Patent US1603140A successfully refreshed from Google Patents.
Patent US4411492A successfully refreshed from Google Patents.
Patent US4864499A successfully refreshed from Google Patents.
Patent US3030165A successfully refreshed from Google Patents.
Patent US1933915A successfully refreshed from Google Patents.
Patent US3516496A successfully refreshed from Google Patents.
Patent US2719253A successfully refreshed from Google Patents.
US2719253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonlinear conduction elements
Assignee: Bradley Mining Co
•
Filing: 1953-02-11
•
Granted: 1955-09-27
•
Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 Robert K Willardson
- 👤 Albert C Beer
- 👤 Arthur E Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:10
CPC Classifications
H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S420/00; Y10S420/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A RECTIFIER COMPRISING A SEMICONDUCTOR AND AN ELECTRODE MAKING CONTACT WITH A SURFACE OF SAID SEMICONDUCTOR, SAID SEMICONDUCTOR CONSISTING PREDOMINANTLY OF THE MATERIAL FORMED BY REACTING 50 TOTAL ATOMIC PER CENT OF AT LEAST ONE ELEMENT OF GROUP 111 OF THE PERIODIC TABLE, INCLUDING AT LEAST 40 ATOMIC PER CENT ALUMINUM, 50 TOTAL ATOMIC PER CENT OF AT LEAST ONE ELEMENT OF GROUP V OF THE PERIODIC TABLE INCLUDING AT LEAST 40 ATOMIC PER CENT ANTIMONY, AND A SLIGHT ADDITIONAL AMOUNT OF AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE ELEMENTS OF GROUP 111 OF THE PERIODIC TABLE, AND THE ELEMENT MENTS OF GROUP V OF THE PERIODIC TABLE, ALL OF SAID ADDITIONAL AMOUNT OF ELEMENTS BEING SELECTED FROM THE SAME GROUP OF THE PERIODIC TABLE.
Claim 2
Dependent Claim
129 words
A RECTIFIER COMPRISING A SEMICONDUCTOR AND AN ELECTRODE MAKING CONTACT WITH A SURFACE OF SAID SEMICONDUCTOR, SAID SEMICONDUCTOR CONSISTING PREDOMINANTLY OF THE MATERIAL FORMED BY REACTING 50 TOTAL ATOMIC PER CENT OF AT LEAST ONE ELEMENT OF GROUP 111 OF THE PERIODIC TABLE, INCLUDING AT LEAST 40 ATOMIC PER CENT ALUMINUM, 50 TOTAL ATOMIC PER CENT OF AT LEAST ONE ELEMENT OF GROUP V OF THE PERIODIC TABLE INCLUDING AT LEAST 40 ATOMIC PER CENT ANTIMONY, AND A SLIGHT ADDITIONAL AMOUNT OF AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE ELEMENTS OF GROUP 111 OF THE PERIODIC TABLE, AND THE ELEMENT MENTS OF GROUP V OF THE PERIODIC TABLE, ALL OF SAID ADDITIONAL AMOUNT OF ELEMENTS BEING SELECTED FROM THE SAME GROUP OF THE PERIODIC TABLE.
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) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |