US3213312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet detector tube with a gas filling of hydrogen, helium and a noble gas
Assignee: BL DEVELOPMENT CORP A CORP OF DE
•
Filing: 1963-05-22
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Granted: 1965-10-19
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Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Robert W Crowe
- 👤 John B Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:57
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/16; H01J47/00; H01J47/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN ULTRAVIOLET DETECTOR TUBE COMPRISING A CLOSED GAS ENVELOPE OF RADIATION PERMEABLE MATERIAL, AN IONIZABLE GASEOUS FILLING IN SAID ENVELOPE, AND A PAIR OF ELECTRODES IN SAID ENVELOPE HAVING PORTIONS IN AN ADJACENT RELATIONSHIP FORMING A SINGLE INTEGRATED WORKING REGION WHEREIN THE EMISSION OF ELECTRONS RESPONSIVE TO INCIDENT ULTRAVIOLET RADIATION IS EFFECTIVE TO TRIGGER AN AVALANCHE DISCHARGE WHEN A STRIKING POTENTIAL IS APPLIED ACORSS SAID ELECTRODES, SAID GASEOUS FILLING BEING COMPOSED OF APAPROXIMATELY 148 MILLIMETERS HG OF HELIUM, 15 MILLIMETERS HG OF HYDROGEN AND A NOBLE GAS SELECTED FROM THE GROUP CONSISTING OF NEON, ARGON, KRYPTON AND ZENON, AND SAID SELECTED NOBLE GAS BEING IN THE AMOUNT OF 2 MILLIMETERS HG OF NEON, 1 MILLIMETER HG OF ARGON, 1/2 MILLIMETER HG OF KRYPTON OR 1/4 MILLLIMETER HG OF ZENON.
Claim 2
Dependent Claim
129 words
AN ULTRAVIOLET DETECTOR TUBE COMPRISING A CLOSED GAS ENVELOPE OF RADIATION PERMEABLE MATERIAL, AN IONIZABLE GASEOUS FILLING IN SAID ENVELOPE, AND A PAIR OF ELECTRODES IN SAID ENVELOPE HAVING PORTIONS IN AN ADJACENT RELATIONSHIP FORMING A SINGLE INTEGRATED WORKING REGION WHEREIN THE EMISSION OF ELECTRONS RESPONSIVE TO INCIDENT ULTRAVIOLET RADIATION IS EFFECTIVE TO TRIGGER AN AVALANCHE DISCHARGE WHEN A STRIKING POTENTIAL IS APPLIED ACORSS SAID ELECTRODES, SAID GASEOUS FILLING BEING COMPOSED OF APAPROXIMATELY 148 MILLIMETERS HG OF HELIUM, 15 MILLIMETERS HG OF HYDROGEN AND A NOBLE GAS SELECTED FROM THE GROUP CONSISTING OF NEON, ARGON, KRYPTON AND ZENON, AND SAID SELECTED NOBLE GAS BEING IN THE AMOUNT OF 2 MILLIMETERS HG OF NEON, 1 MILLIMETER HG OF ARGON, 1/2 MILLIMETER HG OF KRYPTON OR 1/4 MILLLIMETER HG OF ZENON.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |