Patent US2730765A successfully refreshed from Google Patents.
Patent US3006791A successfully refreshed from Google Patents.
US3006791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor devices
Assignee: RCA Corp
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Filing: 1959-08-24
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Granted: 1961-10-31
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Expires: 1979-08-24
Abstract
No abstract record available.
Inventors
- 👤 Jr William M Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:11
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/20; C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/401; C23C16/402; C30; C30B; C30B31/00; C30B31/06; C30B31/18; C30B31/185; H10D; H10D99/00; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6326; H10P14/6328; H10P14/66; H10P14/668; H10P14/6681; H10P14/6684; H10P14/6686; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10P32/00; H10P32/10; H10P32/14; H10P32/1404; H10P32/17; H10P32/171; H10P95/00; Y; Y10; Y10S; Y10S252/00; Y10S252/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A TRANSISTOR COMPRISING A LOW RESISTIVITY EMITTER REGION, AN ABRUPT EMITTER-BASE JUNCTION, A HIGH RESISTIVITY BASE REGION, A GRADUAL BASE-COLLECTOR JUNCTION, AND A CONTINUOUSLY GRADED LOW RESISTIVITY COLLECTOR REGION.
Claim 2
Dependent Claim
29 words
A TRANSISTOR COMPRISING A LOW RESISTIVITY EMITTER REGION, AN ABRUPT EMITTER-BASE JUNCTION, A HIGH RESISTIVITY BASE REGION, A GRADUAL BASE-COLLECTOR JUNCTION, AND A CONTINUOUSLY GRADED LOW RESISTIVITY COLLECTOR 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) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |