US3209190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-violet detector
Assignee: Electronics Corp of America
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Filing: 1962-07-27
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Granted: 1965-09-28
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Expires: 1982-07-27
Abstract
No abstract record available.
Inventors
- 👤 Phillip J Cade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:14
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
ULTRAVIOLET RADIATION SENSITIVE APPARATUS COMPRISING A GLASS ENVELOPE TRANSPARENT TO THE RADIATION OF INTEREST, TWO ELECTRODES OF PURE TUNGSTEN POSITIONED WITHIN SAID ENVELOPE, EACH ELECTRODE HAVING AN ACITVE PORTION DISPOSED IN SPACED REALTION TO A CORRESPONDING PORTION OF THE OTHER ELECTRODE, PURIFIED HYDROGEN GAS IN SAID ENVELOPE UNDER A PRESSURE IN THE ORDER OF ABOUT ONE HUNDRED MILLIMETERS OF MERCURY, AN IMPERVIOUS BARRIER LAYER OF SILICON DIOXIDE OVER THE ENTIRE INSIDE SURFACE OF SAID ENVELOPE BETWEEN SAID ENVELOPE AND SAID ELECTRODES, SAID BERRIER LAYER PREVENTING MIGRATION OF COMPONENTS OF THE ENVELOPE MATERIAL TO SAID HYDROGEN GAS AND SAID TUNGSTEN ELECTRODES, AND TERMINAL MEANS FOR CONNECTING SAID ELECTRODES TO A SIGNAL SOURCE TO CREATE AN ELECTRIC FIELD BETWEEN SAID AELECTRODES OF SUFFICIENT MAGNITUDE TO PRODUCE AN AVALANCHE BREAKDOWN BETWEEN SAID ELECTRODES WHEN SAID ELECTRODES ARE EXPOSED TO INCIDENT ULTRAVIOLET RADIATION.
Claim 2
Dependent Claim
139 words
ULTRAVIOLET RADIATION SENSITIVE APPARATUS COMPRISING A GLASS ENVELOPE TRANSPARENT TO THE RADIATION OF INTEREST, TWO ELECTRODES OF PURE TUNGSTEN POSITIONED WITHIN SAID ENVELOPE, EACH ELECTRODE HAVING AN ACITVE PORTION DISPOSED IN SPACED REALTION TO A CORRESPONDING PORTION OF THE OTHER ELECTRODE, PURIFIED HYDROGEN GAS IN SAID ENVELOPE UNDER A PRESSURE IN THE ORDER OF ABOUT ONE HUNDRED MILLIMETERS OF MERCURY, AN IMPERVIOUS BARRIER LAYER OF SILICON DIOXIDE OVER THE ENTIRE INSIDE SURFACE OF SAID ENVELOPE BETWEEN SAID ENVELOPE AND SAID ELECTRODES, SAID BERRIER LAYER PREVENTING MIGRATION OF COMPONENTS OF THE ENVELOPE MATERIAL TO SAID HYDROGEN GAS AND SAID TUNGSTEN ELECTRODES, AND TERMINAL MEANS FOR CONNECTING SAID ELECTRODES TO A SIGNAL SOURCE TO CREATE AN ELECTRIC FIELD BETWEEN SAID AELECTRODES OF SUFFICIENT MAGNITUDE TO PRODUCE AN AVALANCHE BREAKDOWN BETWEEN SAID ELECTRODES WHEN SAID ELECTRODES ARE EXPOSED TO INCIDENT ULTRAVIOLET 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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |