US3140919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame ionization detection of materials
Assignee: Beckman Coulter Inc
•
Filing: 1961-04-24
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Granted: 1964-07-14
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Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 William S Gallaway
- 👤 Richard A Foster
- 👤 James C Sternberg
- 👤 Ralph A Dora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:30
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/626; Y; Y10; Y10T; Y10T436/00; Y10T436/19; Y10T436/196666
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
IN THE OPERATION OF A FLAME IONIZATION DETECTOR, THE IMPROVEMENT COMPRISING: UTILIZING CARBON MONOXIDE AS FUEL IN THE FLAME.
Claim 2
Dependent Claim
19 words
IN THE OPERATION OF A FLAME IONIZATION DETECTOR, THE IMPROVEMENT COMPRISING: UTILIZING CARBON MONOXIDE AS FUEL IN THE FLAME.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |