US3103471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionating column for kjeldahl apparatus and the like
Assignee: —
•
Filing: —
•
Granted: 1963-09-10
•
Expires: 1980-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:40
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/14; G01N31/00; G01N31/002; Y; Y10; Y10S; Y10S203/00; Y10S203/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
FRACTIONATING APPARATUS FOR NITROGEN ANALYSIS COMPRISING A STEAM DELIVERY TUBE HAVING A DELIVERY OPENING AT ONE END THEREOF, MEANS FOR CONNECTING A STILL TO SAID DELIVERY OPENING, AN INNER JACKET SURROUNDING SAID TUBE AND HAVING A VAPOR INLET OPENING SPACED ALONG SAID TUBE FROM SAID ONE END THEREOF, AN OUTER JACKET SURROUNDING AT LEAST A PORTION OF THE LENGTH OF SAID INNER JACKET AND FORMING A CHAMBER BETWEEN SAID INNER AND OUTER JACKETS, AN APERTURE FOR THE PASSING OF VAPOR FROM SAID INNER JACKET TO SAID CHAMBER, A DISCHARGE OPENING IN SAID OUTER JACKET, MEANS FOR CONNECTING A CONDENSER TO SAID DISCHARGE OPENING, AND A SUBSTANTIALLY ONE-WAY RETURN PASSAGE FROM SAID CHAMBER TO SAID INNER JACKET AT THE LOWER END OF SAID CHAMBER.
Claim 2
Dependent Claim
123 words
FRACTIONATING APPARATUS FOR NITROGEN ANALYSIS COMPRISING A STEAM DELIVERY TUBE HAVING A DELIVERY OPENING AT ONE END THEREOF, MEANS FOR CONNECTING A STILL TO SAID DELIVERY OPENING, AN INNER JACKET SURROUNDING SAID TUBE AND HAVING A VAPOR INLET OPENING SPACED ALONG SAID TUBE FROM SAID ONE END THEREOF, AN OUTER JACKET SURROUNDING AT LEAST A PORTION OF THE LENGTH OF SAID INNER JACKET AND FORMING A CHAMBER BETWEEN SAID INNER AND OUTER JACKETS, AN APERTURE FOR THE PASSING OF VAPOR FROM SAID INNER JACKET TO SAID CHAMBER, A DISCHARGE OPENING IN SAID OUTER JACKET, MEANS FOR CONNECTING A CONDENSER TO SAID DISCHARGE OPENING, AND A SUBSTANTIALLY ONE-WAY RETURN PASSAGE FROM SAID CHAMBER TO SAID INNER JACKET AT THE LOWER END OF SAID CHAMBER.
References Cited (Backward Citations)
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Cited
US1765960A
Cited
US2410045A
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US2470230A
Cited
US2675346A
Cited
US2667451A
Cited
US2907641A
Cited
US2859155A
Cited
US2907638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |