Patent FR985536A successfully refreshed from Google Patents.
US3286115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent lamp with boric acid or boric oxide used in conjunction with the zinc sulphide layer
Assignee: EMI Group Ltd
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Filing: 1964-02-24
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Granted: 1966-11-15
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Ranby Peter Whitten
- 👤 Smith David William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:04
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; H05B33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN ELECTROLUMINESCENT DEVICE COMPRISING A HERMETICALLY SEALED FLEXIBLE ENVELOPE AT LEAST A PORTION OF WHICH IS LIGHT-TRANSMITTING, AND AN ELECTROLUMINESCENT CELL EMBEDDED IN SAID ENVELOPE, SAID CELL COMPRISING A PAIR OF SPACED ELECTRODES SUPERPOSED IN FACE TO FACE RELATIONSHIP AT LEAST ONE OF SAID ELECRODES BEING LIGHT-TRANSMITTING, MEANS FOR CONDUCTING CURRENT TO EACH OF SAID ELECTRODES, AND A LAYER OF A ZINC SULPHIDE BEING SUBSTANTIALLY IN CONDISPERSED IN AN ORGANIC BINDER SANDWICHED BETWEEN SAID ELECTRODES, SAID ZINC SULPHIDE BEING SUBSTANTIALLY IN CONTACT WITH A MATERIAL CONSISTING ESSENTIALLY OF A NUMBER SELECTED FROM THE GROUP CONSISTING OF BORIC ACID AND BORIC OXIDE.
Claim 2
Dependent Claim
101 words
AN ELECTROLUMINESCENT DEVICE COMPRISING A HERMETICALLY SEALED FLEXIBLE ENVELOPE AT LEAST A PORTION OF WHICH IS LIGHT-TRANSMITTING, AND AN ELECTROLUMINESCENT CELL EMBEDDED IN SAID ENVELOPE, SAID CELL COMPRISING A PAIR OF SPACED ELECTRODES SUPERPOSED IN FACE TO FACE RELATIONSHIP AT LEAST ONE OF SAID ELECRODES BEING LIGHT-TRANSMITTING, MEANS FOR CONDUCTING CURRENT TO EACH OF SAID ELECTRODES, AND A LAYER OF A ZINC SULPHIDE BEING SUBSTANTIALLY IN CONDISPERSED IN AN ORGANIC BINDER SANDWICHED BETWEEN SAID ELECTRODES, SAID ZINC SULPHIDE BEING SUBSTANTIALLY IN CONTACT WITH A MATERIAL CONSISTING ESSENTIALLY OF A NUMBER SELECTED FROM THE GROUP CONSISTING OF BORIC ACID AND BORIC OXIDE.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |