Patent US3324628A successfully refreshed from Google Patents.
US3324628A
Expired / Lapsed
US
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Preparative treatment of samples for subsequent processing in a gas chromatograph
Assignee: Scientific Industries Inc
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Filing: 1964-09-08
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Granted: 1967-06-13
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Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Natelson Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:19
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/405; G01N30/00; G01N30/02; G01N30/04; G01N30/06; G01N30/14; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375; Y10T436/255
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR SEPARATING VOLATILE TRACE COMPONENTS FROM A LIQUID SAMPLE CONSISTING PRINCIPALLY OF UNDESIRED COMPONENTS AND CONTAINING SAID VOLATILE TRACE COMPONENTS, COMPRISING THE STEPS OF: PLACING AN ABSORBENT MATERIAL FOR PHYSICALLY ABSORBING THE UNDESIRED COMPONENTS PRESENT IN SAID LIQUID SAMPLE IN A CLOSED CONTAINER HAVING INLET AND OUTLET TUBES AND A SEALED APERTURE; SWEEPING AN INERT GAS THROUGH THE CONTAINER BY MEANS OF SAID TUBES TO REMOVE THE AIR THEREFROM, THEN CLOSING SAID TUBES TO SEAL OFF THE CONTAINER; INJECTING SAID LIQUID SAMPLE INTO SAID CONTAINER THROUGH SAID SEALED APERTURE;
Claim 2
Dependent Claim
91 words
A PROCESS FOR SEPARATING VOLATILE TRACE COMPONENTS FROM A LIQUID SAMPLE CONSISTING PRINCIPALLY OF UNDESIRED COMPONENTS AND CONTAINING SAID VOLATILE TRACE COMPONENTS, COMPRISING THE STEPS OF: PLACING AN ABSORBENT MATERIAL FOR PHYSICALLY ABSORBING THE UNDESIRED COMPONENTS PRESENT IN SAID LIQUID SAMPLE IN A CLOSED CONTAINER HAVING INLET AND OUTLET TUBES AND A SEALED APERTURE; SWEEPING AN INERT GAS THROUGH THE CONTAINER BY MEANS OF SAID TUBES TO REMOVE THE AIR THEREFROM, THEN CLOSING SAID TUBES TO SEAL OFF THE CONTAINER; INJECTING SAID LIQUID SAMPLE INTO SAID CONTAINER THROUGH SAID SEALED APERTURE;
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |