US3230540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spaced helical radiating conductor insulatingly supported along the length of central conductor support
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1962-06-06
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Granted: 1966-01-18
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Expires: 1982-06-06
Abstract
No abstract record available.
Inventors
- 👤 Endo Keiji
- 👤 Shibano Yoshizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:59
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A HELICAL ANTENNA OF CONTINUOUS SUPPORT TYPE WHICH IS CHARACTERIZED IN THAT A CONTINUOUS FLANGE OF INSULATING MATERIAL HAVING A CONDUCTOR BURIED IN IT ALONG ONE OF ITS EDGES, THE OTHER OF ITS EDGES FIXED IN A CONTINUOUS HELICAL FORM AROUND THE CIRCUMFERENCE OF A CIRCULAR SURFACE OF ELECTRO-CONDUCTIVE MATERIAL TO SUPPORT SAID CONDUCTOR AT A UNIFORM DEPTH FROM SAID CIRCULAR SURFACE.
Claim 2
Dependent Claim
62 words
A HELICAL ANTENNA OF CONTINUOUS SUPPORT TYPE WHICH IS CHARACTERIZED IN THAT A CONTINUOUS FLANGE OF INSULATING MATERIAL HAVING A CONDUCTOR BURIED IN IT ALONG ONE OF ITS EDGES, THE OTHER OF ITS EDGES FIXED IN A CONTINUOUS HELICAL FORM AROUND THE CIRCUMFERENCE OF A CIRCULAR SURFACE OF ELECTRO-CONDUCTIVE MATERIAL TO SUPPORT SAID CONDUCTOR AT A UNIFORM DEPTH FROM SAID CIRCULAR SURFACE.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |