Patent US2886509A successfully refreshed from Google Patents.
US2886509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Naphtha treating process
Assignee: Texaco Inc
•
Filing: 1955-10-17
•
Granted: 1959-05-12
•
Expires: 1975-10-17
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 13:50
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROCESS FOR TREATING A HYDROCARBON FRACTION BOILING IN THE RANGE 40-225* F., SAID FRACTION CONTAINING STRAIGHT CHAIN AND NON-STRAIGHT CHAIN HYDROCARBONS, SAID STRAIGHT CHAIN HYDROCARBONS INCLUDING N-HEXANE, N-HEPTANE AND N-OCTANE, SAID NON-STRAIGHT CHAIN HYDROCARBONS COMPRISING ISOPARAFFNIC, NAPHTHENIC AND AROMATIC HYDROCARBONS, WHICH COMPRISES CONTACTING SAID FRACTION IN THE GASEOUS PHASE WITH A SOLID ALUMINO-SILICATE MOLECULAR SIEVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB ONLY THE STRAIGHT CHAIN HYDROCARBONS FROM SAID FRACTION, DESORBING THE ADSORBED STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSOBENT BY CONTACT WITH GASEOUS HYDROGEN, ISOMERIZING THE RESULTING DE-
Claim 2
Dependent Claim
99 words
A PROCESS FOR TREATING A HYDROCARBON FRACTION BOILING IN THE RANGE 40-225* F., SAID FRACTION CONTAINING STRAIGHT CHAIN AND NON-STRAIGHT CHAIN HYDROCARBONS, SAID STRAIGHT CHAIN HYDROCARBONS INCLUDING N-HEXANE, N-HEPTANE AND N-OCTANE, SAID NON-STRAIGHT CHAIN HYDROCARBONS COMPRISING ISOPARAFFNIC, NAPHTHENIC AND AROMATIC HYDROCARBONS, WHICH COMPRISES CONTACTING SAID FRACTION IN THE GASEOUS PHASE WITH A SOLID ALUMINO-SILICATE MOLECULAR SIEVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB ONLY THE STRAIGHT CHAIN HYDROCARBONS FROM SAID FRACTION, DESORBING THE ADSORBED STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSOBENT BY CONTACT WITH GASEOUS HYDROGEN, ISOMERIZING THE RESULTING DE-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |