Patent US3244619A successfully refreshed from Google Patents.
US3244619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation process
Assignee: Texaco Inc
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Filing: 1964-02-10
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Granted: 1966-04-05
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Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 William F Franz
- 👤 Junction Hopewell
- 👤 Howard V Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:39
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
A METHOD OF TREATING A GASEOUS PETROLEUM FRACTION CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAIN HYDROCARBONS WHICH COMPRISES INTRODUCING SAID GASEOUS PETROLEUM FRACTION INTO AN ADSORPTION ZONE CONTAINING THEREIN AN ALUMINO-SILICATE MOLECULAR SIEVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB STRAIGHT CHAIN HYDROCARBONS FROM SAID PETROLEUM FRACTION, CONTINUING THE INTRODUCTION OF SAID GASEOUS PETROLEUM FRACTION INTO SAID ADSORPTION ZONE TO SATURATE SAID ADSORBENT WITH STRAIGHT CHAIN HYDROCARBONS, SAID ADSORPTION OF STRAIGHT CHAIN HYDROCARBONS FROM SAID PETROLEUM FRACTION BY MEANS OF SAID ADSORBENT BEING CARRIED OUT AT AN ELEVATED TEMPERATURE AND AT A SUPER ATMOSPHERIC PRESSURE, DISCONTINUING THE INTRODUCTION OF SAID GASEOUS PETROLEUM FRACTION INTO SAID ADSORPTION ZONE, REMOVING FROM SAID ADSORPTION ZONE A RESULTING TREATED PETROLEUM FRACTION CONTAINING SUBSTANTIALLY ONLY NONSTRAIGHT CHAIN HYDROCARBONS BY THE STEP WHICH CONSISTS IN RAPIDLY DEPRESSURING SAID ADSORPTION ZONE TO A REDUCED PRESSURE NOT BELOW ATMOSPHERIC PRESSURE, AND THEN DESORBING THE ADSORBED STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT WITHIN SAID ADSORPTION ZONE AT SAID REDUCED PRESSURE, THE DESORPTION OF SAID STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT BEING CARRIED OUT UNDER CONDITIONS SUCH THAT SUBSTANTIALLY ALL OF THE STRAIGHT CHAIN HYDROCARBONS ADSORBED BY SAID ADSORBENT ARE DESORBED THEREFROM, THE TEMPERATURE OF SAID ADSORBENT DURING THE DEPRESSURING AND DESORPTION OPERATIONS BEING SUBSTANTIALLY UNCHANGED.
Claim 2
Independent Claim
216 words
A METHOD OF TREATING A GASEOUS PETROLEUM FRACTION CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAIN HYDROCARBONS WHICH COMPRISES INTRODUCING SAID GASEOUS PETROLEUM FRACTION INTO AN ADSORPTION ZONE CONTAINING THEREIN AN ALUMINO-SILICATE MOLECULAR SIEVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB STRAIGHT CHAIN HYDROCARBONS FROM SAID PETROLEUM FRACTION, CONTINUING THE INTRODUCTION OF SAID GASEOUS PETROLEUM FRACTION INTO SAID ADSORPTION ZONE TO SATURATE SAID ADSORBENT WITH STRAIGHT CHAIN HYDROCARBONS, SAID ADSORPTION OF STRAIGHT CHAIN HYDROCARBONS FROM SAID PETROLEUM FRACTION BY MEANS OF SAID ADSORBENT BEING CARRIED OUT AT AN ELEVATED TEMPERATURE AND AT A SUPER ATMOSPHERIC PRESSURE, DISCONTINUING THE INTRODUCTION OF SAID GASEOUS PETROLEUM FRACTION INTO SAID ADSORPTION ZONE, REMOVING FROM SAID ADSORPTION ZONE A RESULTING TREATED PETROLEUM FRACTION CONTAINING SUBSTANTIALLY ONLY NONSTRAIGHT CHAIN HYDROCARBONS BY THE STEP WHICH CONSISTS IN RAPIDLY DEPRESSURING SAID ADSORPTION ZONE TO A REDUCED PRESSURE NOT BELOW ATMOSPHERIC PRESSURE, AND THEN DESORBING THE ADSORBED STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT WITHIN SAID ADSORPTION ZONE AT SAID REDUCED PRESSURE, THE DESORPTION OF SAID STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT BEING CARRIED OUT UNDER CONDITIONS SUCH THAT SUBSTANTIALLY ALL OF THE STRAIGHT CHAIN HYDROCARBONS ADSORBED BY SAID ADSORBENT ARE DESORBED THEREFROM, THE TEMPERATURE OF SAID ADSORBENT DURING THE DEPRESSURING AND DESORPTION OPERATIONS BEING SUBSTANTIALLY UNCHANGED.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |