Patent US3307187A successfully refreshed from Google Patents.
US3307187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Omniazimuthal reflectors
Assignee: Armstrong World Industries Inc
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Filing: 1966-03-11
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Granted: 1967-02-28
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 Robert L Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:28
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A RADIO FREQUENCY LENS REFLECTOR COMPRISING A SUBSTANTIALLY CYLINDRICAL MASS OF DIELECTRIC MATERIAL EXHIBITING A DIELECTRIC GRADIENT IN RADIAL DIRECTIONS, AND CURVED REFLECTOR STRIP MEANS EXTENDING ALONG THE OUTER PERIPHERAL SURFACE OF SAID CYLINDRICAL MASS IN DIRECTIONS CONCENTRIC WITH THE CENTRAL AXIS OF SAID CYLINDRICAL MASS, SAID REFLECTOR STRIP MEANS HAVING A DIMENSION IN DIRECTIONS PARALLEL TO THE AXIS OF SAID CYLINDRICAL MASS COMPRISING A FRACTION OF THE AXIAL DISTANCE BETWEEN THE UPPERMOST AND LOWERMOST FACES OF SAID CYLINDRICAL MASS, SAID REFLECTOR STRIP MEANS INCLUDING ARCUATE SECTIONS DISPOSED AT DIFFERENT AXIAL LEVELS RELATIVE TO THE AXIS OF SAID CYLINDRICAL MASS.
Claim 2
Dependent Claim
100 words
A RADIO FREQUENCY LENS REFLECTOR COMPRISING A SUBSTANTIALLY CYLINDRICAL MASS OF DIELECTRIC MATERIAL EXHIBITING A DIELECTRIC GRADIENT IN RADIAL DIRECTIONS, AND CURVED REFLECTOR STRIP MEANS EXTENDING ALONG THE OUTER PERIPHERAL SURFACE OF SAID CYLINDRICAL MASS IN DIRECTIONS CONCENTRIC WITH THE CENTRAL AXIS OF SAID CYLINDRICAL MASS, SAID REFLECTOR STRIP MEANS HAVING A DIMENSION IN DIRECTIONS PARALLEL TO THE AXIS OF SAID CYLINDRICAL MASS COMPRISING A FRACTION OF THE AXIAL DISTANCE BETWEEN THE UPPERMOST AND LOWERMOST FACES OF SAID CYLINDRICAL MASS, SAID REFLECTOR STRIP MEANS INCLUDING ARCUATE SECTIONS DISPOSED AT DIFFERENT AXIAL LEVELS RELATIVE TO THE AXIS OF SAID CYLINDRICAL MASS.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |