US2909582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-12-31
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Granted: 1959-10-20
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Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Bleich Leon
- 👤 Howard G Codet
- 👤 Charles E Hemminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:10
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
AN IMPROVED PROCESS FOR UPGRADING NAPHTHAS BOILING IN THE RANGE OF C5 TO 180* F., AND COMPRISING NORMAL PENTANE AND HEXANE AS WELL AS SUBSTANTIAL PORTIONS OF AROMATICS AND THE OTHER CYCLIC HYDROCARBONS WHICH COMPRISES PASSING A VAPORIZED STREAM OF SAID NAPHTHA TO AN ADSORPTION ZONE, ADSORPTION STRAIGHT CHAIN NAPHTA TO AN FROM SAID STREAM AND REJECTING BRANCHED CHAIN AND AROMATICS AND OTHER CYCLIC HYDROCARBONS, PASSING UNADSORBED BRANCHED CHAIN PENTANES AND HEXANES AND AROMATICS AND OTHER CYCLIC HYDROCARBONS TO A MULTIPLE FRACTIONATION ZONE, DESORBING AND WITHDRAWING STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORPTION ZONE, PASSING SAID DESORBED HYDROCARBONS TO AN ISOMERIZATION ZONE, WITHDRAWING AN ISOMERIZATE COMPRISING BRANCHED CHAIN PENTANES AND HEXANES FROM SAID ZONE, PASSING SAID ISOMERIZATE TO SAID ADSORPTION ZONE FOR ADSORPTION OF UNREACTED STRAIGHT CHAIN HYDROCARBONS, FRACTIONATING AROMATICS AND CYCLIC HYDRO-
Claim 2
Dependent Claim
132 words
AN IMPROVED PROCESS FOR UPGRADING NAPHTHAS BOILING IN THE RANGE OF C5 TO 180* F., AND COMPRISING NORMAL PENTANE AND HEXANE AS WELL AS SUBSTANTIAL PORTIONS OF AROMATICS AND THE OTHER CYCLIC HYDROCARBONS WHICH COMPRISES PASSING A VAPORIZED STREAM OF SAID NAPHTHA TO AN ADSORPTION ZONE, ADSORPTION STRAIGHT CHAIN NAPHTA TO AN FROM SAID STREAM AND REJECTING BRANCHED CHAIN AND AROMATICS AND OTHER CYCLIC HYDROCARBONS, PASSING UNADSORBED BRANCHED CHAIN PENTANES AND HEXANES AND AROMATICS AND OTHER CYCLIC HYDROCARBONS TO A MULTIPLE FRACTIONATION ZONE, DESORBING AND WITHDRAWING STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORPTION ZONE, PASSING SAID DESORBED HYDROCARBONS TO AN ISOMERIZATION ZONE, WITHDRAWING AN ISOMERIZATE COMPRISING BRANCHED CHAIN PENTANES AND HEXANES FROM SAID ZONE, PASSING SAID ISOMERIZATE TO SAID ADSORPTION ZONE FOR ADSORPTION OF UNREACTED STRAIGHT CHAIN HYDROCARBONS, FRACTIONATING AROMATICS AND CYCLIC HYDRO-
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |