US2796563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductive devices
Assignee: AT&T Inc
•
Filing: 1955-06-10
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Granted: 1957-06-18
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Expires: 1975-06-10
Abstract
No abstract record available.
Inventors
- 👤 Jewell J Ebers
- 👤 Joseph J Kleimack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:05
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/161; H10P; H10P95/00; H10W72/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A SEMICONDUCTIVE DEVICE COMPRISING A WATER-SHAPED SEMICONDUCTIVE BODY PRINCIPALLY OF P CONDUCTIVITY TYPE, A PLANE SURFACE ON ONE FACE OF SAID WATER, A METALLIC MASS ALLOYED TO SAID SURFACE, A REGION IN SAID WATER ADJACENT SAID MASS OF N CONDUCTIVITY TYPE, A METALLLIC SHEET MEMBER OF MATERIAL HAVING A COEFFICIENT OF EXPANSION OF ABOUT THE SAME VALUE AS THAT OF THE SEMICONDUCTIVE BODY, SAID MEMBER HAVING AN APERTURE CORRESPONDING IN SHAPE TO SAID REGION AND OF GREATER EXTENT THAN THE AREA OF SAID REGION
Claim 2
Dependent Claim
84 words
A SEMICONDUCTIVE DEVICE COMPRISING A WATER-SHAPED SEMICONDUCTIVE BODY PRINCIPALLY OF P CONDUCTIVITY TYPE, A PLANE SURFACE ON ONE FACE OF SAID WATER, A METALLIC MASS ALLOYED TO SAID SURFACE, A REGION IN SAID WATER ADJACENT SAID MASS OF N CONDUCTIVITY TYPE, A METALLLIC SHEET MEMBER OF MATERIAL HAVING A COEFFICIENT OF EXPANSION OF ABOUT THE SAME VALUE AS THAT OF THE SEMICONDUCTIVE BODY, SAID MEMBER HAVING AN APERTURE CORRESPONDING IN SHAPE TO SAID REGION AND OF GREATER EXTENT THAN THE AREA OF SAID REGION
References Cited (Backward Citations)
US2665399A
Cited
US2644852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |