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US2915883A
Expired / Lapsed
US
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Gas-fractionating column
Assignee: US Philips Corp
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Filing: 1954-06-18
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Granted: 1959-12-08
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Expires: 1974-06-18
Abstract
No abstract record available.
Inventors
- 👤 Ster Johannes Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:04
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/905; Y10S62/906; Y10S62/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A GAS FRACTIONATING APPARATUS FOR SEPARATING GASEOUS MIXTURES INTO AT LEAST TWO FRACTIONS COMPRISING A FRACTIONATING COLUMN HAVING A BOILING VESSEL AT THE BOTTOM THEREOF FOR THE LIQUID PORTION OF THE FRACTION OF THE HIGHER BOILING POINT, A DUCT FOR THE SUPPLY OF GASEOUS MIXTURE TO SAID COLUMN, A TUBE IN THE BOILING VESSEL FOT THE CONDUCT OF VAPOR OF HIGH BOILNG FRACTION TO THE ATMOSPHERE, SAID TUBE HAVING A PART THEREOF EXTENDING THROUGH SAID COLUMN AND PROVIDED WITH MEANS IN HEAT EXCHANGING RELATIONSHIP WITH SAID GASEOUS MIXTURE BEING INTRODUCED INTO SAID COLUMN, AN INSULATED JACKET SURROUNDING SAID COLUMN BUT BEING SPACED ONLY FROM THE LOWER PART OF SAID COLUMN TO THEREBY FORM A PASSAGE OUTSIDE OF THE COLUMN FOR TRANSPORTING THE GASEOUS MIXTURE TO BE SEPARATED TO SAID COLUNM AT A POINT SUBSTANTIALLY INTERMEDIATE OF THE ENDS THEREOF, SAID PASSAGE BEING INTERCONNECTED WITH SAID DUCT, A HEAT EXCHANGER BY WHICH THE LIQUID PORTION OF THE FRACTION OF
Claim 2
Dependent Claim
158 words
A GAS FRACTIONATING APPARATUS FOR SEPARATING GASEOUS MIXTURES INTO AT LEAST TWO FRACTIONS COMPRISING A FRACTIONATING COLUMN HAVING A BOILING VESSEL AT THE BOTTOM THEREOF FOR THE LIQUID PORTION OF THE FRACTION OF THE HIGHER BOILING POINT, A DUCT FOR THE SUPPLY OF GASEOUS MIXTURE TO SAID COLUMN, A TUBE IN THE BOILING VESSEL FOT THE CONDUCT OF VAPOR OF HIGH BOILNG FRACTION TO THE ATMOSPHERE, SAID TUBE HAVING A PART THEREOF EXTENDING THROUGH SAID COLUMN AND PROVIDED WITH MEANS IN HEAT EXCHANGING RELATIONSHIP WITH SAID GASEOUS MIXTURE BEING INTRODUCED INTO SAID COLUMN, AN INSULATED JACKET SURROUNDING SAID COLUMN BUT BEING SPACED ONLY FROM THE LOWER PART OF SAID COLUMN TO THEREBY FORM A PASSAGE OUTSIDE OF THE COLUMN FOR TRANSPORTING THE GASEOUS MIXTURE TO BE SEPARATED TO SAID COLUNM AT A POINT SUBSTANTIALLY INTERMEDIATE OF THE ENDS THEREOF, SAID PASSAGE BEING INTERCONNECTED WITH SAID DUCT, A HEAT EXCHANGER BY WHICH THE LIQUID PORTION OF THE FRACTION OF
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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |