US3287612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor contacts and protective coatings for planar devices
Assignee: AT&T Inc
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Filing: 1963-12-17
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Granted: 1966-11-22
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Expires: 1983-12-17
Abstract
No abstract record available.
Inventors
- 👤 Martin P Lepselter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:28
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H01; H01J; H01J37/00; H01J37/32; H01J37/34; H10D; H10D84/00; H10D84/60; H10D84/611; H10D84/613; H10D84/615; H10D99/00; H10P; H10P90/00; H10P90/19; H10P90/1904; H10P90/1906; H10P95/00; H10W10/00; H10W10/01; H10W10/021; H10W10/061; H10W10/10; H10W10/181; H10W10/20; H10W20/41; H10W20/425; H10W20/44; H10W20/4403; H10W20/4432; C; C10; C10M; C10M2201/00; C10M2201/02; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10N; C10N2040/00; C10N2040/20; C10N2040/22; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12396; Y10T428/12493; Y10T428/12528; Y10T428/12535; Y10T428/12583; Y10T428/1259; Y10T428/12674; Y10T428/12771; Y10T428/12806; Y10T428/12861; Y10T428/12875
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SILICON OF ONE CONDUCTIVITY TYPE HAVING A MAJOR PLANE SURFACE, A ZONE OF OPPOSING CONDUCTIVITY TYPE ADJOINING A PORTION OF SAID SURFACE, SAID ZONE BEING DEFINED BY A PN JUNCTION WHOSE EDGE INTERSECTS SAID SURFACE, A LAYER OF SILICON EXIDE ON SAID MAJOR SURFACE AND OVERLYING SAID PN JUNCTION EDGE, SAID OXIDE LAYER HAVING AN OPENING THERETHROUGH TO EXPOSE A PORTION OF THE SURFACE OF SAID ZONE, A LAYER OF TITANIUM IN CONTACT WITH THE EXPOSED SURFACE WITHIN SAID OPENING AND OVERLYING THE ADJACENT PORTION OF
Claim 2
Dependent Claim
93 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SILICON OF ONE CONDUCTIVITY TYPE HAVING A MAJOR PLANE SURFACE, A ZONE OF OPPOSING CONDUCTIVITY TYPE ADJOINING A PORTION OF SAID SURFACE, SAID ZONE BEING DEFINED BY A PN JUNCTION WHOSE EDGE INTERSECTS SAID SURFACE, A LAYER OF SILICON EXIDE ON SAID MAJOR SURFACE AND OVERLYING SAID PN JUNCTION EDGE, SAID OXIDE LAYER HAVING AN OPENING THERETHROUGH TO EXPOSE A PORTION OF THE SURFACE OF SAID ZONE, A LAYER OF TITANIUM IN CONTACT WITH THE EXPOSED SURFACE WITHIN SAID OPENING AND OVERLYING THE ADJACENT PORTION OF
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |