US3928865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-electrical transducer
Assignee: Panasonic Holdings Corp
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Filing: 1971-04-21
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Granted: 1975-12-23
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Expires: 1991-04-21
Abstract
Abstract A photo-electrical transducer element comprising a semiconductor body, a rectifying barrier formed in the semiconductor body, and electrodes formed on said semiconductor body on both sides of said barrier. A deep-level-forming impurity is heavily doped in the neighborhood of the rectifying barrier.
Inventors
- 👤 Akio Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:39
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F30/21; H10F30/22; H10F30/227; H10F99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PHOTOELECTRIC TRANSDUCER COMPRISING A SEMICONDUCTOR WAFER, A METAL LAYER ON THE SEMICONDUCTOR WAFER, THE SEMICONDUCTOR WAFER AND THE METAL LAYER FORMING A SCHOTTKY BARRIER THEREBETWEEN, AND A REGION IN THE NEIGHBORHOOD OF THE SCHOTTKY BARRIER HEAVILY DOPED WITH A DEEP-LEVEL IMPURITY SELECTED FROM THE GROUP CONSISTING OF COPPER, GOLD, IRON, NICKEL AND MANGANESE.
Claim 2
Dependent Claim
54 words
A PHOTOELECTRIC TRANSDUCER COMPRISING A SEMICONDUCTOR WAFER, A METAL LAYER ON THE SEMICONDUCTOR WAFER, THE SEMICONDUCTOR WAFER AND THE METAL LAYER FORMING A SCHOTTKY BARRIER THEREBETWEEN, AND A REGION IN THE NEIGHBORHOOD OF THE SCHOTTKY BARRIER HEAVILY DOPED WITH A DEEP-LEVEL IMPURITY SELECTED FROM THE GROUP CONSISTING OF COPPER, GOLD, IRON, NICKEL AND MANGANESE.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |