US2917449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of upgrading a petroleum naphtha
Assignee: Texaco Inc
•
Filing: 1955-01-25
•
Granted: 1959-12-15
•
Expires: 1975-01-25
Abstract
No abstract record available.
Inventors
- 👤 Edward R Christensen
- 👤 Howard V Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:22
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A COMBINATION TREATING OPERATION FOR UPGRADING A HEAVY NAPHTHA BOILING IN THE RANGE 175-425*F. AND CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAIN HYDROCARBONS WHICH COMPRISES SUBJECTING SAID NAPHTHA TO CATALYTIC REFORMING BY CONTACT WITH A REFORMING CATALYST UNDER REFORMING CONDITIONS OF TEMPERATURE AND PRESSURE TO PRODUCE A REFORMATE, SAID REFORMATE CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAIN HYDROCARBONS, FRACTIONATING SAID REFORMATE TO SEPARATE THEREFROM AN OVERHEAD FRACTION CONTAINING C4 AND C5 HYDROCARBONS, CONTACTING THE REMAINING REFORMATE WITH A SOLID ALUMINO-SILICATE MOLECULAR SIEVE SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB ONLY STRAIGHT CHAIN HYDROCARBONS FROM SAID REMAINING REFORMATE, RECOVERING FROM THE AFORESAID SELECTIVE ADSORPTION OPERATION OF RESULTING TREATED REFORMATE SUBSTANTIALLY FREE OS STRAIGHT CHAN HYDROCARBONS AND BLENDING SAID RESULTING TREATED REFORMATE WITH SAID OVERHEAD FRACTION.
Claim 2
Dependent Claim
135 words
A COMBINATION TREATING OPERATION FOR UPGRADING A HEAVY NAPHTHA BOILING IN THE RANGE 175-425*F. AND CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAIN HYDROCARBONS WHICH COMPRISES SUBJECTING SAID NAPHTHA TO CATALYTIC REFORMING BY CONTACT WITH A REFORMING CATALYST UNDER REFORMING CONDITIONS OF TEMPERATURE AND PRESSURE TO PRODUCE A REFORMATE, SAID REFORMATE CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAIN HYDROCARBONS, FRACTIONATING SAID REFORMATE TO SEPARATE THEREFROM AN OVERHEAD FRACTION CONTAINING C4 AND C5 HYDROCARBONS, CONTACTING THE REMAINING REFORMATE WITH A SOLID ALUMINO-SILICATE MOLECULAR SIEVE SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB ONLY STRAIGHT CHAIN HYDROCARBONS FROM SAID REMAINING REFORMATE, RECOVERING FROM THE AFORESAID SELECTIVE ADSORPTION OPERATION OF RESULTING TREATED REFORMATE SUBSTANTIALLY FREE OS STRAIGHT CHAN HYDROCARBONS AND BLENDING SAID RESULTING TREATED REFORMATE WITH SAID OVERHEAD FRACTION.
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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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |