US3459967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor switching using a tunnel diode
Assignee: Philips North America LLC
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Filing: 1960-11-23
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Granted: 1969-08-05
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Expires: 1980-11-23
Abstract
No abstract record available.
Inventors
- 👤 Leonard Johan Tummers
- 👤 Adrianus Johannes Wil Overbeek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:41
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/58; H03K17/04; H03K17/041; H03K17/0412; H03K17/0414; H03K3/00; H03K3/02; H03K3/313; H03K3/315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
AN ELECTRICAL CIRCUIT COMPRISING: A TWO-TERMINAL DEVICE WHOSE VOLT-AMPERE CHARACTERISTIC HAS TWO REGIONS OF POSITIVE REISTANCE SEPARATED BY A REGION OF NEGATIVE RESISTANCE; AN OUTPUT TERMINAL; A TRANSISTOR CONNECTED IN THE COMMON BASE CONFIGURATION AND HAVING A COLLECTOR-EMITTER PATH CONNECTED BETWEEN SAID OUTPUT TERMINAL AND ONE
Claim 2
Dependent Claim
46 words
AN ELECTRICAL CIRCUIT COMPRISING: A TWO-TERMINAL DEVICE WHOSE VOLT-AMPERE CHARACTERISTIC HAS TWO REGIONS OF POSITIVE REISTANCE SEPARATED BY A REGION OF NEGATIVE RESISTANCE; AN OUTPUT TERMINAL; A TRANSISTOR CONNECTED IN THE COMMON BASE CONFIGURATION AND HAVING A COLLECTOR-EMITTER PATH CONNECTED BETWEEN SAID OUTPUT TERMINAL AND ONE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |