US3274415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous discharge lamp with a reduced and unreduced actuator
Assignee: GTE Sylvania Inc
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Filing: 1963-12-31
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Granted: 1966-09-20
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Expires: 1983-12-31
Abstract
No abstract record available.
Inventors
- 👤 Martha J B Thomas
- 👤 Frank P Durkee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:04
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/34; H01J61/38; H01J61/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A HIGH PRESSURE MERCURY LAMP COMPRISING A MERCURY ARC TUBE, AN OUTER JACKET AROUND SAID ARC TUBE, SAID OUTER JACKET CONTAINING ON ITS INSIDE WALL A COATING WHICH INCLUDES AN ULTRAVIOLET EXCITABLE PHOSPHOR AND MEANS FOR SUPPORTING SAID ARC TUBE AND SUPPLYING OPERATING CURRENT THERETO, AT LEAST A PART OF SAID COATING COMPRISING A PHOSPHATE AND AN UNREDUCED ACTIVATOR, AND SAID OUTER JACKET CONTAINING A SOURCE OF REDUCING AGENT IN AN AMOUNT EFFECTIVE TO REDUCE SAID UNREDUCED ACTIVATOR TO ACTIVATING STATE AND THEREBY PRODUCE ADDITIONAL ACTIVATED PHOSPHOR DURING OPERATION OF THE LAMP.
Claim 2
Dependent Claim
92 words
A HIGH PRESSURE MERCURY LAMP COMPRISING A MERCURY ARC TUBE, AN OUTER JACKET AROUND SAID ARC TUBE, SAID OUTER JACKET CONTAINING ON ITS INSIDE WALL A COATING WHICH INCLUDES AN ULTRAVIOLET EXCITABLE PHOSPHOR AND MEANS FOR SUPPORTING SAID ARC TUBE AND SUPPLYING OPERATING CURRENT THERETO, AT LEAST A PART OF SAID COATING COMPRISING A PHOSPHATE AND AN UNREDUCED ACTIVATOR, AND SAID OUTER JACKET CONTAINING A SOURCE OF REDUCING AGENT IN AN AMOUNT EFFECTIVE TO REDUCE SAID UNREDUCED ACTIVATOR TO ACTIVATING STATE AND THEREBY PRODUCE ADDITIONAL ACTIVATED PHOSPHOR DURING OPERATION OF THE LAMP.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |