Patent US3126731A successfully refreshed from Google Patents.
US3126731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
R armstrong
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:33
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/78; G01N30/64; G01N30/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN GAS CHROMATOGRAPHY APPARATUS, A REFERENCE CELL COMPRISING A HEATED WIRE ARRANGED TO BE CONTACTED BY GASES FED THERETO; MEANS FOR FEEDING A DISCRETE QUANTITY OF THE GAS MIXTURE TO BE ANALYZED TO SAID REFERENCE CELL ALONG WITH A SUBSTANTIALLY CONTINUOUS STREAM OF CARRIER GAS, THE THERMAL CONDUCTIVITIES OF THE COMPONENTS OF SAID MIXTURE BEING SIMILAR, MEANS COUPLED TO THE OUTPUT SIDE OF SAID REFERENCE CELL FOR SEPARATING SAID MIXTURE INTO ITS VARIOUS COMPONENTS, A MEASURING CELL COMPRISING A HEATED WIRE ARRANGED TO BE CONTACTED BY GASES FED THERETO; MEANS FOR FEEDING THE SEPARATED COMPONENTS LOF SAID MIXTURE, ALONG WITH SAID STREAM OF CARRIER GAS, FROM SAID SEPARATING MEANS TO SAID MEASURING CELL, AND MEANS CONNECTING BOTH OF
Claim 2
Dependent Claim
118 words
IN GAS CHROMATOGRAPHY APPARATUS, A REFERENCE CELL COMPRISING A HEATED WIRE ARRANGED TO BE CONTACTED BY GASES FED THERETO; MEANS FOR FEEDING A DISCRETE QUANTITY OF THE GAS MIXTURE TO BE ANALYZED TO SAID REFERENCE CELL ALONG WITH A SUBSTANTIALLY CONTINUOUS STREAM OF CARRIER GAS, THE THERMAL CONDUCTIVITIES OF THE COMPONENTS OF SAID MIXTURE BEING SIMILAR, MEANS COUPLED TO THE OUTPUT SIDE OF SAID REFERENCE CELL FOR SEPARATING SAID MIXTURE INTO ITS VARIOUS COMPONENTS, A MEASURING CELL COMPRISING A HEATED WIRE ARRANGED TO BE CONTACTED BY GASES FED THERETO; MEANS FOR FEEDING THE SEPARATED COMPONENTS LOF SAID MIXTURE, ALONG WITH SAID STREAM OF CARRIER GAS, FROM SAID SEPARATING MEANS TO SAID MEASURING CELL, AND MEANS CONNECTING BOTH OF
References Cited (Backward Citations)
US2591760A
Cited
US2868011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |