US3025141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the detection of halogen-containing compounds in air
Assignee: Individual
•
Filing: 1959-08-19
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Granted: 1962-03-13
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Expires: 1979-08-19
Abstract
No abstract record available.
Inventors
- 👤 Smissen Carl Ernst Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:55
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/71; G01N21/72; Y; Y10; Y10T; Y10T436/00; Y10T436/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS FOR THE COLORMETRIC DETECTION OF HALOGEN COMPOUNDS IN A TEST GAS IGNITED IN A BURNER COMPRISING MIXING THE TEST GAS WITH A GAS INCLUDING A FUEL GAS, PASING THE MIXED GASES OVER AND IN CONTACT WITH HEATED COPPER, AND THEN IMMEDIATELY IGNITING THE MIXED GAS TO FORM A FLAME SPACED FROM AND WITHOUT CONTACT WITH SAID COPPER AND COLORED IN ACCORDING WITH THE PRESENCE OF HALOGEN COMPOUNDS IN THE TEST GAS.
Claim 2
Dependent Claim
73 words
A PROCESS FOR THE COLORMETRIC DETECTION OF HALOGEN COMPOUNDS IN A TEST GAS IGNITED IN A BURNER COMPRISING MIXING THE TEST GAS WITH A GAS INCLUDING A FUEL GAS, PASING THE MIXED GASES OVER AND IN CONTACT WITH HEATED COPPER, AND THEN IMMEDIATELY IGNITING THE MIXED GAS TO FORM A FLAME SPACED FROM AND WITHOUT CONTACT WITH SAID COPPER AND COLORED IN ACCORDING WITH THE PRESENCE OF HALOGEN COMPOUNDS IN THE TEST GAS.
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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |