US2909574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alkylated aromatic hydrocarbons
Assignee: Texaco Inc
•
Filing: 1958-01-29
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Granted: 1959-10-20
•
Expires: 1978-01-29
Abstract
No abstract record available.
Inventors
- 👤 Robert A Woodle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:15
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C7/00; C07C7/12; C07C7/13; C07C2521/00; C07C2521/12; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/26; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A METHOD OF MANUFACTURING AN ALKYLATED AROMATIC HYDROCARBON WHICH COMPRISES CONTACTING A GASEOUS STREAM CONTAINING A STRAIGHT CHAIN OLEFINIC HYDROCARBON AND OTHER HYDROCARBONS WITH AN ALUMINO-SILICATE MOLECULAR SIEVE TYPE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB SAID STRAIGHT CHAIN OLEFINIC HYDROCARBONS FROM SAID GASEOUS STREAM, CONTACTING THE RESULTING ADSORBENT, NOW CONTAINING SUBSTANTIALLY ONLY STRAIGHT CHAIN OLEFINIC HYDROCARBON ADSORBED THEREIN, WITH A MONOCYCLIC AROMATIC HYDROCARBON UNDER CONDITIONS TO EFFECT DESORPTION OF THE ASDORPTION STRAIGHT CHAIN OLEFINIC HYDROCARBON, CONTACTING THE RESULTING DESORPTION EFFLUENT COMPRISING SAID AROMATIC HYDROCARBON AND THE RESULTING DESORBED STRAIGHT CHAIN OLEFINIC HYDROCARBON WITH AN ALKYLATION CATALYST UNDER SUITABLE CONDITIONS TO EFFECT ALKYLATION OF SAID AROMATIC HYDROCARBONS BY SAID STRAIGHT CHAIN OLEFINIC HYDROCARBONS.
Claim 2
Independent Claim
123 words
A METHOD OF MANUFACTURING AN ALKYLATED AROMATIC HYDROCARBON WHICH COMPRISES CONTACTING A GASEOUS STREAM CONTAINING A STRAIGHT CHAIN OLEFINIC HYDROCARBON AND OTHER HYDROCARBONS WITH AN ALUMINO-SILICATE MOLECULAR SIEVE TYPE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB SAID STRAIGHT CHAIN OLEFINIC HYDROCARBONS FROM SAID GASEOUS STREAM, CONTACTING THE RESULTING ADSORBENT, NOW CONTAINING SUBSTANTIALLY ONLY STRAIGHT CHAIN OLEFINIC HYDROCARBON ADSORBED THEREIN, WITH A MONOCYCLIC AROMATIC HYDROCARBON UNDER CONDITIONS TO EFFECT DESORPTION OF THE ASDORPTION STRAIGHT CHAIN OLEFINIC HYDROCARBON, CONTACTING THE RESULTING DESORPTION EFFLUENT COMPRISING SAID AROMATIC HYDROCARBON AND THE RESULTING DESORBED STRAIGHT CHAIN OLEFINIC HYDROCARBON WITH AN ALKYLATION CATALYST UNDER SUITABLE CONDITIONS TO EFFECT ALKYLATION OF SAID AROMATIC HYDROCARBONS BY SAID STRAIGHT CHAIN OLEFINIC 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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |