US2818455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desorption of straight chain hydrocarbons from selective adsorbents
Assignee: Texaco Inc
•
Filing: 1955-03-28
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Granted: 1957-12-31
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Expires: 1975-03-28
Abstract
No abstract record available.
Inventors
- 👤 Wiley P Ballard
- 👤 Samuel P Dickens
- 👤 Benjamin F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:20
CPC Classifications
C; C10; C10G; C10G25/00; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
A METHOD OF DESORBING STRAIGHT CHAIN HYDROCARBONS FROM A SELECTIVE ADSORBENT WHICH CONTAINS STRAIGHT CHAIN HYDROCARBONS ADSORBED THEREIN TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS WHICH COMPRISES CONTACTING SAID ADSORBENT WITH A GASEOUS HYDROCARBON CONTAINING AT LEAST 3 CARBON ATOMS PER MOLECULE AT AN ELEVATED TEMPERATURE SUFFICIENTLY HIGH TO EFFECT DESORPTION OF SAID STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT, SAID ELEVATED TEMPERATURE BEING ABOVE THE CRITICAL TEMPERATURE OF SAID GASEOUS HYDROCARBON.
Claim 2
Independent Claim
72 words
A METHOD OF DESORBING STRAIGHT CHAIN HYDROCARBONS FROM A SELECTIVE ADSORBENT WHICH CONTAINS STRAIGHT CHAIN HYDROCARBONS ADSORBED THEREIN TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS WHICH COMPRISES CONTACTING SAID ADSORBENT WITH A GASEOUS HYDROCARBON CONTAINING AT LEAST 3 CARBON ATOMS PER MOLECULE AT AN ELEVATED TEMPERATURE SUFFICIENTLY HIGH TO EFFECT DESORPTION OF SAID STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT, SAID ELEVATED TEMPERATURE BEING ABOVE THE CRITICAL TEMPERATURE OF SAID GASEOUS HYDROCARBON.
Claim 3
Dependent Claim
145 words
A COMBINATION HYDROCARBON TREATING OPERATION WHICH COMPRISES SUBJECTING A HYDROCARBON FRACTION IN THE NAPHTHA BOILING RANGE AND CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAINHYDROCARBONS TO CATALYST REFORMING WITH THE RESULTING PRODUCTION OF A CATALYSTIC REFORMATE HAVING AN INCREASED PROPORTION OF NONSTRAIGHT CHAIN HYDROCARBONS, CONTACTING SAID CATALYTIC REFORMATE WITH A SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS X THE SUBSTANTIAL EXCLUSION OF NON-STRAIHGT CHAIN HYDROCARBONS TO ADSORB STRAIGHT CHAIN HYDROCARBONS THEREFROM WITH THE RESULTING PRODUCTION OF A TREATED REFORMATE HAVING A REDUCED PROPORTION OF STRAIGHT CHAIN HYDROCARBONS THEREIN, AND CONTACTING SAID ADSORBENT NOW CONTAINING STRAIGHT CHAIN HYDROCARBONS ADSORBED THEREIN WITH A GASEOUS HYDROCARBON CONTAINING AT LEAST 3 CARBON ATOMS PER MOLECULE AT A TEMPERATURE ABOVE ABOUT THE CRITICAL TEMPERATURE OF THE STRAIGHT CHAIN HYDROCARBON ADSORBED TEHREIN POSSESSING THE HIGHEST CRITICAL TEMPERATURE SO AS TO EFFECT THE DESORPTION OF SAID STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT.
Claim 4
Dependent Claim
145 words
A COMBINATION HYDROCARBON TREATING OPERATION WHICH COMPRISES SUBJECTING A HYDROCARBON FRACTION IN THE NAPHTHA BOILING RANGE AND CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAINHYDROCARBONS TO CATALYST REFORMING WITH THE RESULTING PRODUCTION OF A CATALYSTIC REFORMATE HAVING AN INCREASED PROPORTION OF NONSTRAIGHT CHAIN HYDROCARBONS, CONTACTING SAID CATALYTIC REFORMATE WITH A SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS X THE SUBSTANTIAL EXCLUSION OF NON-STRAIHGT CHAIN HYDROCARBONS TO ADSORB STRAIGHT CHAIN HYDROCARBONS THEREFROM WITH THE RESULTING PRODUCTION OF A TREATED REFORMATE HAVING A REDUCED PROPORTION OF STRAIGHT CHAIN HYDROCARBONS THEREIN, AND CONTACTING SAID ADSORBENT NOW CONTAINING STRAIGHT CHAIN HYDROCARBONS ADSORBED THEREIN WITH A GASEOUS HYDROCARBON CONTAINING AT LEAST 3 CARBON ATOMS PER MOLECULE AT A TEMPERATURE ABOVE ABOUT THE CRITICAL TEMPERATURE OF THE STRAIGHT CHAIN HYDROCARBON ADSORBED TEHREIN POSSESSING THE HIGHEST CRITICAL TEMPERATURE SO AS TO EFFECT THE DESORPTION OF SAID STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT.
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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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |