US3309524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen detector using hydrogen permeable membrane with feedbacks
Assignee: Prengle Dukler and Crump Inc
•
Filing: 1963-03-18
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Granted: 1967-03-14
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Clark D Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:31
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/66; G01N21/69
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A HYDROGEN DETECTOR COMPRISING: TUBE MEANS HAVING A CAPILLARY PORTION FOR CAUSING A GAS BEING ANALYZED TO BE IONIZED, MEANS SELECTIVELY PASSING HYDROGEN INTO SAID TUBE MEANS WHEREIN SAID HYDROGEN CAN BE ACTED ON BY SAID IONIZING MEANS SAID HYDROGEN PASSING MEANS INCLUDING A HYDROGEN PERMEABLE MEMBRANE FORMED IN ONE END OF SAID TUBE MEANS, AND LIGHT-SENSITIVE MEANS FOR CONTROLLING THE TEMPERATURE OF SAID HYDROGEN PASSING MEANS, SAID LIGHT-SENSITIVE MEANS BEING ACTIVATED BY THE SPECTRAL EMISSION OF GAS IONIZED BY SAID IONIZING MEANS, SAID TEMPERATURE BEING INVERSELY PROPORTIONAL TO THE AMOUNT OF SPECTRALLY EMITTED LIGHT STRIKING SAID LIGHT-SENSITIVE MEANS.
Claim 2
Dependent Claim
99 words
A HYDROGEN DETECTOR COMPRISING: TUBE MEANS HAVING A CAPILLARY PORTION FOR CAUSING A GAS BEING ANALYZED TO BE IONIZED, MEANS SELECTIVELY PASSING HYDROGEN INTO SAID TUBE MEANS WHEREIN SAID HYDROGEN CAN BE ACTED ON BY SAID IONIZING MEANS SAID HYDROGEN PASSING MEANS INCLUDING A HYDROGEN PERMEABLE MEMBRANE FORMED IN ONE END OF SAID TUBE MEANS, AND LIGHT-SENSITIVE MEANS FOR CONTROLLING THE TEMPERATURE OF SAID HYDROGEN PASSING MEANS, SAID LIGHT-SENSITIVE MEANS BEING ACTIVATED BY THE SPECTRAL EMISSION OF GAS IONIZED BY SAID IONIZING MEANS, SAID TEMPERATURE BEING INVERSELY PROPORTIONAL TO THE AMOUNT OF SPECTRALLY EMITTED LIGHT STRIKING SAID LIGHT-SENSITIVE MEANS.
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |