9 Ωcm.
Claim 7
Dependent Claim
14 words
A lamp according to claim 1, wherein said glass bulb consists of lead glass.
Claim 8
Dependent Claim
33 words
A lamp according to claim 1, wherein end faces to be enclosed of said glass bulb are enclosed by disk-shaped enclosing glass having a melting point lower than that of said glass bulb.
Claim 9
Dependent Claim
23 words
A lamp according to claim 1, wherein an RF voltage of 20 to 100 kHz is applied to said pair of belt-shaped electrodes.
References Cited (Backward Citations)
US3826946A
Cited
JPS6012660A
Cited
US4899090A
Cited
US4871941A
Cited
US4906891A
Cited
US4909604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |