US2944031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective adsorbent char for separation of straight chain from nonstraight chain hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-09-05
•
Granted: 1960-07-05
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Expires: 1977-09-05
Abstract
No abstract record available.
Inventors
- 👤 Mason Ralph Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:32
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C01; C01B; C01B32/00; C01B32/30; C01B32/306; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN IMPROVED PROCESS FOR PREPARING A SELECTIVE ADSORBENT CHAR HAVING UNIFORM PORES ADAPTED TO ADSORB STRAIGHT CHAIN HYDROCARBONS AND REJECT NON-STRAIGHT CHAIN HYDROCARBONS, WHICH COMPRISES HEATING A CHLORINATED HYDROCARBONACEOUS COMPOSITION WHEREIN THE RATIO OF HYDROGEN TO CHLORINE ATOMS IS 1:1 AND WHICH EVOLVES ON PYROLYSIS A HYDROGEN CHLORIDE COMPRISING GAS TO A TEMPERATURE IN THE RANGE OF ABOUT 400* TO 700*F. WHILE SUSPENDED IN A LIQUID HAVING A BOILING POINT WITHIN THE RANGE OF APPROXIMATELY 400* TO 700* F, PARTIALLY CHARRING SAID HYDROCARBONACEOUS MATERIAL IN SAID LIQUID, MAINTAINING A RESIDENCE TIME OF FROM 30 TO 60 MINUTES, REMOVING SAID CHARRED MATERIAL FROM SAID LIQUID, THEREAFTER HEATING SAID CHARRED MATERIAL TO A TEMPERATURE OF FROM ABOUT 1000* TO 2000*F. AND RECOVERING A SUPERIOR SELECTIVE ADSORBENT CHAR.
Claim 2
Dependent Claim
125 words
AN IMPROVED PROCESS FOR PREPARING A SELECTIVE ADSORBENT CHAR HAVING UNIFORM PORES ADAPTED TO ADSORB STRAIGHT CHAIN HYDROCARBONS AND REJECT NON-STRAIGHT CHAIN HYDROCARBONS, WHICH COMPRISES HEATING A CHLORINATED HYDROCARBONACEOUS COMPOSITION WHEREIN THE RATIO OF HYDROGEN TO CHLORINE ATOMS IS 1:1 AND WHICH EVOLVES ON PYROLYSIS A HYDROGEN CHLORIDE COMPRISING GAS TO A TEMPERATURE IN THE RANGE OF ABOUT 400* TO 700*F. WHILE SUSPENDED IN A LIQUID HAVING A BOILING POINT WITHIN THE RANGE OF APPROXIMATELY 400* TO 700* F, PARTIALLY CHARRING SAID HYDROCARBONACEOUS MATERIAL IN SAID LIQUID, MAINTAINING A RESIDENCE TIME OF FROM 30 TO 60 MINUTES, REMOVING SAID CHARRED MATERIAL FROM SAID LIQUID, THEREAFTER HEATING SAID CHARRED MATERIAL TO A TEMPERATURE OF FROM ABOUT 1000* TO 2000*F. AND RECOVERING A SUPERIOR SELECTIVE ADSORBENT CHAR.
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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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |