US2732519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freedman
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:18
CPC Classifications
H; H04; H04R; H04R23/00; H04R23/006; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/938
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A TRANSISTOR ASSEMBLY COMPRISING AN N-TYPE SINGLE CRYSTAL SEMICONDUCTOR BODY COMPOSED OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF GERMANIUM AND SILICON AND A TRACE OF AN N-TYPE IMPURITY ELEMENT SELECTED FROM THE FIFTH PERIODIC GROUP, MEANS FOR APPLYING AND MAINTAINING A STRESS ON A SECTION OF SAID BODY TO CHANGE SAID SECTION THE P-TYPE STATE AND TO RETAIN SAID SECTION IN SAID STATE, AND LEADS CONNECTED TO SAID SECTION AND SAID BODY.
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) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |