US3223873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio frequency cell for gas chromatography
Assignee: AMERICAN INSTR CO Inc
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Filing: 1963-05-06
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Granted: 1965-12-14
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Expires: 1983-05-06
Abstract
No abstract record available.
Inventors
- 👤 William C Hampton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:35
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/64; G01N30/70; G01N22/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A GAS CHROMATOGRAPHY APPARATUS, A DETECTION CELL COMPRISING A GAS SAMPLING CHAMBER OF CONDUCTIVE MATERIAL, A COIL FORM OF INSULATING MATEIAL MOUNTED IN SAID CHAMBER, A BALLAST COIL WOUND ON SAID FORM, A HOLLOW METAL ELECTODE MOUNTED IN SAID FORM AND DEFING A CORE FOR SAID COIL, ONE WALL OF SAID CHAMBER BEING FORMED WITH A GAS INLET PASSAGE, A METAL GAS INLET TUBE SECURED IN SAID PASSAGE AND EXTENDING INTO SAID ELECTRODE, SAID INLET TUBE BEING CONDUCTIVELY CONNECTED TO SAID CHAMBER, SAID CHAMBER BEING PROVIDED WITH A GAS OUTLET PASSAGE SPACED FROM SAID INLET PASSAGE, CONDUCTOR MEANS CONNECTING SAID ELECTRODE TO ONE END OF SAID COIL, A RADIO FREGQUENCY IN TERMINAL MOUNTED IN AND INSULATED FROM A WALL PORTION OF SAID CHAMBER, AND CONDUCTOR MEANS CONNECTING SAID TERMINAL TO THE OTHER END OF SAID COIL.
Claim 2
Dependent Claim
137 words
IN A GAS CHROMATOGRAPHY APPARATUS, A DETECTION CELL COMPRISING A GAS SAMPLING CHAMBER OF CONDUCTIVE MATERIAL, A COIL FORM OF INSULATING MATEIAL MOUNTED IN SAID CHAMBER, A BALLAST COIL WOUND ON SAID FORM, A HOLLOW METAL ELECTODE MOUNTED IN SAID FORM AND DEFING A CORE FOR SAID COIL, ONE WALL OF SAID CHAMBER BEING FORMED WITH A GAS INLET PASSAGE, A METAL GAS INLET TUBE SECURED IN SAID PASSAGE AND EXTENDING INTO SAID ELECTRODE, SAID INLET TUBE BEING CONDUCTIVELY CONNECTED TO SAID CHAMBER, SAID CHAMBER BEING PROVIDED WITH A GAS OUTLET PASSAGE SPACED FROM SAID INLET PASSAGE, CONDUCTOR MEANS CONNECTING SAID ELECTRODE TO ONE END OF SAID COIL, A RADIO FREGQUENCY IN TERMINAL MOUNTED IN AND INSULATED FROM A WALL PORTION OF SAID CHAMBER, AND CONDUCTOR MEANS CONNECTING SAID TERMINAL TO THE OTHER END OF SAID COIL.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |