US3201971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas chromatograph
Assignee: Beckman Coulter Inc
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Filing: 1962-10-08
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Granted: 1965-08-24
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Villalobos Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:40
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/468; G01N30/40; G01N30/04; G01N30/16; G01N30/20; G01N2030/204; G01N2030/405; G01N30/84; G01N2030/8411; G01N2030/8417; G01N30/461
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A GAS CHROMATOGRAPH HAVING SIMPLE INJECTION MEANS, DETECTOR MEANS AND MEANS FOR DIRECTING A STREAM OF CARRIER GAS THERETHROUGH, THE COMBINATION OF: A SPLITTER COLUMN: A STORAGE COLUMN: A REGROUPING COLUMN: GAS FLOW CONTROL VALVE MEANS MOVABLE BETWEEN FORWARD AND REVERSE POSITIONS; AND CONDUIT MEANS INTERCONNECTING SAID COLUMNS, VALVE MEANS, SAMPLE INJECTION MEANS, AND DETECTOR MEANS FOR GAS FLOW FROM SAID SAMPLE INJECTION MEANS THROUGH SAID SPLITTER COLUMN, STORAGE COLUMN AND REGROUPING COLUMN TO SAID DETECTOR MEANS, SAID VALVE MEANS BEING CONNECTED THROUGH SAID CONDUIT MEANS TO OPPOSITE ENDS OF SAID STORAGE COLUMN SO THAT FLOW THROUGH SAID STORAGE COLUMN IS IN A FIRST DIRECTION WHEN SAID VALVE MEANS IS IN SAID FORWARD POSITION, AND SO THAT FLOW THROUGH SAID STORAGE COLUMN IS IN THE REVERSE DIRECTION WHEN SAID VALVE MEANS IS IN SAID REVERSE POSITION.
Claim 2
Dependent Claim
137 words
IN A GAS CHROMATOGRAPH HAVING SIMPLE INJECTION MEANS, DETECTOR MEANS AND MEANS FOR DIRECTING A STREAM OF CARRIER GAS THERETHROUGH, THE COMBINATION OF: A SPLITTER COLUMN: A STORAGE COLUMN: A REGROUPING COLUMN: GAS FLOW CONTROL VALVE MEANS MOVABLE BETWEEN FORWARD AND REVERSE POSITIONS; AND CONDUIT MEANS INTERCONNECTING SAID COLUMNS, VALVE MEANS, SAMPLE INJECTION MEANS, AND DETECTOR MEANS FOR GAS FLOW FROM SAID SAMPLE INJECTION MEANS THROUGH SAID SPLITTER COLUMN, STORAGE COLUMN AND REGROUPING COLUMN TO SAID DETECTOR MEANS, SAID VALVE MEANS BEING CONNECTED THROUGH SAID CONDUIT MEANS TO OPPOSITE ENDS OF SAID STORAGE COLUMN SO THAT FLOW THROUGH SAID STORAGE COLUMN IS IN A FIRST DIRECTION WHEN SAID VALVE MEANS IS IN SAID FORWARD POSITION, AND SO THAT FLOW THROUGH SAID STORAGE COLUMN IS IN THE REVERSE DIRECTION WHEN SAID VALVE MEANS IS IN SAID REVERSE POSITION.
References Cited (Backward Citations)
US2846121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |