Patent US3227933A successfully refreshed from Google Patents.
US3227933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diode and contact structure
Assignee: Fairchild Semiconductor Corp
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Filing: 1961-05-17
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Granted: 1966-01-04
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Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Lawrence F Punte
- 👤 Herbert V Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:45
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/20; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SEMICONDUCTOR CONTAINING AT LEAST TWO REGIONS OF DIFFERENT CONDUCTORS TYPES, ONE REGION BEING SUBSTANTIALLY SMALLER THAN THE OTHER, SAID SMALLER REGION AND SAID LARGER REGION BOTH EXTENDING TO A COMMON, PLANAR SURFACE AREA OF SAID BODY, A METAL BALL IN OHMIC CONTACT WITH SAID SMALLER REGION AT SAID SURFACE AREA BUT FREE FROM CONTACT WITH SAID LARGER REGION, A CURRENT WELD JOINING SAID BALL TO SAID SMALLER REGION OF THE SEMICONDUCTOR, AND AN ELECTRICAL CONNECTION TO SAID BALL.
Claim 2
Dependent Claim
85 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SEMICONDUCTOR CONTAINING AT LEAST TWO REGIONS OF DIFFERENT CONDUCTORS TYPES, ONE REGION BEING SUBSTANTIALLY SMALLER THAN THE OTHER, SAID SMALLER REGION AND SAID LARGER REGION BOTH EXTENDING TO A COMMON, PLANAR SURFACE AREA OF SAID BODY, A METAL BALL IN OHMIC CONTACT WITH SAID SMALLER REGION AT SAID SURFACE AREA BUT FREE FROM CONTACT WITH SAID LARGER REGION, A CURRENT WELD JOINING SAID BALL TO SAID SMALLER REGION OF THE SEMICONDUCTOR, AND AN ELECTRICAL CONNECTION TO SAID BALL.
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |