US3409482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a transistor with a very thin diffused base and an epitaxially grown emitter
Assignee: Sprague Electric Co
•
Filing: 1964-12-30
•
Granted: 1968-11-05
•
Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Lindmayer Joseph
- 👤 Richard R Garnache
- 👤 James J Casey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:33
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10D; H10D99/00; H10P; H10P95/00; H10W72/00; H10W72/071; H10W72/075; H10W72/07551; H10W72/07554; H10W72/50; H10W72/531; H10W72/536
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3064167A
Cited
US3040219A
Cited
US3057762A
Cited
US3000768A
Cited
US3047438A
Cited
US3089794A
Cited
US3149395A
Cited
US3152928A
Cited
US3321340A
Cited
US3156591A
Cited
US3243323A
Cited
US3312881A
Cited
US3278347A
Cited
US3309240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |