Patent US3417398A successfully refreshed from Google Patents.
US3417398A
Expired / Lapsed
US
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Modulated retrodirective corner reflector
Assignee: Radiation Inc
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Filing: 1966-04-12
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Granted: 1968-12-17
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Expires: 1986-04-12
Abstract
No abstract record available.
Inventors
- 👤 Bernard L Lewis
- 👤 Pietsch Le Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:59
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/145; G; G01; G01S; G01S13/00; G01S13/74; G01S13/75; G01S13/751; G01S13/756; G02; G02B; G02B26/00; G02B26/06; G02B5/00; G02B5/12; G02B5/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A RETRODIRECTIVE CORNER REFLECTOR FOR MODULATING HIGH FREQUENCY R-F WAVES REFLECTED THEREFROM, SAID CORNER REFLECTOR COMPRISING A POLYHEDRON COMPOSED OF DIELECTRIC MATERIAL HAVING A PRESELECTED DIELECTRIC CONSTANT GREATER THAN THAT OF THE SURROUNDING MEDIUM IN WHICH SAID REFLECTOR IS TO BE USED, SAID POLYHEDRON HAVING A PLURALITY OF INTERSECTING FACES FORMING THE CORNER FROM WHICH INCIDENT R-F WAVES ARE TO BE REFLECTED INTERIORLY OF SAID DIELECTRIC MATERIAL, AND AN ENCLOSED GASEOUS IONIZABLE MEDIUM DISPOSED ADJACENT AT LEAST ONE OF SAID INTERSECTING FACES AND AN OPPOSING RELATION THERETO.
Claim 2
Dependent Claim
87 words
A RETRODIRECTIVE CORNER REFLECTOR FOR MODULATING HIGH FREQUENCY R-F WAVES REFLECTED THEREFROM, SAID CORNER REFLECTOR COMPRISING A POLYHEDRON COMPOSED OF DIELECTRIC MATERIAL HAVING A PRESELECTED DIELECTRIC CONSTANT GREATER THAN THAT OF THE SURROUNDING MEDIUM IN WHICH SAID REFLECTOR IS TO BE USED, SAID POLYHEDRON HAVING A PLURALITY OF INTERSECTING FACES FORMING THE CORNER FROM WHICH INCIDENT R-F WAVES ARE TO BE REFLECTED INTERIORLY OF SAID DIELECTRIC MATERIAL, AND AN ENCLOSED GASEOUS IONIZABLE MEDIUM DISPOSED ADJACENT AT LEAST ONE OF SAID INTERSECTING FACES AND AN OPPOSING RELATION THERETO.
References Cited (Backward Citations)
US2543130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |