US2887630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor
Assignee: US Philips Corp
•
Filing: 1957-02-14
•
Granted: 1959-05-19
•
Expires: 1977-02-14
Abstract
No abstract record available.
Inventors
- 👤 Nijland Louis Marius
- 👤 Manintveld Jan Adrianus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:28
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/40; H10D; H10D99/00; H10P; H10P95/00; H10W72/00; Y; Y10; Y10S; Y10S438/00; Y10S438/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD OF MANUFACTURING A SEMI-CONDUCTIVE DEVICE COMPRISING A SEMI-CONDUCTIVE BODY AND PLURAL ELECTRODE CONNECTIONS TO SAID BODY AND POSSESSING A CURRENT AMPLIFICATION FACTOR WHOSE VALUE DEPENDS ON THE SURROUNDING ATMOSPHERE, COMPRISING THE STEPS OF ETCHING THE BODY, AND THEREAFTER INTRODUCING THE BODY WITH ITS ELECTRODE CONNECTIONS INTO AN ATMOSPHERE CONTAINING A NITROGENOXYGEN COMPOUND.
Claim 2
Independent Claim
54 words
A METHOD OF MANUFACTURING A SEMI-CONDUCTIVE DEVICE COMPRISING A SEMI-CONDUCTIVE BODY AND PLURAL ELECTRODE CONNECTIONS TO SAID BODY AND POSSESSING A CURRENT AMPLIFICATION FACTOR WHOSE VALUE DEPENDS ON THE SURROUNDING ATMOSPHERE, COMPRISING THE STEPS OF ETCHING THE BODY, AND THEREAFTER INTRODUCING THE BODY WITH ITS ELECTRODE CONNECTIONS INTO AN ATMOSPHERE CONTAINING A NITROGENOXYGEN COMPOUND.
References Cited (Backward Citations)
US2812480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |