US2887629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor
Assignee: US Philips Corp
•
Filing: 1957-02-13
•
Granted: 1959-05-19
•
Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 Nijland Louis Marius
- 👤 Manintveld Jan Adrianus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:11
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
67 words
A SEMI-CONDUCTIVE DEVICE COMPRISING AN ETCHED SEMICONDUCTIVE BODY WITH PLURAL ELECRTODE CONNECTIONS TO SAID BODY AND POSSESSING A CURRENT AMPLIFICATION FACTOR WHOSE VALUE DEPENDS ON THE SURROUNDING ATMOSPHERE, A SEALED ENVELOPE ENCLOSING THE BODY WITH ITS CONECTIONS, AND AN ATMOSPHERE IN SAID ENVELOPE COMPRISING WATER VAPOR AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF CHLORINE BROMINE, IODINE, AND HYDROGEN COMPOUNDS OF THE LATTER AND OF FLUORINE.
Claim 2
Dependent Claim
67 words
A SEMI-CONDUCTIVE DEVICE COMPRISING AN ETCHED SEMICONDUCTIVE BODY WITH PLURAL ELECRTODE CONNECTIONS TO SAID BODY AND POSSESSING A CURRENT AMPLIFICATION FACTOR WHOSE VALUE DEPENDS ON THE SURROUNDING ATMOSPHERE, A SEALED ENVELOPE ENCLOSING THE BODY WITH ITS CONECTIONS, AND AN ATMOSPHERE IN SAID ENVELOPE COMPRISING WATER VAPOR AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF CHLORINE BROMINE, IODINE, AND HYDROGEN COMPOUNDS OF THE LATTER AND OF FLUORINE.
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 |