US3356850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency-sensitive and photo-sensitive device
Assignee: SYLVANIA THORN COLOUR TELEVISION LABORATORIES Ltd
•
Filing: 1965-12-01
•
Granted: 1967-12-05
•
Expires: 1985-12-01
Abstract
No abstract record available.
Inventors
- 👤 Fleming-Williams Bria Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:59
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; G; G09; G09F; G09F13/00; H04; H04N; H04N7/00; H04N7/002; H04N7/005; H05B44/00; H10; H10F; H10F55/00; H10F55/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A FREQUENCY-SENSITIVE PHOTO-SENSITIVE DEVICE COMPRISING: (A) A BLOCK OF PIEZOELECTRIC MATERIAL, SAID BLOCK BEING DIVIDED BY A PLURALITY OF SLOTS FORMED THEREIN INTO A PLURALITY OF INDIVIDUAL PIEZOELECTRIC BODIES HAVING DIFFERENT RESONANT FREQUENCIES, SAID SLOT EXTENDING PARTIALLY INTO SAID BLOCK TO FORM INTERCONNECTING PIEZOELECTRIC BRIDGES CONNECTING ADJACENT PIEZOELECTRIC BODIES, (B) A PLURALITY OF PHOTOCONDUCTIVE LAYERS, EACH OF SAID LAYERS BEING CONNECTED IN PHYSICAL CONTACT WITH AND IN ELECTRICAL SERIES WITH ONE OF SAID INDIVIDUAL PIEZOELECTRIC BODIES, AND (C) MEANS FOR APPLYING A VOLTAGE ACROSS THE ELECTRICAL SERIES COMBINATIONS OF SAID BODIES AND SAID LAYERS, AN INDIVIDUAL LAYER CONDUCTING CURRENT WHEN THE CORRESPONDING PIEZOELECTRIC BODY IS CAUSED TO RESONATE, THE AMPLITUDE OF THE CURRENT BEING DEPENDENT ON THE AMOUNT OF LIGHT INCIDENT UPON SAID LAYER.
Claim 2
Dependent Claim
124 words
A FREQUENCY-SENSITIVE PHOTO-SENSITIVE DEVICE COMPRISING: (A) A BLOCK OF PIEZOELECTRIC MATERIAL, SAID BLOCK BEING DIVIDED BY A PLURALITY OF SLOTS FORMED THEREIN INTO A PLURALITY OF INDIVIDUAL PIEZOELECTRIC BODIES HAVING DIFFERENT RESONANT FREQUENCIES, SAID SLOT EXTENDING PARTIALLY INTO SAID BLOCK TO FORM INTERCONNECTING PIEZOELECTRIC BRIDGES CONNECTING ADJACENT PIEZOELECTRIC BODIES, (B) A PLURALITY OF PHOTOCONDUCTIVE LAYERS, EACH OF SAID LAYERS BEING CONNECTED IN PHYSICAL CONTACT WITH AND IN ELECTRICAL SERIES WITH ONE OF SAID INDIVIDUAL PIEZOELECTRIC BODIES, AND (C) MEANS FOR APPLYING A VOLTAGE ACROSS THE ELECTRICAL SERIES COMBINATIONS OF SAID BODIES AND SAID LAYERS, AN INDIVIDUAL LAYER CONDUCTING CURRENT WHEN THE CORRESPONDING PIEZOELECTRIC BODY IS CAUSED TO RESONATE, THE AMPLITUDE OF THE CURRENT BEING DEPENDENT ON THE AMOUNT OF LIGHT INCIDENT UPON SAID LAYER.
References Cited (Backward Citations)
US2649027A
Cited
US2816236A
Cited
US3040262A
Cited
US3056031A
Cited
US3145354A
Cited
US3154720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |