US3305745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent structure with improved protective transparent film
Assignee: Dow Chemical Co
•
Filing: 1961-12-22
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Granted: 1967-02-21
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Clock
- 👤 James K Rieke
- 👤 Stroiwas Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:31
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/02; H05B33/04; Y; Y10; Y10S; Y10S526/00; Y10S526/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN AN ELECTROLUMINESCENT STRUCTURE COMPRISING AN ASSEMBLY COMPOSED OF AN ELECTRICALLY CONDUCTING SOLID BASE, A LAYER OF AN INTIMATE MIXTURE OF A PHOSPHOR AND A DIELECTRIC MATERIAL HAVING ONE FACE IN FIRM CONTACT THEREWITH, AN ELECTRICALLY CONDUCTING LIGHT TRANSMITTING COATING IN FIRM CONTACT WITH THE OPPOSING FACE OF SAID LAYER, THE IMPROVEMENT CONSISTING ESSENTIALLY OF A PROTECTIVE TRANSPARENT FILM OF A COPOLYMER CONSISTING ESSENTIALLY OF AN OLEFIN CONTAINING FROM 2 TO 3 CARBON ATOMS PER MOLECULE
Claim 2
Dependent Claim
76 words
IN AN ELECTROLUMINESCENT STRUCTURE COMPRISING AN ASSEMBLY COMPOSED OF AN ELECTRICALLY CONDUCTING SOLID BASE, A LAYER OF AN INTIMATE MIXTURE OF A PHOSPHOR AND A DIELECTRIC MATERIAL HAVING ONE FACE IN FIRM CONTACT THEREWITH, AN ELECTRICALLY CONDUCTING LIGHT TRANSMITTING COATING IN FIRM CONTACT WITH THE OPPOSING FACE OF SAID LAYER, THE IMPROVEMENT CONSISTING ESSENTIALLY OF A PROTECTIVE TRANSPARENT FILM OF A COPOLYMER CONSISTING ESSENTIALLY OF AN OLEFIN CONTAINING FROM 2 TO 3 CARBON ATOMS PER MOLECULE
References Cited (Backward Citations)
US3055784A
Cited
US2932323A
Cited
US3157709A
Cited
US3030542A
Cited
US3037138A
Cited
US3132120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |