Patent US2931924A successfully refreshed from Google Patents.
Patent US3157362A successfully refreshed from Google Patents.
US3157362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for producing a strong photoluminescent light
Assignee: Anicet Anstalt
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Filing: 1962-07-06
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Granted: 1964-11-17
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Expires: 1982-07-06
Abstract
No abstract record available.
Inventors
- 👤 Waly Moustapha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:41
CPC Classifications
F; F21; F21K; F21K2/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A LIGHTING DEVICE ACTING AS A PHOTOLUMINESCENT LAMP AND COMPRISING A RELATIVELY FLAT CHAMBER FORMED WITH TWO OPPOSITE, RELATIVELY CLOSELY SPACED WALLS CONSISTING OF TWO SUBSTANTIALLY PLANE AND PARALLEL PLATES LEAVING A GAP THEREBETWEEN AND COATED ON THEIR CONFRONTING INNER FACES RESPECTIVELY WITH A PHOSPHOR-FORMING LAYER OF STABLE FLUORESCENT SUBSTANCES OF INORGANIC ORIGIN SELECTED TO HAVE THEIR MAXIMUM PHOTOSENSITIVITY FOR THE RADIATION OF 2537 ANGSTROMS WAVELENGTH, AT LEAST ONE OF SAID PLATES BEING MADE OF TRANSLUCENT LIGHT-DIFFUSING GLASS SELECTED FROM THE GROUP INCLUDING GROUND GLASSES AND OPALINE GLASSES AND THE THICKNESS OF THE PHOSPHOR-FORMING LAYER ON SAID TRANSLUCENT PLATE RANGING FROM 10 TO 30 MICRONS, A SOURCE OF ELECTROMAGNETIC RADIATIONS CONSISTING OF A SET OF AT LEAST ONE GROUP OF CYLINDRICAL ELECTRIC DISCHARGE TUBES OF THE MERCURY VAPOR TYPE GENERATING AN EMISSION OF ULTRA-VIOLET RAYS OF 2537 ANGSTROMS WAVELENGTH, SAID TUBES BEING CONNECTED IN SERIES AND LOCATED IN THE GAP LEFT BETWEEN SAID TWO PLATES, AND MEANS FOR DESTROYING THE OZONE PRODUCED DURING THE OPERATION OF SAID TUBES.
Claim 2
Dependent Claim
168 words
A LIGHTING DEVICE ACTING AS A PHOTOLUMINESCENT LAMP AND COMPRISING A RELATIVELY FLAT CHAMBER FORMED WITH TWO OPPOSITE, RELATIVELY CLOSELY SPACED WALLS CONSISTING OF TWO SUBSTANTIALLY PLANE AND PARALLEL PLATES LEAVING A GAP THEREBETWEEN AND COATED ON THEIR CONFRONTING INNER FACES RESPECTIVELY WITH A PHOSPHOR-FORMING LAYER OF STABLE FLUORESCENT SUBSTANCES OF INORGANIC ORIGIN SELECTED TO HAVE THEIR MAXIMUM PHOTOSENSITIVITY FOR THE RADIATION OF 2537 ANGSTROMS WAVELENGTH, AT LEAST ONE OF SAID PLATES BEING MADE OF TRANSLUCENT LIGHT-DIFFUSING GLASS SELECTED FROM THE GROUP INCLUDING GROUND GLASSES AND OPALINE GLASSES AND THE THICKNESS OF THE PHOSPHOR-FORMING LAYER ON SAID TRANSLUCENT PLATE RANGING FROM 10 TO 30 MICRONS, A SOURCE OF ELECTROMAGNETIC RADIATIONS CONSISTING OF A SET OF AT LEAST ONE GROUP OF CYLINDRICAL ELECTRIC DISCHARGE TUBES OF THE MERCURY VAPOR TYPE GENERATING AN EMISSION OF ULTRA-VIOLET RAYS OF 2537 ANGSTROMS WAVELENGTH, SAID TUBES BEING CONNECTED IN SERIES AND LOCATED IN THE GAP LEFT BETWEEN SAID TWO PLATES, AND MEANS FOR DESTROYING THE OZONE PRODUCED DURING THE OPERATION OF SAID TUBES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |