US3030431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactivation of molecular sieves
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-07-09
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Granted: 1962-04-17
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Expires: 1978-07-09
Abstract
No abstract record available.
Inventors
- 👤 Mattox William Judson
- 👤 Jr Charles Newton Kimberlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:40
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3408
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
AN IMPROVED PROCESS FOR UPGRADING A NAPTHA CONTAINING STRAIGHT CHAIN HYDROCARBON IN A ADMIXTURE WITH OTHER HYDROCARBONS WHICH COMPRISES CONTACTING SAID NAPHTHA WITH A ZEOLITIC MOLECULAR SIEVE ADSORBENT IN AN ADSORPTION ZONE AT TEMPERATURES IN THE RANGE OF 200* TO 500*F., ADSORBING STRAIGHT CHAIN HYDROCARBONS FROM SAID NAPHTHA IN SAID ZONE, WITHDRAWING FROM SAID ZONE AN UPGRADED NAPHTHA ESSENTIALLY DEPLETED OF STRAIGHT CHAIN HYDROCARBON, CYCLICALLY INTERRUPTING THE FLOW OF NAPHTHA FEED INTO SAID ZONE AND DESORBING STRAIGHT CHAIN HYDROCARBONS FROM SAID MOLECULAR SIEVE ADSORBENT BY PASSING INTO SAID ZONE A GASEOUS OLEFIN AT TEMPERATURES IN THE RANGE OF 200* TO 500*F. AND REMOVING THEREFROM A
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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |