US4155025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-pressure mercury-vapor discharge ultraviolet radiant energy lamp
Assignee: Osram GmbH
•
Filing: 1978-04-24
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Granted: 1979-05-15
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Expires: 1998-04-24
Abstract
Abstract A high-pressure mercury-vapor discharge lamp having a fill which comprises a combination of any two or more elements selected from iron, nickel, and cobalt. The lamp is a strong ultraviolet radiator particularly having the radiation in the UV range of between about 310 and 350 nm substantially enhanced. The lamps are useful in industry particularly as a UV source in the graphic arts field, and for a strong source of ultraviolet radiation for humans, particularly radiation in the aforenoted range of wavelengths.
Inventors
- 👤 Alexander Dobrusskin
- 👤 Gunter Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:37
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/06; H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
96 words
A high-pressure mercury-vapor discharge ultraviolet radiant energy lamp comprising a radiation source mounted within an ultraviolet transmissive envelope, said envelope containing the halogen vapor discharge fill comprising mercury and at least one combination of any two or more iron group elements selected from the group consisting of iron, nickel and cobalt, the total amount of said iron group elements being from about 0.01 to 1 mgr/cc of fill, said lamp having ultraviolet radiant energy output in the range of from about 310 to 350 nm corresponding to about 6% of the power input to said lamp.
Claim 2
Dependent Claim
96 words
A high-pressure mercury-vapor discharge ultraviolet radiant energy lamp comprising a radiation source mounted within an ultraviolet transmissive envelope, said envelope containing the halogen vapor discharge fill comprising mercury and at least one combination of any two or more iron group elements selected from the group consisting of iron, nickel and cobalt, the total amount of said iron group elements being from about 0.01 to 1 mgr/cc of fill, said lamp having ultraviolet radiant energy output in the range of from about 310 to 350 nm corresponding to about 6% of the power input to said lamp.
Claim 3
Dependent Claim
17 words
The lamp of claim 1 wherein said combination of iron group elements consists of nickel and cobalt.
Claim 4
Dependent Claim
17 words
The lamp of claim 1 wherein said combination of iron group elements consists of iron and cobalt.
Claim 5
Dependent Claim
17 words
The lamp of claim 1 wherein said combination of iron group elements consists of nickel and iron.
Claim 6
Dependent Claim
18 words
The lamp of claim 1 wherein said combination of iron group elements consists of nickel, cobalt and iron.
Claim 7
Dependent Claim
42 words
The lamp of claim 1 wherein said combination of iron group elements includes iron as one of the iron group elements in an amount not in excess of 50% by weight of the total weight of said combination of iron group elements.
Claim 8
Dependent Claim
30 words
The lamp according to any of claims 1 through 6 containing an amount of halogen substantially equivalent to the stoichiometric amount for the formation of the halides of said metals.
Claim 9
Dependent Claim
46 words
The lamp of claim 7 wherein the halogen is selected from the group consisting of iodine and bromine, and said halogen is introduced into the fill in the form of at least one halide selected from the group consisting of HgI 2 and HgBr 2 .
Claim 10
Dependent Claim
15 words
The lamp of claim 8 wherein said fill also contains argon as a starter gas.
Claim 11
Dependent Claim
14 words
The lamp of claim 1 wherein said fill also contains an inert starter gas.
Claim 12
Dependent Claim
23 words
The lamp of claim 1 wherein the total amount of said iron group elements is from about 0.06 to 0.6 mgr/cc of fill.
References Cited (Backward Citations)
GB1290189A
Cited
US3590307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |