US2701710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionating column
Assignee: Air Products Inc
•
Filing: 1949-08-11
•
Granted: 1955-02-08
•
Expires: 1969-08-11
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Schilling
- 👤 Lee S Twomey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:41
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/044; F25J3/04406; F25J3/04412; F25J3/04763; F25J3/04866; F25J3/04896; F25J3/04903; F25J3/04927; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/905; Y10T; Y10T137/00; Y10T137/8593
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN A FRACTIONATING COLUMN, MEANS FOR DIVIDING A LIQUID STREAM INTO A PLURALITY OF LESSER STREAMS HAVING A SUBSTANTIALLY CONSTANT VOLUMETRIC RELATION, COMPRISING: A SUBSTANTIALLY CIRCULAR CHAMBER ADAPTED TO RECEIVE SAID STREAM AND HAVING A ROW OF DRAINAGE PERFORATIONS SUBSTANTIALLY HORIZONTALLY DISPOSED IN ITS WALL; A RING MATERIAL SURROUNDING AND SPACED FROM SAID CHAMBER AND SO
Claim 2
Dependent Claim
56 words
IN A FRACTIONATING COLUMN, MEANS FOR DIVIDING A LIQUID STREAM INTO A PLURALITY OF LESSER STREAMS HAVING A SUBSTANTIALLY CONSTANT VOLUMETRIC RELATION, COMPRISING: A SUBSTANTIALLY CIRCULAR CHAMBER ADAPTED TO RECEIVE SAID STREAM AND HAVING A ROW OF DRAINAGE PERFORATIONS SUBSTANTIALLY HORIZONTALLY DISPOSED IN ITS WALL; A RING MATERIAL SURROUNDING AND SPACED FROM SAID CHAMBER AND SO
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |