US3119670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen detection method and apparatus
Assignee: BARBER Manufacturing Co
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Filing: 1961-11-29
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Granted: 1964-01-28
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph I Mitchell
- 👤 Jr Louis J Hillenbrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:16
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/223; G01N31/225; G01N1/00; G01N1/02; G01N1/22; G01N1/24; Y; Y10; Y10S; Y10S436/00; Y10S436/904; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE METHOD FOR DETECTING AND DETERMINING THE CONCENTRATION OF OXYGEN IN A GAS MIXTURE WHICH COMPRISES PASSING A MEASURED AMOUNT OF A GAS MIXTURE LENGTHWISE THROUGH AN APPARENTLY DRY PACKED BED OF FREE-FLOWING INERT PARTICULATE SUPPORT MATERIAL COATED WITH COPPER IMPREGNATED WITH A NITROGEN COMPOUND SELECTED FROM THE
Claim 2
Independent Claim
48 words
THE METHOD FOR DETECTING AND DETERMINING THE CONCENTRATION OF OXYGEN IN A GAS MIXTURE WHICH COMPRISES PASSING A MEASURED AMOUNT OF A GAS MIXTURE LENGTHWISE THROUGH AN APPARENTLY DRY PACKED BED OF FREE-FLOWING INERT PARTICULATE SUPPORT MATERIAL COATED WITH COPPER IMPREGNATED WITH A NITROGEN COMPOUND SELECTED FROM THE
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |