Patent US3225351A successfully refreshed from Google Patents.
US3225351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertically polarized microstrip antenna for glide path system
Assignee: Individual
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Filing: 1962-03-09
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Granted: 1965-12-21
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Maurice G Chatelain
- 👤 Aasted Jorgen
- 👤 Bensimon Jean-Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:30
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/20; H01Q13/26; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A VERTICALLY POLARIZED GLIDE PATH ANTENNA, COMPRISING: AN ELONGATED, CONDUCTIVE GROUND PLANE; AN ELONGATED, CONDUCTIVE, DRIVEN MICROSTRIP ELEMENT VERTICALLY SPACED FROM SAID GROUND PLANE, WHEREBY RADIO FREQUENCY ENERGY MAY BE TRANSMITTED LONGITUDINALLY THERETHROUGH: A PAIR OF ENDFIRE ARRAYS OF LONGITUDINALLY SPACED RADIATOR ELEMENTS SPACED ON OPPOSITE SIDES OF SAID MICROSTRIP ELEMENT; SAID RADIATOR ELEMENTS CAUSING PERIODIC DISTURBANCES IN THE PASSAGE OF RADIO FREQUENCY ENERGY TO PRODUCE A VERTICALLY POLARIZED ENDFIRE RADIATION FROM THE ANTENNA.
Claim 2
Dependent Claim
74 words
A VERTICALLY POLARIZED GLIDE PATH ANTENNA, COMPRISING: AN ELONGATED, CONDUCTIVE GROUND PLANE; AN ELONGATED, CONDUCTIVE, DRIVEN MICROSTRIP ELEMENT VERTICALLY SPACED FROM SAID GROUND PLANE, WHEREBY RADIO FREQUENCY ENERGY MAY BE TRANSMITTED LONGITUDINALLY THERETHROUGH: A PAIR OF ENDFIRE ARRAYS OF LONGITUDINALLY SPACED RADIATOR ELEMENTS SPACED ON OPPOSITE SIDES OF SAID MICROSTRIP ELEMENT; SAID RADIATOR ELEMENTS CAUSING PERIODIC DISTURBANCES IN THE PASSAGE OF RADIO FREQUENCY ENERGY TO PRODUCE A VERTICALLY POLARIZED ENDFIRE RADIATION FROM THE ANTENNA.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |