Patent US4047174A successfully refreshed from Google Patents.
US4047174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing the radar cross-section of a dielectric body
Assignee: United States Department of the Army
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Filing: 1968-06-07
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Granted: 1977-09-06
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Expires: 1988-06-07
Abstract
Abstract An ablative coated missile nosecone or the like is coated with a thin resive coating, and then with a thin conductive coating. The conductive coating may be laid down in a predetermined pattern. These coatings allow the nosecone to have a radar cross-section the same as a metal cone of the same size, rather than the larger radar cross-section presented by the dielectric ablative nosecone. Alternately, the dielectric may have a conductive material interspersed therein, such as graphite.
Inventors
- 👤 Robert J. Wohlers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:51
CPC Classifications
H; H01; H01Q; H01Q17/00; H01Q17/001; H01Q15/00; H01Q15/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A method of reducing the radar cross-section of a dielectric covered nosecone, including the steps of: Coating said nosecone with an electrically resistive material, and Applying an electrically conductive material to said resistive coating in a predetermined pattern.
Claim 2
Independent Claim
38 words
A method of reducing the radar cross-section of a dielectric covered nosecone, including the steps of: Coating said nosecone with an electrically resistive material, and Applying an electrically conductive material to said resistive coating in a predetermined pattern.
References Cited (Backward Citations)
US2436578A
Cited
US2492358A
Cited
US3243313A
Cited
US3184742A
Cited
US3230531A
Cited
US3413636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |