US3097421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency energy absorbing material
Assignee: —
•
Filing: —
•
Granted: 1963-07-16
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Expires: 1980-07-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:35
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/24; H01P1/26; H01P1/264
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A LOSSY DEVICE FOR ABSORBING ELECTROMAGNETIC WAVE ENERGY IN THE HIGH FREQUENCY REGION CONSISTING ESSENTIALLY OF A 50-50 MIXTURE BY WEIGHT OF TUNGSTEN POWDER AND ALUMINUM OXIDE POWDER, THE MIXTURE BEING COMPACTED,
Claim 2
Dependent Claim
32 words
A LOSSY DEVICE FOR ABSORBING ELECTROMAGNETIC WAVE ENERGY IN THE HIGH FREQUENCY REGION CONSISTING ESSENTIALLY OF A 50-50 MIXTURE BY WEIGHT OF TUNGSTEN POWDER AND ALUMINUM OXIDE POWDER, THE MIXTURE BEING COMPACTED,
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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |