Patent US3254266A successfully refreshed from Google Patents.
US3254266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-emitting and photo-sensitive devices
Assignee: SYLVANIA THORN COLOUR TELEVISION LABORATORIES Ltd
•
Filing: 1961-01-26
•
Granted: 1966-05-31
•
Expires: 1981-01-26
Abstract
No abstract record available.
Inventors
- 👤 Fleming-Williams Bria Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:34
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; G; G02; G02F; G02F1/00; G02F1/01; G02F1/0136; G09; G09F; G09F13/00; H04; H04N; H04N7/00; H04N7/002; H04N7/005; H05B44/00; H10; H10F; H10F55/00; H10F55/10; Y; Y02; Y02B; Y02B20/00; Y02B20/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A FREQUENCY-SENSITIVE LIGHT-EMITTING DEVICE COMPRISING TWO TERMINALS, A RESONANT BODY OF PIEZO-ELECTRIC MATERIAL HAVING FIRST AND SECOND PORTIONS INDIVIDUALLY POLARIZED IN DIRECTIONS AT RIGHT ANGLES TO EACH OTHER, SAID TERMINALS BEING CONNECTED AT SPACED APART LOCATIONS TO THE SAID FIRST PORTION FOR APPLICATION OF AN EXCITING FIELD IN THE DIRECTION OF POLARIZATION OF SAID FIRST PORTION, AND ELECTROLUMINESCENT LAYER IN PHYSICAL CONTACT WITH AND ELECTRICALLY IN CIRCUIT
Claim 2
Dependent Claim
67 words
A FREQUENCY-SENSITIVE LIGHT-EMITTING DEVICE COMPRISING TWO TERMINALS, A RESONANT BODY OF PIEZO-ELECTRIC MATERIAL HAVING FIRST AND SECOND PORTIONS INDIVIDUALLY POLARIZED IN DIRECTIONS AT RIGHT ANGLES TO EACH OTHER, SAID TERMINALS BEING CONNECTED AT SPACED APART LOCATIONS TO THE SAID FIRST PORTION FOR APPLICATION OF AN EXCITING FIELD IN THE DIRECTION OF POLARIZATION OF SAID FIRST PORTION, AND ELECTROLUMINESCENT LAYER IN PHYSICAL CONTACT WITH AND ELECTRICALLY IN CIRCUIT
References Cited (Backward Citations)
US2942131A
Cited
US1808137A
Cited
US1996241A
Cited
US2816236A
Cited
US2923828A
Cited
US2911539A
Cited
US2951168A
Cited
US2976447A
Cited
US2945984A
Cited
US2981858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |