US2854612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon power rectifier
Assignee: TDK Micronas GmbH
•
Filing: 1956-07-06
•
Granted: 1958-09-30
•
Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Zaratkiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/80; H10D62/83; H10D62/834; H10D62/10; H10D8/00; H10D99/00; H10P; H10P95/00; H10P95/50; H10W; H10W72/00; H10W76/00; H10W76/10; H10W76/17; H10W76/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A SILICON POWER RECTIFIER COMPRISING A BASE PLATE OF MOLYBDENUM, A BODY OF SEMICONDUCTIVE SILICON HAVING A FACE THEREOF ADJACENT SAID BASE PLATE, A LAYER OF A MATERIAL CONSISTING PREDOMINANTLY OF GOLD DISPOSED BETWEEN SAID SILICON FACE AND SAID MOLYBDENUM AND IN INTIMATE CONTACT THEREWITH, AND A LAYER OF A JUNCTION-FORMING SIGNIFICANTLY IMPURITY MATERIAL IN INTIMATE CONTACT WITH AN OPPOSITE FACE OF SAID SILICON.
Claim 2
Dependent Claim
64 words
A SILICON POWER RECTIFIER COMPRISING A BASE PLATE OF MOLYBDENUM, A BODY OF SEMICONDUCTIVE SILICON HAVING A FACE THEREOF ADJACENT SAID BASE PLATE, A LAYER OF A MATERIAL CONSISTING PREDOMINANTLY OF GOLD DISPOSED BETWEEN SAID SILICON FACE AND SAID MOLYBDENUM AND IN INTIMATE CONTACT THEREWITH, AND A LAYER OF A JUNCTION-FORMING SIGNIFICANTLY IMPURITY MATERIAL IN INTIMATE CONTACT WITH AN OPPOSITE FACE OF SAID SILICON.
References Cited (Backward Citations)
US2441603A
Cited
US2736847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |