US2524733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent coating material containing ethyl cellulose
Assignee: GTE Sylvania Inc
•
Filing: 1945-02-02
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Granted: 1950-10-03
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Expires: 1965-02-02
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Payne
- 👤 Malcolm L Hayes
- 👤 Demb Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:12
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/22; C09K; C09K11/00; C09K11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A FLUORESCENT COATING MATERIAL FOR FLUORESCENT LAMPS CONSISTING OF ETHYL CELLULOSE SUBSTANTIALLY ENTIRELY FREE OF METALLIC SALT IMPURITIES DISSOLVED IN AN AROMATIC HYDROCARBON AND ALCOHOL, ABOUT 90% BEING THE AROMATIC HYDROCARBON, A FLUORESCENT POWDER MIXED WITH SAID SOLUTION AND THE WHOLE DILUTED TO A CONSISTENCY SUITABLE FOR FLOWING UPON THE SURFACE OF THE LAMP ENVELOPE.
Claim 2
Dependent Claim
55 words
A FLUORESCENT COATING MATERIAL FOR FLUORESCENT LAMPS CONSISTING OF ETHYL CELLULOSE SUBSTANTIALLY ENTIRELY FREE OF METALLIC SALT IMPURITIES DISSOLVED IN AN AROMATIC HYDROCARBON AND ALCOHOL, ABOUT 90% BEING THE AROMATIC HYDROCARBON, A FLUORESCENT POWDER MIXED WITH SAID SOLUTION AND THE WHOLE DILUTED TO A CONSISTENCY SUITABLE FOR FLOWING UPON THE SURFACE OF THE LAMP ENVELOPE.
References Cited (Backward Citations)
US2118663A
Cited
US2341403A
Cited
US1599508A
Cited
US1679943A
Cited
US2039734A
Cited
US2310740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |