US2954552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflecting surface and microwave absorptive layer
Assignee: Individual
•
Filing: 1946-02-01
•
Granted: 1960-09-27
•
Expires: 1966-02-01
Abstract
No abstract record available.
Inventors
- 👤 Halpern Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:03
CPC Classifications
H; H01; H01Q; H01Q17/00; H01Q17/002; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/26; Y10T428/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN COMBINATION WITH A NORMALLY REFLECTING SURFACE, A LAYER FOR MINIMIZING THE REFLECTION OF RADIO MICROWAVE RADIATION INCIDENT THEREON COMPRISING MYRIADS OF FINELYDIVIDED ELECTRICALLY CONDUCTIVE PARTICLES DISPERSED QUASIINSULATED IN AN ORGANIC BINDER, SAID PARTICLES HAVING A GREASE-TYPE LUBRICANT COATING FOR REDUCING THE SURFACE TENSION THEREOF, THE THICKNESS OF SAID LAYER BEING EQUAL TO AN ODD MULTIPLE OF ONE-QUARTER WAVE LENGTH OF THE INCIDENT RADIATION, MEASURED INSIDE THE LAYER.
Claim 2
Dependent Claim
68 words
IN COMBINATION WITH A NORMALLY REFLECTING SURFACE, A LAYER FOR MINIMIZING THE REFLECTION OF RADIO MICROWAVE RADIATION INCIDENT THEREON COMPRISING MYRIADS OF FINELYDIVIDED ELECTRICALLY CONDUCTIVE PARTICLES DISPERSED QUASIINSULATED IN AN ORGANIC BINDER, SAID PARTICLES HAVING A GREASE-TYPE LUBRICANT COATING FOR REDUCING THE SURFACE TENSION THEREOF, THE THICKNESS OF SAID LAYER BEING EQUAL TO AN ODD MULTIPLE OF ONE-QUARTER WAVE LENGTH OF THE INCIDENT RADIATION, MEASURED INSIDE THE LAYER.
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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |