US3067356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lamp
Assignee: GTE Sylvania Inc
•
Filing: 1960-04-06
•
Granted: 1962-12-04
•
Expires: 1980-04-06
Abstract
No abstract record available.
Inventors
- 👤 John G Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:10
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AN ELECTRON DISCHARGE LAMP COMPRISING: A GLASS ENVELOPE, MERCURY VAPOR AND MEANS THROUGH WHICH AN ELECTIRC DISCHARGE IS PRODUCED WITHIN SAID ENVELOPE, A TRANSPARENT BARRIER LAYER OF SUBSTANTIALLY ALKALI-FREE AL2O3 DISPOSED DIRECTLY UPON AND ADHERING TO THE INNER SURFACE OF SAID ENVELOPE OT INHIBIT THE FORMATION OF A MERCURYALKALI AMALGAM ON SAID ENVELOPE.
Claim 2
Dependent Claim
53 words
AN ELECTRON DISCHARGE LAMP COMPRISING: A GLASS ENVELOPE, MERCURY VAPOR AND MEANS THROUGH WHICH AN ELECTIRC DISCHARGE IS PRODUCED WITHIN SAID ENVELOPE, A TRANSPARENT BARRIER LAYER OF SUBSTANTIALLY ALKALI-FREE AL2O3 DISPOSED DIRECTLY UPON AND ADHERING TO THE INNER SURFACE OF SAID ENVELOPE OT INHIBIT THE FORMATION OF A MERCURYALKALI AMALGAM ON SAID ENVELOPE.
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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |