US2827599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor
Assignee: US Philips Corp
•
Filing: 1954-04-19
•
Granted: 1958-03-18
•
Expires: 1974-04-19
Abstract
No abstract record available.
Inventors
- 👤 Jochems Pieter Johan Wilhelmus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:31
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10W74/43; H10D; H10D99/00; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A TRANSISTOR COMPRISING A SEMI-CONDUCTIVE MEMBER OF ONE CONDUCTIVITY TYPE, A BASE OHMIC CONNECTION TO SAID MEMBER, A PAIR OF SPACED REGIONS IN SAID MEMBER OF THE OPPOSITE CONDUCTIVITY TYPE, AND EMITTER AND COLLECTOR TERMINAL CONNECTIONS TO SAID REGIONS, SAID MEMBER CONTAIN-
Claim 2
Dependent Claim
42 words
A TRANSISTOR COMPRISING A SEMI-CONDUCTIVE MEMBER OF ONE CONDUCTIVITY TYPE, A BASE OHMIC CONNECTION TO SAID MEMBER, A PAIR OF SPACED REGIONS IN SAID MEMBER OF THE OPPOSITE CONDUCTIVITY TYPE, AND EMITTER AND COLLECTOR TERMINAL CONNECTIONS TO SAID REGIONS, SAID MEMBER CONTAIN-
References Cited (Backward Citations)
US2666814A
Cited
US2629672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |