Patent US3179899A successfully refreshed from Google Patents.
US3179899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical maser component
Assignee: AT&T Inc
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Filing: 1962-12-17
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Granted: 1965-04-20
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur G Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:16
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08004; H01S3/06; H01S3/0602; H01S3/0606
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN COMBINATION, AN OPTICAL CAVITY HAVING LIGHT RAY REFLECTIVE END MEMBERS FORMING THE BOUNDARIES THEREOF, A SOLID STATE NEGATIVE TEMPERATURE MEDIUM HAVING AN INDEX OF REFRACTION N1 INTERPOSED BETWEEN SAID MEMBERS AND DISPOSED ABOUT AN AXIS OF OPTICAL PROPAGATION THEREBETWEEN, OPPOSITE ENDS OF SAID MEDIUM BEING INCLINED AT THE BREWSTER ANGLE TO SAID AXIS, AND MEANS FOR COUPLING A LIGHT BEAM FROM SAID NEGATIVE TEMPERATURE MEDIUM INTO A MEDIUM OF SUBSTANTIALLY UNITY INDEX OF REFRACTION WITH AN AXIS OF PROPAGATION IN SAID LAST-RECITED MEDIUM WHICH IS PARALLEL TO SAID AXIS OF OPTICAL PROPAGATION SAID MEANS COMPRISING A HOMOGENOUS LIGHT BEAM REFRACTING MEDIUM HAVING AN INDEX OF REFRACTION N2 WHICH IS LESS THAN N1 POSITIONED WITHIN SAID CAVITY IN THE PATH OF THE LIGHT BEAM EMERGING FROM AT LEAST ONE OF SAID ENDS, EACH SURFACE OF SAID REFRACTING MEDIUM THROUGH WHICH LIGHT PASSES BEING DISPOSED AT THE BREWSTER ANGLE WITH RESPECT TO SAID AXIS OF OPTICAL PROPAGATION.
Claim 2
Dependent Claim
156 words
IN COMBINATION, AN OPTICAL CAVITY HAVING LIGHT RAY REFLECTIVE END MEMBERS FORMING THE BOUNDARIES THEREOF, A SOLID STATE NEGATIVE TEMPERATURE MEDIUM HAVING AN INDEX OF REFRACTION N1 INTERPOSED BETWEEN SAID MEMBERS AND DISPOSED ABOUT AN AXIS OF OPTICAL PROPAGATION THEREBETWEEN, OPPOSITE ENDS OF SAID MEDIUM BEING INCLINED AT THE BREWSTER ANGLE TO SAID AXIS, AND MEANS FOR COUPLING A LIGHT BEAM FROM SAID NEGATIVE TEMPERATURE MEDIUM INTO A MEDIUM OF SUBSTANTIALLY UNITY INDEX OF REFRACTION WITH AN AXIS OF PROPAGATION IN SAID LAST-RECITED MEDIUM WHICH IS PARALLEL TO SAID AXIS OF OPTICAL PROPAGATION SAID MEANS COMPRISING A HOMOGENOUS LIGHT BEAM REFRACTING MEDIUM HAVING AN INDEX OF REFRACTION N2 WHICH IS LESS THAN N1 POSITIONED WITHIN SAID CAVITY IN THE PATH OF THE LIGHT BEAM EMERGING FROM AT LEAST ONE OF SAID ENDS, EACH SURFACE OF SAID REFRACTING MEDIUM THROUGH WHICH LIGHT PASSES BEING DISPOSED AT THE BREWSTER ANGLE WITH RESPECT TO SAID AXIS OF OPTICAL PROPAGATION.
References Cited (Backward Citations)
US3034398A
Cited
US3057248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |