US3319458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic apparatus for measuring hydrogen components
Assignee: Schneider Electric Systems USA Inc
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Filing: 1964-02-14
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Granted: 1967-05-16
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Expires: 1984-02-14
Abstract
No abstract record available.
Inventors
- 👤 William J Curren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:34
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/64; G01N30/66; G01N30/26; G01N30/28; G01N30/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
CHROMATOGRAPHIC APPARATUS ESPECIALLY ADAPTED FOR MEASURING THE AMOUNT OF HYDROGEN IN A GAS SAMPLE AND COMPRISING A SEPARATION COLUMN ARRANGED TO RECEIVE THE GAS SAMPLE, A THERMAL CONDUCTIVITY DETECTOR CONNECTED TO THE OUTPUT OF SAID COLUMN TO DEVELOP SIGNALS CORRESPONDING TO THE AMOUNTS OF THE SEPARATED COMPONENTS OF THE GAS SAMPLE, AND CARRIER GAS SUPPLY MEANS CONNECTED TO THE INPUT OF SAID COLUMN, SAID SUPPLY MEANS INCLUDING MEANS TO APPLY TO SAID INPUT A MIXED CARRIER GAS COMPOSED OF APPROXIMATELY 40% HYDROGEN IN HELIUM.
Claim 2
Dependent Claim
84 words
CHROMATOGRAPHIC APPARATUS ESPECIALLY ADAPTED FOR MEASURING THE AMOUNT OF HYDROGEN IN A GAS SAMPLE AND COMPRISING A SEPARATION COLUMN ARRANGED TO RECEIVE THE GAS SAMPLE, A THERMAL CONDUCTIVITY DETECTOR CONNECTED TO THE OUTPUT OF SAID COLUMN TO DEVELOP SIGNALS CORRESPONDING TO THE AMOUNTS OF THE SEPARATED COMPONENTS OF THE GAS SAMPLE, AND CARRIER GAS SUPPLY MEANS CONNECTED TO THE INPUT OF SAID COLUMN, SAID SUPPLY MEANS INCLUDING MEANS TO APPLY TO SAID INPUT A MIXED CARRIER GAS COMPOSED OF APPROXIMATELY 40% HYDROGEN IN HELIUM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |