US3284677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor with elongated base and collector current paths
Assignee: AMELCO Inc
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Filing: 1962-08-23
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Granted: 1966-11-08
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Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 Haas Isy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:36
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A TRANSISTOR INCLUDING A SUPPORT REGION OF ONE CONDUCTIVITY TYPE, A COLLECTOR REGION OF OPPOSITE CONDUCTIVITY TYPE HAVING ONE SURFACE FORMING A FIRST JUNCTION WITH ONE SURFACE OF SAID SUPPORT REGION, A BASE REGION OF SAID ONE CONDUCTIVITY TYPE INSET INTO THE COLLECTOR REGION FROM THE OTHER SURFACE TO FORM A COLLECTOR JUNCTION SUBSTANTIALLY PARALLEL TO SAID FIRST INSET INTO THE BASE REGION OF SAID ONE CONDUCTIVITY TYPE INSET INTO THE BASE REGION FROM SAID OTHER SURFACE TO FORM AN EMITTER JUNCTION THEREWITH, SAID EMITTER REGION BEING SUBSTANTIALLY SMALLER IN AREA THAN THE BASE REGION, OHMIC CONTACT FORMED WITH THE EMITTER REGION, OHMIC CONTACT FORMED WITH THE BASE REGION AT A PORTION OF THE BASE REGION SPACED FROM THE EMITTER REGION TO PROVIDE A BASE CURRENT PATH THROUGH THE BASE REGION TO THE EMITTER JUNCTION, A PAIR OF OHMIC CONTACTS BEING CLOSELY ADLECTOR JUNCTION, A PAIR OF OHMIC CONTACTS FORMED WITH THE COLLECTOR REGION, ONE OF SAID CONTACTS BEING CLOSELY CURRENT JACENT TO THE BASE CONTACT WHEREBY THE COLLECTOR CURRENT PATH IS SUBSTANTIALLY PARALLEL TO THE COLLECTOR JUNCTION AND THE BASE CURRENT PATH AND THE OTHER OHMIC CONTACT DISPOSED ON THE OTHER SIDE OF THE EMITTER REGION.
Claim 2
Dependent Claim
197 words
A TRANSISTOR INCLUDING A SUPPORT REGION OF ONE CONDUCTIVITY TYPE, A COLLECTOR REGION OF OPPOSITE CONDUCTIVITY TYPE HAVING ONE SURFACE FORMING A FIRST JUNCTION WITH ONE SURFACE OF SAID SUPPORT REGION, A BASE REGION OF SAID ONE CONDUCTIVITY TYPE INSET INTO THE COLLECTOR REGION FROM THE OTHER SURFACE TO FORM A COLLECTOR JUNCTION SUBSTANTIALLY PARALLEL TO SAID FIRST INSET INTO THE BASE REGION OF SAID ONE CONDUCTIVITY TYPE INSET INTO THE BASE REGION FROM SAID OTHER SURFACE TO FORM AN EMITTER JUNCTION THEREWITH, SAID EMITTER REGION BEING SUBSTANTIALLY SMALLER IN AREA THAN THE BASE REGION, OHMIC CONTACT FORMED WITH THE EMITTER REGION, OHMIC CONTACT FORMED WITH THE BASE REGION AT A PORTION OF THE BASE REGION SPACED FROM THE EMITTER REGION TO PROVIDE A BASE CURRENT PATH THROUGH THE BASE REGION TO THE EMITTER JUNCTION, A PAIR OF OHMIC CONTACTS BEING CLOSELY ADLECTOR JUNCTION, A PAIR OF OHMIC CONTACTS FORMED WITH THE COLLECTOR REGION, ONE OF SAID CONTACTS BEING CLOSELY CURRENT JACENT TO THE BASE CONTACT WHEREBY THE COLLECTOR CURRENT PATH IS SUBSTANTIALLY PARALLEL TO THE COLLECTOR JUNCTION AND THE BASE CURRENT PATH AND THE OTHER OHMIC CONTACT DISPOSED ON THE OTHER SIDE OF THE EMITTER REGION.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |