Patent US3566219A successfully refreshed from Google Patents.
US3566219A
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Pinched resistor semiconductor structure
Assignee: Signetics Corp
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Filing: 1969-01-16
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Granted: 1971-02-23
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Expires: 1989-01-16
Abstract
Abstract Pinched resistor semiconductor structure having a channel and a field plate to provide a depletion region which pinches off the channel so that the current flow remains constant for any voltage after a predetermined voltage is reached.
Inventors
- 👤 Carroll E Nelson
- 👤 Hans R Camenzind
- 👤 Albert P Youmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:22
CPC Classifications
H; H10; H10D; H10D1/00; H10D1/40; H10D1/43; H10D99/00; H10W; H10W10/00; H10W10/01; H10W10/011; H10W10/019; H10W10/10; Y; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S148/085
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
A structure as in claim 1 wherein said first named contact element includes a field plate which overlies and extends beyond said region of opposite conductivity.
Claim 2
Dependent Claim
26 words
A structure as in claim 2 wherein said last named layer of insulating material is disposed between the field plate and the region of opposite conductivity.
Claim 3
Dependent Claim
37 words
A semiconductor structure as in claim 1 wherein said portion of lesser depth is relatively long in proportion to the remainder of the island and has a depth which is relatively shallow in comparison to the length.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |