Patent US3150376A successfully refreshed from Google Patents.
US3150376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-band log periodic antenna
Assignee: HLINOIS FOUNDATION, University of
•
Filing: 1964-04-03
•
Granted: 1964-09-22
•
Expires: 1984-04-03
Abstract
No abstract record available.
Inventors
- 👤 Robert L Carrel
- 👤 Paul E Mayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:10
CPC Classifications
H; H01; H01Q; H01Q11/00; H01Q11/02; H01Q11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A BROADBAND UNIDIRECTIONAL ANTENNA COVERING AN INTERMITTENT RANGE OF FREQUENCIES COMPRISING AN ARRAY OF A PLURALITY OF SUBSTANTIALLY COPLANAR ELEMENTS, SAID ELEMENTS BEING ARRANGED IN A PLURALITY OF ZONES, THE ENDS OF THE ELEMENTS IN EACH OF SAID ZONES FALLING ON A PAIR OF CONVERGING LINES, THE LINES PASSING THROUGH THE ENDS OF THE ELEMENTS IN ANY ZONE BEING NON-COLLINEAR WITH AT LEAST ONE PAIR OF THE CORRESPONDING LINES ASSOCIATED WITH ANY OTHER
Claim 2
Dependent Claim
73 words
A BROADBAND UNIDIRECTIONAL ANTENNA COVERING AN INTERMITTENT RANGE OF FREQUENCIES COMPRISING AN ARRAY OF A PLURALITY OF SUBSTANTIALLY COPLANAR ELEMENTS, SAID ELEMENTS BEING ARRANGED IN A PLURALITY OF ZONES, THE ENDS OF THE ELEMENTS IN EACH OF SAID ZONES FALLING ON A PAIR OF CONVERGING LINES, THE LINES PASSING THROUGH THE ENDS OF THE ELEMENTS IN ANY ZONE BEING NON-COLLINEAR WITH AT LEAST ONE PAIR OF THE CORRESPONDING LINES ASSOCIATED WITH ANY OTHER
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |