US2860218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Germanium current controlling devices
Assignee: General Electric Co
•
Filing: 1954-02-04
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Granted: 1958-11-11
•
Expires: 1974-02-04
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Dunlap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:22
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/246; H; H01; H01C; H01C7/00; H01C7/04; H10; H10D; H10D99/00; H10F; H10F99/00; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/8556; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/062; Y10S438/00; Y10S438/914; Y10S438/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN ELECTRIC CURRENT CONTROL DEVICE COMPRISING A HIGH PURITY GERMANIUM CRYSTALLINE BODY HAVING PER CUBIC CENTIMETER THEREIN 1013 TO 1015 ATOMS OF GOLD, LESS THAN 108 ATOMS OF ACCEPTOR ACTIVATOR ELEMENTS OTHER THAN GOLD AND LESS THAN 1015 ATOMS OF DONOR ACTIVATOR ELEMENTS, AND A PAIR OF ELECTRICAL CONNECTIONS TO SPACED REGIONS OF SAID BODY.
Claim 2
Dependent Claim
55 words
AN ELECTRIC CURRENT CONTROL DEVICE COMPRISING A HIGH PURITY GERMANIUM CRYSTALLINE BODY HAVING PER CUBIC CENTIMETER THEREIN 1013 TO 1015 ATOMS OF GOLD, LESS THAN 108 ATOMS OF ACCEPTOR ACTIVATOR ELEMENTS OTHER THAN GOLD AND LESS THAN 1015 ATOMS OF DONOR ACTIVATOR ELEMENTS, AND A PAIR OF ELECTRICAL CONNECTIONS TO SPACED REGIONS OF SAID BODY.
References Cited (Backward Citations)
US2189122A
Cited
US2514879A
Cited
US2600997A
Cited
US2504628A
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US2672528A
Cited
US2597028A
Cited
US2561411A
Cited
US2547173A
Cited
US2671154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |