Patent US2271720A successfully refreshed from Google Patents.
Patent US3387226A successfully refreshed from Google Patents.
US3387226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser comprising a block of insulating material having a channel therein filled with a gas
Assignee: US Philips Corp
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Filing: 1963-07-15
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Granted: 1968-06-04
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Haisma Jan
- 👤 Sebastiaan Jacobus Van Hoppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:42
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A DEVICE FOR PRODUCING LIGHT BY STIMULATED EMISSION OF RADIATION IN A GAS COMPRISING A SOLID BLOCK OF INSULATING MATERIAL HAVING AT LEAST ONE NARROW CHANNEL THEREWITHIN EXTENDING THE LENGTH OF SAID BLOCK, SAID BLOCK HAVING A LONGITUDINAL DIMENSION THE MAXIMUM LENGTH OF WHICH IS ABOUT 10 TO 20 CM., LIGHT-REFLECTING MEMBERS EACH HAVING GROUND SURFACES FITTING WITH AND DIRECTLY ENGAGING THE ENDS OF THE BLOCK AND CONNECTED THEREWITH IN A VACUUMTIGHT MANNER THEREBY CLOSING THE ENDS OF SAID CHANNEL, ONE OF SAID REFLECTING MEMBERS BEING PARTIALLY TRANSPARENT, MEANS TO INTRODUCE A GASEOUS ACTIVE MEDIUM INTO SAID CHANNEL, AND MEANS TO EXCITE THE GASEOUS ACTIVE MEDIUM GAS IN SAID CHANNEL TO STIMULATE EMISSION THEREFROM.
Claim 2
Independent Claim
114 words
A DEVICE FOR PRODUCING LIGHT BY STIMULATED EMISSION OF RADIATION IN A GAS COMPRISING A SOLID BLOCK OF INSULATING MATERIAL HAVING AT LEAST ONE NARROW CHANNEL THEREWITHIN EXTENDING THE LENGTH OF SAID BLOCK, SAID BLOCK HAVING A LONGITUDINAL DIMENSION THE MAXIMUM LENGTH OF WHICH IS ABOUT 10 TO 20 CM., LIGHT-REFLECTING MEMBERS EACH HAVING GROUND SURFACES FITTING WITH AND DIRECTLY ENGAGING THE ENDS OF THE BLOCK AND CONNECTED THEREWITH IN A VACUUMTIGHT MANNER THEREBY CLOSING THE ENDS OF SAID CHANNEL, ONE OF SAID REFLECTING MEMBERS BEING PARTIALLY TRANSPARENT, MEANS TO INTRODUCE A GASEOUS ACTIVE MEDIUM INTO SAID CHANNEL, AND MEANS TO EXCITE THE GASEOUS ACTIVE MEDIUM GAS IN SAID CHANNEL TO STIMULATE EMISSION THEREFROM.
References Cited (Backward Citations)
BE608711A
Cited
US3149290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |