US2996709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible electromagnetic radiationabsorptive article
Assignee: EIDP Inc
•
Filing: 1945-04-27
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Granted: 1961-08-15
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Expires: 1965-04-27
Abstract
No abstract record available.
Inventors
- 👤 Pratt Burt Carlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:52
CPC Classifications
H; H01; H01Q; H01Q17/00; H01Q17/002; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413; Y10T428/26; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A FLEXIBLE ARTICLE OF MANUFACTURE CAPABLE OF ABSORBING ELECTROMAGNETIC RADIATIONS HAVING A FREQUENCY IN THE RANGE OF FROM 10**6 TO 10**11 CYCLES PER SECOND, SAID ARTICLE COMPRISING A METAL FOIL COATED WITH A FILM OF POLYMER HAVING A DIELECTRIC CONSTANT LESS THAN 3.5 AT 1000 KILOCYCLES AND CONSISTING PREDOMINANTLY OF A POLYMERIZED MONOOLEFINIC ALIPHATIC HYDROCARBON CONTAINING FROM 2 TO 4 CARBON ATOMS, SAID FILM HAVING A THICKNESS OF AT LEAST 10 MILS AND CONTAINING THIN METAL FLAKES WHICH ARE AT LEAST PARTIALLY ORIENTED WITH RESPECT TO THE PLANE OF THE FILM, SAID FLAKES BEING PRESENT IN AN AMOUNT OF AT LEAST 25% OF THE WEIGHT OF SAID FILM BUT BELOW THAT AT WHICH A FILM OF SAID POLYMER AND SAID FLAKE HAS INSUFFICIENT STRENGTH TO BE SELF-SUPPORTING.
Claim 2
Dependent Claim
127 words
A FLEXIBLE ARTICLE OF MANUFACTURE CAPABLE OF ABSORBING ELECTROMAGNETIC RADIATIONS HAVING A FREQUENCY IN THE RANGE OF FROM 10**6 TO 10**11 CYCLES PER SECOND, SAID ARTICLE COMPRISING A METAL FOIL COATED WITH A FILM OF POLYMER HAVING A DIELECTRIC CONSTANT LESS THAN 3.5 AT 1000 KILOCYCLES AND CONSISTING PREDOMINANTLY OF A POLYMERIZED MONOOLEFINIC ALIPHATIC HYDROCARBON CONTAINING FROM 2 TO 4 CARBON ATOMS, SAID FILM HAVING A THICKNESS OF AT LEAST 10 MILS AND CONTAINING THIN METAL FLAKES WHICH ARE AT LEAST PARTIALLY ORIENTED WITH RESPECT TO THE PLANE OF THE FILM, SAID FLAKES BEING PRESENT IN AN AMOUNT OF AT LEAST 25% OF THE WEIGHT OF SAID FILM BUT BELOW THAT AT WHICH A FILM OF SAID POLYMER AND SAID FLAKE HAS INSUFFICIENT STRENGTH TO BE SELF-SUPPORTING.
References Cited (Backward Citations)
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US2199526A
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US2162204A
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US2287053A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |