Chemical-ionization detection method and apparatus
Abstract
Abstract A CHEMICAL-IONIZATION DETERCTOR CAPABLE OF BEING OPERAATED IN A SPECIFIC DETECTION MODE FOR THE SPECIFIC DETECTION OF COMPOUNDS OF SULPHUR, NITROGEN, PHOSPHORUS, ETC., IN THE PRESENCE OF HYDROCARBONS. THE DETECTOR IS ALSO CAPABLE OF BEING OPERATED IN A NON-SPECIFIC MODE FOR THE DETECTION OF HYDROCARBONS. IN THE SPECIFIC DETECTION MODE, A NON-HYDROCARBON CONSTITUENT OF THE SAMPLE TO BE DETECTED IS REACTED WITH AN ALKALI METAL VAPOR IN AREACTION ZONE BY THE APPLICATION OF HEAT SUPPLIED BY A HEATER IN HEAT EXCHANGING RELATIONSHIP WITH THE REACTION ZONE. IN THE REACTION ZONE, A CHEMI-IONZATION REACTION ZONE. IN THE ABSENCE OF OXYGEN WITH CERTAIN NON-HYDROCARBON CONSTITUENTS OF THE GAS STREAM TO ANALYZED. THE IONS THUS PRODUCED ARE COLLECTED BY THE ACTION OF AN ELECTRIC FIELD TO PRODUCE AN ION CURRENT OF AN AMPLITUDE DETERMINATIVE OF THE AMOUNT OF NON-HYDROCARBON CONSTITUENT.
Inventors
- 👤 Martin E Scolnick
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |