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US3773564A
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Lead titanate pyroelectric infra-red intensity detector
Assignee: Panasonic Holdings Corp
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Filing: 1972-03-17
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Granted: 1973-11-20
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Expires: 1992-03-17
Abstract
Abstract An infra-red intensity detector which comprises a polarized ceramic substrate composed of PbTiO3, MnO2 of from 0.8 to 1.2 mol percent of PbTiO3, and La2O3 of from 1.0 to 2.0 mol percent of Pb TiO3, and at least one couple of electrodes connected to the ceramic substrate and disposed in the direction of polarization of the substrate.
Inventors
- 👤 E Yamaka
- 👤 I Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:29
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/34; H; H10; H10N; H10N15/00; H10N15/10
Claims Analysis
Total Claims: 0
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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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |