US2901329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustibles detector for gas chromatography
Assignee: Standard Oil Co
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Filing: 1957-09-24
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Granted: 1959-08-25
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Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 Kapff Sixt Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:40
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/64; G01N30/66; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
APPARATUS FOR EFFECTING RAPID AND EFFICIENT ANALYSES OF COMPLEX GASIFORM MIXTURES CONTAINING TRACE AMOUNTS OF COMBUSTIBLE HYDROCARBONS WHICH COMPRISES IN COMBINATION ELUTION-PARTITION COLUMN MEANS, CONDUIT MEANS FOR INTRODUCING AN OXYGEN-CONTAINING ELUTING GAS INTO SAID COLUMN MEANS, AND DETECTOR MEANS THROUGH WHICH SAID COLUMN MEANS DISCHARGES, SAID DETECTOR MEANS INCLUDING A METAL BLOCK HAVING A FIRST RELATIVELY LARGE CAVITY, A BORE IN SAID BLOCK HAVING ITS AXIS ARRANGED TRANSVERSE TO SAID CAVITY REMOTE FROM SAID BORE, A SECOND NON-CATALYTIC REFERENCE ELEMENT IN ANOTHER PORTION OF SAID FIRST CAVITY, SAID CATALYTIC AND NON-CATALYTIC ELEMENTS BEING CONNECTED WITH A PAIR OF RESISTANCES IN AN ELECTRICAL BRIDGE CIRCUIT, AND GAS PERVIOUS DIFFUSION SCREEN MEANS ARRANGED WITHIN SAID BORE AND EXTENDING THROUGH SAID FIRST CAVITY BETWEEN THE SAID ELEMENTS.
Claim 2
Dependent Claim
124 words
APPARATUS FOR EFFECTING RAPID AND EFFICIENT ANALYSES OF COMPLEX GASIFORM MIXTURES CONTAINING TRACE AMOUNTS OF COMBUSTIBLE HYDROCARBONS WHICH COMPRISES IN COMBINATION ELUTION-PARTITION COLUMN MEANS, CONDUIT MEANS FOR INTRODUCING AN OXYGEN-CONTAINING ELUTING GAS INTO SAID COLUMN MEANS, AND DETECTOR MEANS THROUGH WHICH SAID COLUMN MEANS DISCHARGES, SAID DETECTOR MEANS INCLUDING A METAL BLOCK HAVING A FIRST RELATIVELY LARGE CAVITY, A BORE IN SAID BLOCK HAVING ITS AXIS ARRANGED TRANSVERSE TO SAID CAVITY REMOTE FROM SAID BORE, A SECOND NON-CATALYTIC REFERENCE ELEMENT IN ANOTHER PORTION OF SAID FIRST CAVITY, SAID CATALYTIC AND NON-CATALYTIC ELEMENTS BEING CONNECTED WITH A PAIR OF RESISTANCES IN AN ELECTRICAL BRIDGE CIRCUIT, AND GAS PERVIOUS DIFFUSION SCREEN MEANS ARRANGED WITHIN SAID BORE AND EXTENDING THROUGH SAID FIRST CAVITY BETWEEN THE SAID ELEMENTS.
References Cited (Backward Citations)
US1957341A
Cited
US2652315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |