US3814583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for analyzing organic carbon in aqueous systems
Assignee: AEROCHEM RES LAB
•
Filing: 1972-06-07
•
Granted: 1974-06-04
•
Expires: 1992-06-07
Abstract
Abstract ORGANIC CARBON IN AN AQUEOUS MEDIUM IS BURNED AND DETECTED IN A FLAME IONIZATION UNIT IN WHICH THE WATER UNDERGOING ANALYSIS IS ATOMIZED TO A FINE SPRAY. THE FINE WATER SPRAY PASSES INTO THE COMBUSTION ZONE OF A HYDROGEN FLAME WHERE THE ORGANIC CARBON COMPOUNDS ARE IONIZED. THE IONIZED CARBON COMPOUNDS ARE DETECTED BY A COLLECTION ELECTRODE WHICH IS CONNECTED TO A ELECTRONIC CIRCUIT. ION EXCHANGERS ARE USED TO REMOVE INORGANIC MATERIALS, SUCH AS, ALKALI METAL SALTS WHICH INTERFERE WITH THE ANALYSIS, FROM SALT-CONTAINING WATER. D R A W I N G
Inventors
- 👤 W Miller
- 👤 H Calcote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:18
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/626; Y; Y10; Y10T; Y10T436/00; Y10T436/23; Y10T436/235
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |