Patent US2283768A successfully refreshed from Google Patents.
Patent US3205711A successfully refreshed from Google Patents.
US3205711A
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Sample injection in gas chromatography
Assignee: Microtek Instruments Inc
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Filing: 1963-04-11
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Granted: 1965-09-14
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Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 Harris Rano Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:09
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/04; G01N30/16; G01N30/18; G01N30/06; G01N30/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN AN INJECTOR FOR INSERTION INTO THE SAMPLE VAPORIZATION CHAMBER OF GAS CHROMATOGRAPH AND COMPOSED OF SAMPLE CARRYING MANS ATTACHED TO A SHAFT ALIGNED THEREWITH, THE IMPROVEMENT IN WHICH SAID MEANS COMPRISE A THIN-WALLED CAPILLARY TUBE WHICH IS CHARACTERIZED (A) BY BEING SEALED AT ONE END, (B) BEING OPEN AT ITS OTHER END, (C) BY HAVING A CAPACITY OF FROM ABOUT 0.2 TO ABOUT 5 MICROLITERS, (D) BY HAVING A RATIO BETWEEN ITS LENGTH AND ITS INNER DIAMETER WITHIN THE RANGE OF FROM ABOUT 10:1 UP TO ABOUT 2000:1, AND (E) BY HAVING A SUBSTANTIALLY UNIFORM WALL THICKNESS ALONT ITS LEGTH.
Claim 2
Dependent Claim
101 words
IN AN INJECTOR FOR INSERTION INTO THE SAMPLE VAPORIZATION CHAMBER OF GAS CHROMATOGRAPH AND COMPOSED OF SAMPLE CARRYING MANS ATTACHED TO A SHAFT ALIGNED THEREWITH, THE IMPROVEMENT IN WHICH SAID MEANS COMPRISE A THIN-WALLED CAPILLARY TUBE WHICH IS CHARACTERIZED (A) BY BEING SEALED AT ONE END, (B) BEING OPEN AT ITS OTHER END, (C) BY HAVING A CAPACITY OF FROM ABOUT 0.2 TO ABOUT 5 MICROLITERS, (D) BY HAVING A RATIO BETWEEN ITS LENGTH AND ITS INNER DIAMETER WITHIN THE RANGE OF FROM ABOUT 10:1 UP TO ABOUT 2000:1, AND (E) BY HAVING A SUBSTANTIALLY UNIFORM WALL THICKNESS ALONT ITS LEGTH.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |