US3390022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device and process for producing same
Assignee: Boeing North American Inc
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Filing: 1965-06-30
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Granted: 1968-06-25
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Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 Charles H Fa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:46
CPC Classifications
H; H10; H10W; H10W10/00; H10W10/01; H10W10/031; H10W10/30; Y; Y10; Y10S; Y10S148/00; Y10S148/035; Y10S148/043; Y10S148/053; Y10S148/085; Y10S148/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE COMPOSITE COMPRISING A CRYSTALLINE BODY OF A GIVEN CONDUCTIVITY TAPE HAVING TWO MAJOR SIDES, A LAYER OF DIELECTRIC MATERIAL ON A FIRST MAJOR SIDE, A CRYSTALLINE SUBSTRATE ON THE DIELECTRIC MATERIAL, AND SELECTED ZONES DIFFUESED FROM THE SECOND MAJOR SIDE OF SAID CRYSTALLINE BODY DOWN T SAID LAYER OF DIELECTRIC MATERIAL WITH IMPURITIES SELECTED TO PRODUCE IN SAID CRYSTALLINE BODY ZONES OF A CONDUCTIVITY TYPE OPPOSITE SAID GIVEN CONDUCTIVITY TYPE, THEREBY PROVIDING P-N JUNCTIONS EXTENDING FROM THE SURFACE OF SAID DIELECTRIC MATERIAL TO THE SURFACE OF SAID CRYSTALLINE BODY.
Claim 2
Dependent Claim
90 words
THE COMPOSITE COMPRISING A CRYSTALLINE BODY OF A GIVEN CONDUCTIVITY TAPE HAVING TWO MAJOR SIDES, A LAYER OF DIELECTRIC MATERIAL ON A FIRST MAJOR SIDE, A CRYSTALLINE SUBSTRATE ON THE DIELECTRIC MATERIAL, AND SELECTED ZONES DIFFUESED FROM THE SECOND MAJOR SIDE OF SAID CRYSTALLINE BODY DOWN T SAID LAYER OF DIELECTRIC MATERIAL WITH IMPURITIES SELECTED TO PRODUCE IN SAID CRYSTALLINE BODY ZONES OF A CONDUCTIVITY TYPE OPPOSITE SAID GIVEN CONDUCTIVITY TYPE, THEREBY PROVIDING P-N JUNCTIONS EXTENDING FROM THE SURFACE OF SAID DIELECTRIC MATERIAL TO THE SURFACE OF SAID CRYSTALLINE BODY.
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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |