US2601009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of low-temperature separation of gases into constituents
Assignee: Institute of Inventive Research
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Filing: 1949-12-01
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Granted: 1952-06-17
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Expires: 1969-12-01
Abstract
No abstract record available.
Inventors
- 👤 Judson S Swearingen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:46
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0204; F25J3/0209; C; C07; C07C; C07C7/00; C07C7/04; F25J3/0228; F25J3/0233; F25J3/0238; F25J3/0242; F25J2200/00; F25J2200/02; F25J2200/38; F25J2200/74; F25J2205/00; F25J2205/50; F25J2245/00; F25J2245/02; F25J2270/00; F25J2270/04; F25J2270/90; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A METHOD OF SEPARATING A GASEOUS HYDROCARBON MIXTURE INTO ITS HEAVIER AND LIGHTER CONSTITUENTS, THE STEPS OF SEPARATING FROM SAID MIXTURE A PORTION OF ITS HEAVIER CONSTITUENTS IN LIQUID FORM, COOLING, FRACTIONATING AND RECTIFYING AT A LOWER TEMPERATURE THE REMAINDER OF SAID MIXTURE TO SEPARATE AN ADDITIONAL PORTION THEREOF IN LIQUID FORM, BRINGING SAID ADDITIONAL PORTION INTO HEAT EXCHANGE RELATION WITH THE MIXTURE APPROCHING THE LAST MENTIONED FRACTIONATING STEP TO LOWER THE TEMPERATURE OF THE MIXTURE
Claim 2
Dependent Claim
77 words
IN A METHOD OF SEPARATING A GASEOUS HYDROCARBON MIXTURE INTO ITS HEAVIER AND LIGHTER CONSTITUENTS, THE STEPS OF SEPARATING FROM SAID MIXTURE A PORTION OF ITS HEAVIER CONSTITUENTS IN LIQUID FORM, COOLING, FRACTIONATING AND RECTIFYING AT A LOWER TEMPERATURE THE REMAINDER OF SAID MIXTURE TO SEPARATE AN ADDITIONAL PORTION THEREOF IN LIQUID FORM, BRINGING SAID ADDITIONAL PORTION INTO HEAT EXCHANGE RELATION WITH THE MIXTURE APPROCHING THE LAST MENTIONED FRACTIONATING STEP TO LOWER THE TEMPERATURE OF THE MIXTURE
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) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |