US2920038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline hydrocarbon separation recovery process utilizing molecular sieves
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-12-05
•
Granted: 1960-01-05
•
Expires: 1976-12-05
Abstract
No abstract record available.
Inventors
- 👤 Jr George F Feldbauer
- 👤 Charles E Jahnig
- 👤 Norman J Weinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:48
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A PROCESS FOR THE SEPARATING OF STRAIGHT CHAIN HYDROCARBONS FROM A FEED MIXTURE BOILING IN THE GASOLINE BOILING RANGE AND CONTAINING NON-NORMAL PARAFFIN CONSTITUENTS BY CONTACTING SAID MIXTURE WITH MOLECULAR SIEVES IN AN ADSORPTION ZONE WHEREBY SAID STRAIGHT CHAIN HYDROCARBONS ARE SELECTIVELY ADSORBED AND SAID NON-NORMAL PARAFFIN CONSTITUENTS UNADSORBED, AND WHEREIN SAID MOLECULAR SIEVES ARE DESORBED WITH AN OLEFIN COMPRISING GAS AND SAID OLEFIN COMPRISING GAS IF ITSELF ADSORBED, AND WHEREIN SAID OLEFIN CONTAINING GAS IS IN TURN DESORBED BY STRAIGHT CHAIN HYDROCARBONS PRESENT IN SAID HYDROCARBON MIXTURE AGAIN FED TO SAID ADSORPTION ZONE, ANS A STREAM COMPRISING SAIL OLEFINS AND NON-STRAIGHT CHAIN HYDROCARBONS UNABSORBED FROM SAID FEED MIXTURE IS WITHDRAWN FROM SAID ZONE, THE IMPROVEMENT WHICH COMPRISES SCRUB-
Claim 2
Dependent Claim
120 words
IN A PROCESS FOR THE SEPARATING OF STRAIGHT CHAIN HYDROCARBONS FROM A FEED MIXTURE BOILING IN THE GASOLINE BOILING RANGE AND CONTAINING NON-NORMAL PARAFFIN CONSTITUENTS BY CONTACTING SAID MIXTURE WITH MOLECULAR SIEVES IN AN ADSORPTION ZONE WHEREBY SAID STRAIGHT CHAIN HYDROCARBONS ARE SELECTIVELY ADSORBED AND SAID NON-NORMAL PARAFFIN CONSTITUENTS UNADSORBED, AND WHEREIN SAID MOLECULAR SIEVES ARE DESORBED WITH AN OLEFIN COMPRISING GAS AND SAID OLEFIN COMPRISING GAS IF ITSELF ADSORBED, AND WHEREIN SAID OLEFIN CONTAINING GAS IS IN TURN DESORBED BY STRAIGHT CHAIN HYDROCARBONS PRESENT IN SAID HYDROCARBON MIXTURE AGAIN FED TO SAID ADSORPTION ZONE, ANS A STREAM COMPRISING SAIL OLEFINS AND NON-STRAIGHT CHAIN HYDROCARBONS UNABSORBED FROM SAID FEED MIXTURE IS WITHDRAWN FROM SAID ZONE, THE IMPROVEMENT WHICH COMPRISES SCRUB-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |