Patent US2818137A successfully refreshed from Google Patents.
US2818137A
Expired / Lapsed
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Adsorptive separation process
Assignee: Texaco Inc
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Filing: 1955-10-24
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Granted: 1957-12-31
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Expires: 1975-10-24
Abstract
No abstract record available.
Inventors
- 👤 Robert C Richmond
- 👤 Lawrence F Marsch
- 👤 Roland F Huhndorff
- 👤 John K Mckinley
- 👤 Hyman D Massin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:34
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3408; C; C07; C07C; C07C7/00; C07C7/12; C07C7/13; C10; C10G; C10G25/00; C10G25/02; C10G25/03; C10G25/12; B01D2253/00; B01D2253/10; B01D2253/104; B01D2253/106; B01D2253/108; B01D2256/00; B01D2256/24; B01D2257/00; B01D2257/70; B01D2257/702; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40088; B01D2259/4009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF SEPARATING STRAIGHT CHAIN HYDROCARBONS FROM NON-STRAIGHT CHAIN HYDROCARBONS CONTAINED IN A VAPOURIZED HYDROCARBON MIXTURE, WHICH COMPRISES SUBJECTING SAID VAPORIZE HYDROCARBON MIXTURE TO CONTACT WITH ACTIVATED ALUMINA, SUBSEQUENTLY CONTACTING THE THUSTREATED HYDROCARBON MIXTURE WITH A SOLID SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB STRAIGHT CHAIN HYDROCARBONS FROM SAID MIXTURE, DESORBING THE ADSORBED STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT AND PERIODICALLY CONTACTING SAID ADSORBENT WITH METHANE AT AN ELEVATED TEMPERATURE OF AT LEAST ABOUT 700* F.
Claim 2
Independent Claim
88 words
A METHOD OF SEPARATING STRAIGHT CHAIN HYDROCARBONS FROM NON-STRAIGHT CHAIN HYDROCARBONS CONTAINED IN A VAPOURIZED HYDROCARBON MIXTURE, WHICH COMPRISES SUBJECTING SAID VAPORIZE HYDROCARBON MIXTURE TO CONTACT WITH ACTIVATED ALUMINA, SUBSEQUENTLY CONTACTING THE THUSTREATED HYDROCARBON MIXTURE WITH A SOLID SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO ADSORB STRAIGHT CHAIN HYDROCARBONS FROM SAID MIXTURE, DESORBING THE ADSORBED STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT AND PERIODICALLY CONTACTING SAID ADSORBENT WITH METHANE AT AN ELEVATED TEMPERATURE OF AT LEAST ABOUT 700* F.
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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |