US3127513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrographite polarizer
Assignee: Raytheon Co
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Filing: 1961-01-30
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Granted: 1964-03-31
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Expires: 1981-01-30
Abstract
No abstract record available.
Inventors
- 👤 Rupprecht Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:20
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/21
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A POLARIZATION DEVICE FOR ELECTROMAGNETIC RADIATION FROM THE RADIO FREQUENCY TO AND INCLUDING THE INFRARED REGION COMPRISING A POLARIZATION ELEMENT OF PYROGRAPHITE ORIENTED SO THAT THE DIRECTION OF MINIMUM ATTENUATION OF THE ELECTRICAL FIELD VECTOR OF SAID ELECTROMAGNETIC RADIATION EXTENDS IN SAID ELEMENT IN A DIRECTION GENERALLY PERPENDICULAR TO THE DIRECTION OF PROPAGATION OF SAID RADIATION.
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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |