US3263488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for gas chromatography
Assignee: HP Inc
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Filing: 1963-03-04
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Granted: 1966-08-02
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Aaron J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:45
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/461; G01N30/466
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE METHOD OF EFFECTING SEPARATION BY GAS CHROMATOGRAPHY OF A PLURALITY OF COMPONENTS CONTAINED IN A MIXTURE, SAID METHOD COMPRISING THE STEPS OF: PASSING A CARRIER GAS CONTAINING SAID MIXTURE AT A PREDETERMINED FLOW RATE THROUGH A FIRST CHROMATOGRAPH COLUMN TO EFFECT SEPARATION OF SAID MIXTURE INTO A FIRST COMPONENT AND SECOND COMPONENTS, SAID SECOND COMPONENTS NORMALLY BEING ELUTED SUBSTANTIALLY SIMULTANEOUSLY AND PRIOR TO SAID FIRST COMPONENT, CONTINUOUSLY PASSING SAID CARRIER GAS CONTAINING SAID SECOND COMPONENTS ELUTED FROM SAID FIRST COLUMN AT SAID PREDETERMINED FLOW RATE THROUGH A SERIALLY CONNECTED SUBSTANTIALLY UNOBSTRUCTED CONDUIT AND SECOND CHROMATOGRAPH COLUMN TO SEPARATE SAID SECOND COMPONENTS, SAID CONDUIT HAVING A SUFFICIENT VOLUME SO RELATED TO SAID FLOW RATE TO DELAY IN TIME ONLY SAID SECOND COMPONENTS TO PREVENT SAID FIRST COMPONENT FROM ELUTING FROM SAID FIRST COLUMN AND SAID SECOND COMPONENTS FROM ELUTING FROM SAID SECOND COLUMN AT SUBSTANTIALLY THE SAME TIME, THE CARRIER GAS CONTINUOUSLY BEING FLOWED THROUGH BOTH SAID COLUMNS DURING THE ENTIRE PERIOD OF THE ABOVE SEPARATIONS.
Claim 2
Independent Claim
166 words
THE METHOD OF EFFECTING SEPARATION BY GAS CHROMATOGRAPHY OF A PLURALITY OF COMPONENTS CONTAINED IN A MIXTURE, SAID METHOD COMPRISING THE STEPS OF: PASSING A CARRIER GAS CONTAINING SAID MIXTURE AT A PREDETERMINED FLOW RATE THROUGH A FIRST CHROMATOGRAPH COLUMN TO EFFECT SEPARATION OF SAID MIXTURE INTO A FIRST COMPONENT AND SECOND COMPONENTS, SAID SECOND COMPONENTS NORMALLY BEING ELUTED SUBSTANTIALLY SIMULTANEOUSLY AND PRIOR TO SAID FIRST COMPONENT, CONTINUOUSLY PASSING SAID CARRIER GAS CONTAINING SAID SECOND COMPONENTS ELUTED FROM SAID FIRST COLUMN AT SAID PREDETERMINED FLOW RATE THROUGH A SERIALLY CONNECTED SUBSTANTIALLY UNOBSTRUCTED CONDUIT AND SECOND CHROMATOGRAPH COLUMN TO SEPARATE SAID SECOND COMPONENTS, SAID CONDUIT HAVING A SUFFICIENT VOLUME SO RELATED TO SAID FLOW RATE TO DELAY IN TIME ONLY SAID SECOND COMPONENTS TO PREVENT SAID FIRST COMPONENT FROM ELUTING FROM SAID FIRST COLUMN AND SAID SECOND COMPONENTS FROM ELUTING FROM SAID SECOND COLUMN AT SUBSTANTIALLY THE SAME TIME, THE CARRIER GAS CONTINUOUSLY BEING FLOWED THROUGH BOTH SAID COLUMNS DURING THE ENTIRE PERIOD OF THE ABOVE SEPARATIONS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |