US3420694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural coated transparent colored lamp and method of forming same
Assignee: General Electric Co
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Filing: 1966-02-01
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Granted: 1969-01-07
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Expires: 1986-02-01
Abstract
No abstract record available.
Inventors
- 👤 William G James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:53
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/3405; H; H01; H01K; H01K3/00; H01K3/005; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
THE METHOD OF FORMING A WEATHER RESISTANT TRANSPARENT COLOR COATING ON AN ELECTRIC LAMP BULB WHICH COMPRISES FIRST COATING THE OUTER BULB SURFACE WITH A SOLUTION OF A COLORED CELLULOSIC LACQUER, DRYING THE SAID FIRST COATING, AND THEN COATING THE OUTER BULB SURFACE WITH A SECOND SOLUTION CONSISTING ESSENTIALLY OF POLY (BISPHENOL-A-CARBONATE) HAVING AN INTRINSIC VISCOSITY OF ABOUT 0.97 AND A CHLORINATED SOLVENT THEREFOR AND DILUENT SUFFICIENT TO PROVIDE A SOLUTION CONTAINING ABOUT 4% BY WEIGHT SOLIDS, AND DRYING THE SAID SECOND SOLUTION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |