US3211972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor networks
Assignee: Texas Instruments Inc
•
Filing: 1964-06-24
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Granted: 1965-10-12
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Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Jack S Kilby
- 👤 Jay W Lathrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:28
CPC Classifications
H; H10; H10D; H10D99/00; H10D84/00; H10D84/01; H10D84/0112; H10D84/0123; H10D84/0126; H10D84/0158; H10D84/02; H10D84/03; H10D84/038; H10D84/40; H10D84/401; H10D84/403; H10D84/406; H10D84/60; H10D84/611; H10D84/613; H10D84/615; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
AN INTEGRATED CIRCUIT COMPRISING A MONOCRYSTALLINE SEMICONDUCTOR SUBSTRATE, A LAYER OF EPITAXIAL SEMICONDUCTOR MATERIAL OVERLYING AT LEAST A PORTION OF ONE FACE OF THE SUBSTRATE, A CIRCUIT COMPONENT DEFINED IN A PART OF THE EPITAXIAL LAYER BY THIN, LIMITED AREA, SURFACE-ADJACENT REGIONS OF ALTERNATE CONDUCTIVITY TYPE, AND MEANS FOR MAKING LOW RESISTANCE ELECTRICAL CONNECTION TO A PORTION OF THE EPITAXIAL LAYER WHICH UNDERLIES SAID REGIONS, SAID MEANS COMPRISING A HEAVILY DOPED LAYER OF THE SEMICONDUCTOR MATERIAL INTERPOSED BETWEEN THE EPITAXIAL LAYER AND THE SUBSTRATE, AND A CONTACT ON THE TOP SURFACE OF THE EPITAXIAL LAYER ABOVE A PART OF THE HEAVILY DOPED LAYER.
Claim 2
Dependent Claim
103 words
AN INTEGRATED CIRCUIT COMPRISING A MONOCRYSTALLINE SEMICONDUCTOR SUBSTRATE, A LAYER OF EPITAXIAL SEMICONDUCTOR MATERIAL OVERLYING AT LEAST A PORTION OF ONE FACE OF THE SUBSTRATE, A CIRCUIT COMPONENT DEFINED IN A PART OF THE EPITAXIAL LAYER BY THIN, LIMITED AREA, SURFACE-ADJACENT REGIONS OF ALTERNATE CONDUCTIVITY TYPE, AND MEANS FOR MAKING LOW RESISTANCE ELECTRICAL CONNECTION TO A PORTION OF THE EPITAXIAL LAYER WHICH UNDERLIES SAID REGIONS, SAID MEANS COMPRISING A HEAVILY DOPED LAYER OF THE SEMICONDUCTOR MATERIAL INTERPOSED BETWEEN THE EPITAXIAL LAYER AND THE SUBSTRATE, AND A CONTACT ON THE TOP SURFACE OF THE EPITAXIAL LAYER ABOVE A PART OF THE HEAVILY DOPED LAYER.
References Cited (Backward Citations)
US3089794A
Cited
US3149395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |