US2881862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorptive fractionation process
Assignee: Union Oil Company of California
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Filing: 1957-05-03
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Granted: 1959-04-14
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Expires: 1977-05-03
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fleck
- 👤 Carlyle G Wight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:43
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0423; B01D53/06; B01D53/08; C; C10; C10G; C10G25/00; C10G25/02; C10G25/03; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/108; B01D2253/25; B01D2253/30; B01D2253/302; B01D2253/308; B01D2256/00; B01D2256/24; B01D2257/00; B01D2257/70; B01D2257/702; B01D2257/7027; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR SEPARATING FLUID MIXTURES WHICH COMPRISES FIRST CONTACTING THE MIXTURE WITH A SOLID ADSORBENT SATURATED WITH A DISPLACEMENT EXCHANGE COMPONENT THEREBY ADSORBING THE MORE READILY ADSORBABLE CONSTITUENTS OF SAID MIXTURE AND DISPLACING SAID EXCHANGE COMPONENT INTO ADMIXTURE WITH THE LESS READILY ADSORBABLE CONSTITUENTS FORMING A FIRST LEAN EFFLUENT, SEPARATING SAID EXCHANGE COMPONENT FROM SAID LEAN EFFLUENT LEAVING SAID LESS READILY ADSORBABLE CONSTITUENTS, NEXT CONTACTING THE ADSORBENT WITH A MONOR PORTION OF RECIRCULATED EXCHANGE COMPONENT TO DISPLACE AN INTERCUT EFFLUENT, THEN CONTACTING THE ADSORBENT WITH THE REMAINING PORTION OF SAID EXCHANGE COMPONENT THEREBY RESATURATING SAID ADSORBENT WITH PART OF SAID EXCHANGE COMPONENT AND DISPLACING SAID MORE READILY ADSORBALE CONSTITUENTS FROM THE ADSORBENT INTO ADMIXTURE WITH THE REMAINDER OF SAID EXCHANGE COMPONENT TO FORM A RICH EFFLUENT, SEPARATING SAID EXCHANGE
Claim 2
Dependent Claim
130 words
A PROCESS FOR SEPARATING FLUID MIXTURES WHICH COMPRISES FIRST CONTACTING THE MIXTURE WITH A SOLID ADSORBENT SATURATED WITH A DISPLACEMENT EXCHANGE COMPONENT THEREBY ADSORBING THE MORE READILY ADSORBABLE CONSTITUENTS OF SAID MIXTURE AND DISPLACING SAID EXCHANGE COMPONENT INTO ADMIXTURE WITH THE LESS READILY ADSORBABLE CONSTITUENTS FORMING A FIRST LEAN EFFLUENT, SEPARATING SAID EXCHANGE COMPONENT FROM SAID LEAN EFFLUENT LEAVING SAID LESS READILY ADSORBABLE CONSTITUENTS, NEXT CONTACTING THE ADSORBENT WITH A MONOR PORTION OF RECIRCULATED EXCHANGE COMPONENT TO DISPLACE AN INTERCUT EFFLUENT, THEN CONTACTING THE ADSORBENT WITH THE REMAINING PORTION OF SAID EXCHANGE COMPONENT THEREBY RESATURATING SAID ADSORBENT WITH PART OF SAID EXCHANGE COMPONENT AND DISPLACING SAID MORE READILY ADSORBALE CONSTITUENTS FROM THE ADSORBENT INTO ADMIXTURE WITH THE REMAINDER OF SAID EXCHANGE COMPONENT TO FORM A RICH EFFLUENT, SEPARATING SAID EXCHANGE
References Cited (Backward Citations)
US2495619A
Cited
US2638999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |