US3087112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trace gas analyzer
Assignee: Engelhard Industries Inc
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Filing: 1959-12-30
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Granted: 1963-04-23
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 William C Pfefferele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:20
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/461; G01N27/00; G01N27/62; G01N27/68; G01N27/70; G01N30/62; G01N30/64; G01N30/70; H; H01; H01J; H01J41/00; H01J41/02; H01J41/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A GAS ANALYZING SYSTEM, MEANS FOR DIFFUSING PURIFYING A CARRIER GAS HAVING A HIGH IONIZATION POTENTIAL SO THAT IT HAS LESS THAN ONE PART PER MILLION CARRIER GAS, MEANS ING A LOWER IONIZATION POTENTIAL THAN THE CARRIER GAS, MEANS FOR COMBINING SAID CARRIER GAS WITH A COMPOSITE GAS SAMPLE TO BE ANALYZED WHICH HAS A LOWER IONIZATION POTENTIAL THAN THAT OF SAID CARRIER GAS, A PLURALITY OF CHROMATOGRAPHIC SEPARATION COLUMS, MEANS FOR APPLYING THE CARRIER GAS AND THE GAS SMAPLE TO BE ANALYZED TO SAID COLUMNS IN SERIES, AN ELECTRON TUBE HAVING A GAS INLET AND A GAS OUTLET, MEANS FOR COUPLING THE GAS FROM SAID COLUMNS TO SAID ELECTRON TUBE, A CATHODE, AN ACCELERATING GRID, A
Claim 2
Dependent Claim
118 words
IN A GAS ANALYZING SYSTEM, MEANS FOR DIFFUSING PURIFYING A CARRIER GAS HAVING A HIGH IONIZATION POTENTIAL SO THAT IT HAS LESS THAN ONE PART PER MILLION CARRIER GAS, MEANS ING A LOWER IONIZATION POTENTIAL THAN THE CARRIER GAS, MEANS FOR COMBINING SAID CARRIER GAS WITH A COMPOSITE GAS SAMPLE TO BE ANALYZED WHICH HAS A LOWER IONIZATION POTENTIAL THAN THAT OF SAID CARRIER GAS, A PLURALITY OF CHROMATOGRAPHIC SEPARATION COLUMS, MEANS FOR APPLYING THE CARRIER GAS AND THE GAS SMAPLE TO BE ANALYZED TO SAID COLUMNS IN SERIES, AN ELECTRON TUBE HAVING A GAS INLET AND A GAS OUTLET, MEANS FOR COUPLING THE GAS FROM SAID COLUMNS TO SAID ELECTRON TUBE, A CATHODE, AN ACCELERATING GRID, A
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |