Patent US3317786A successfully refreshed from Google Patents.
US3317786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light source emitting a continuous spectrum in the extreme ultra-violet range
Assignee: Centre National de la Recherche Scientifique
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Filing: 1962-04-23
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Granted: 1967-05-02
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Expires: 1982-04-23
Abstract
No abstract record available.
Inventors
- 👤 Romand Jacques
- 👤 Vodar Boris
- 👤 Balloffet Germaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:10
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/10; H; H01; H01J; H01J17/00; H01J35/00; H01J35/22; H01J37/00; H01J37/32; H01J7/00; H01J7/44; H01T; H01T1/00; H01J2893/00; H01J2893/0059
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A LIGHT SOURCE FOR SPECTRAL ANALYSIS, CAPABLE OF EMITTING A CONTINUOUS SPECTRUM RANGING FROM VISIBLE LIGHT WAVELENGTHS TO THE SHORTEST EXTREME ULTRA-VIOLET WAVELENGTHS, THIS SOURCE COMPRISING, IN COMBINATION, MEANS FORMING A HIGH VACUUM CHAMBER, A MAIN ANODE AND A CATHODE LOCATED IN SAID CHAMBER AT A DISTANCE FROM EACH OTHER, AN AUXILIARY ANODE MOUNTED IN SAID CHAMBER IN PROXIMITY OF SAID CATHODE, ELECTRIC MEANS FOR PRODUCING A STARTING SPARK BETWEEN SAID AUXILIARY ANODE AND SAID CATHODE AND AN ELECTRIC CIRCUIT, COMPRISING A CAPACITOR HAVING ITS CONDUCTING SURFACES CONNECTED WITH SAID MAIN ANODE AND SAID CATHODE RESPECTIVELY, FOR PRODUCING A SPARK BETWEEN SAID TWO LAST MENTIONED ELECTRODES, SAID ELECTRIC CIRCUIT HAVING AN INDUCTANCE LOWER THAN 0.1 MICROHENRY AND THE INDUCTANCE TO CAPACITY RATIO OF SAID CIRCUIT BEING LOWER THAN 0.2 HENRY/FARAD SO AS TO GIVE OFF IN THE SPARK AN AMOUNT OF ENERGY PER UNIT OF VOLUME SUFFICIENTLY GREAT TO PRODUCE A CONTINUOUS SPECTRUM ON THE ANODE OR IN THE VICINITY THEREOF.
Claim 2
Dependent Claim
161 words
A LIGHT SOURCE FOR SPECTRAL ANALYSIS, CAPABLE OF EMITTING A CONTINUOUS SPECTRUM RANGING FROM VISIBLE LIGHT WAVELENGTHS TO THE SHORTEST EXTREME ULTRA-VIOLET WAVELENGTHS, THIS SOURCE COMPRISING, IN COMBINATION, MEANS FORMING A HIGH VACUUM CHAMBER, A MAIN ANODE AND A CATHODE LOCATED IN SAID CHAMBER AT A DISTANCE FROM EACH OTHER, AN AUXILIARY ANODE MOUNTED IN SAID CHAMBER IN PROXIMITY OF SAID CATHODE, ELECTRIC MEANS FOR PRODUCING A STARTING SPARK BETWEEN SAID AUXILIARY ANODE AND SAID CATHODE AND AN ELECTRIC CIRCUIT, COMPRISING A CAPACITOR HAVING ITS CONDUCTING SURFACES CONNECTED WITH SAID MAIN ANODE AND SAID CATHODE RESPECTIVELY, FOR PRODUCING A SPARK BETWEEN SAID TWO LAST MENTIONED ELECTRODES, SAID ELECTRIC CIRCUIT HAVING AN INDUCTANCE LOWER THAN 0.1 MICROHENRY AND THE INDUCTANCE TO CAPACITY RATIO OF SAID CIRCUIT BEING LOWER THAN 0.2 HENRY/FARAD SO AS TO GIVE OFF IN THE SPARK AN AMOUNT OF ENERGY PER UNIT OF VOLUME SUFFICIENTLY GREAT TO PRODUCE A CONTINUOUS SPECTRUM ON THE ANODE OR IN THE VICINITY THEREOF.
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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |