Patent US3222412A successfully refreshed from Google Patents.
US3222412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonaceous adsorbents
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1960-06-27
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Granted: 1965-12-07
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Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Mason Ralph Burgess
- 👤 Jr Paul Earl Eberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:31
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/306
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
AN IMPROVED PROCESS FOR SEPARATING THREE-DIMENSIONAL HYDROCARBON MOLECULES COMPRISING DOUBLY BRANCHED CHAIN AND NAPHTHENIC HYDROCARBONS FROM A FEED CONTAINING OTHER HYDROCARBON TYPES, SAID OTHER HYDROCARBON TYPES COMPRISING SINGLY BRANCHED HYDROCARBONS, STRAIGHT CHAIN HYDROCARBONS, AND AROMATICS WHICH CONSISTS ESSENTIALLY OF TREATING COAL SELECTED FROM THE GROUP CONSISTING OF ANTHRACITE BITUMINOUS WITH FREE OXYGEN CONTAINING GAS AT A TEMPERATURE OF ABOUT 650-850*F. AND RECOVERING 30-90 WEIGHT PERCENT, BASED ON SAID COAL, OF AN ADSORPTIVE COAL CONTACTING SAID HYDROCARBON FEED WITH SAID ADSORPTIVE COAL, WHICH SELECTIVELY EXCLUDES THREEDIMENSIONAL HYDROCARBON MOLECULES, IN AN ADSORPTION ZONE ABSORBING SAID OTHER HYDROCARBON TYPES AND WITHDRAWING FROM SAID ADSORPTION ZONE A STREAM ENRICHED IN SAID THREE-DIMENSIONAL HYDROCARBONS AND DEPLETED IN SAID OTHER HYDROCARBON TYPES.
Claim 2
Dependent Claim
116 words
AN IMPROVED PROCESS FOR SEPARATING THREE-DIMENSIONAL HYDROCARBON MOLECULES COMPRISING DOUBLY BRANCHED CHAIN AND NAPHTHENIC HYDROCARBONS FROM A FEED CONTAINING OTHER HYDROCARBON TYPES, SAID OTHER HYDROCARBON TYPES COMPRISING SINGLY BRANCHED HYDROCARBONS, STRAIGHT CHAIN HYDROCARBONS, AND AROMATICS WHICH CONSISTS ESSENTIALLY OF TREATING COAL SELECTED FROM THE GROUP CONSISTING OF ANTHRACITE BITUMINOUS WITH FREE OXYGEN CONTAINING GAS AT A TEMPERATURE OF ABOUT 650-850*F. AND RECOVERING 30-90 WEIGHT PERCENT, BASED ON SAID COAL, OF AN ADSORPTIVE COAL CONTACTING SAID HYDROCARBON FEED WITH SAID ADSORPTIVE COAL, WHICH SELECTIVELY EXCLUDES THREEDIMENSIONAL HYDROCARBON MOLECULES, IN AN ADSORPTION ZONE ABSORBING SAID OTHER HYDROCARBON TYPES AND WITHDRAWING FROM SAID ADSORPTION ZONE A STREAM ENRICHED IN SAID THREE-DIMENSIONAL HYDROCARBONS AND DEPLETED IN SAID OTHER HYDROCARBON TYPES.
Claim 3
Dependent Claim
102 words
AN IMPROVED PROCESS FOR THE PREPARATION OF A SELECTIVE ADSORBENT WHICH CONSISTS ESSENTIALLY OF: OXIDIZING A COAL CHARGE AT A TEMPERATURE BETWEEN 650 AND 850*F. WHEREIN SAID COAL IS SELECTED FROM THE GROUP CONSISTING OF ANTHRACITE AND BITUMINOUS FORMING AN OXIDIZED PRODUCT OF 30 TO 90 WEIGHT PERCENT OF SAID CHARGE; CONTACTING THE SAID OXIDIZED PRODUCT WITH A POLAR COMPOUND SELECTED FROM THE GROUP CONSISTING OF WATER AND AN AQUEOUS SOLUTION OF A VOLATILE ELECTROLYTE; AND DRYING SAID CONTACTED OXIDIZED PRODUCT AT A TEMPERATURE BETWEEN 400 AND 1000*F. IN AN INERT ATMOSPHERE, THEREBY PRODUCING AN ADSORBENT SELECTIVE OF NORMAL AND AROMATIC HYDROCARBONS.
Claim 4
Dependent Claim
102 words
AN IMPROVED PROCESS FOR THE PREPARATION OF A SELECTIVE ADSORBENT WHICH CONSISTS ESSENTIALLY OF: OXIDIZING A COAL CHARGE AT A TEMPERATURE BETWEEN 650 AND 850*F. WHEREIN SAID COAL IS SELECTED FROM THE GROUP CONSISTING OF ANTHRACITE AND BITUMINOUS FORMING AN OXIDIZED PRODUCT OF 30 TO 90 WEIGHT PERCENT OF SAID CHARGE; CONTACTING THE SAID OXIDIZED PRODUCT WITH A POLAR COMPOUND SELECTED FROM THE GROUP CONSISTING OF WATER AND AN AQUEOUS SOLUTION OF A VOLATILE ELECTROLYTE; AND DRYING SAID CONTACTED OXIDIZED PRODUCT AT A TEMPERATURE BETWEEN 400 AND 1000*F. IN AN INERT ATMOSPHERE, THEREBY PRODUCING AN ADSORBENT SELECTIVE OF NORMAL AND AROMATIC HYDROCARBONS.
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |