Patent US2905704A successfully refreshed from Google Patents.
US2905704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of oxidation products with solid adsorbents
Assignee: Sunoco Inc
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Filing: 1953-10-27
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Granted: 1959-09-22
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Expires: 1973-10-27
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hirschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:04
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
METHOD FOR SEPARATING RELATIVELY HIGH MOLECULAR WEIGHT SAPONIFIABLE MATERIAL FROM OTHER CONSTITUENTS OF A PRODUCT MIXTURE OBTAINED BY LIQUID PHASE PARTIAL OXIDATION OF PETROLEUM HYDROCARBONS AND CONTAINING SAPONIFIABLE CONSTITUENTS ONLY OF THE PRODUCTS OBTAINED IN SAID OXIDATION, WHICH COMPRISES; CONTACTING SAID PRODUCT MIXTURE WITH A SOLID GRANULAR OXIDE ADSORBENT;CONTACTING SAID ADSORBENT AND SAID PRODUCT MIXTURE WITH AN ORGANIC DESORBENT HAVING ADSORPTION INDEX FOR SAID ADSORBENT WITHIN THE RANGE FROM 0 TO 200; SEPARATING ORGANIC DESORBENT CONTAINING SAID RELATIVELY HIGH MOLECULAR WEIGHT SAPONIFIABLE MATERIAL IN SOLUTION FROM SAID ADSORBENT; CONTACTING SAID ADSORBENT WITH ADDITIONAL ORGANIC DESORBENT HAVING ADSORPTION INDEX OF AT LEAST 30 AND AT LEAST AS FREAT AS GREAT AS THE FIRST-NAMED ADSORPTION INDEX; AND SEPARATING THE LATTER ORGANIC DESORBENT CONTAINING RELATIVELY LOW MOLECULAR WEIGHT SAPONIFIABLE MATERIAL IN SOLUTION FROM SAID ADSORBENT
Claim 2
Dependent Claim
132 words
METHOD FOR SEPARATING RELATIVELY HIGH MOLECULAR WEIGHT SAPONIFIABLE MATERIAL FROM OTHER CONSTITUENTS OF A PRODUCT MIXTURE OBTAINED BY LIQUID PHASE PARTIAL OXIDATION OF PETROLEUM HYDROCARBONS AND CONTAINING SAPONIFIABLE CONSTITUENTS ONLY OF THE PRODUCTS OBTAINED IN SAID OXIDATION, WHICH COMPRISES; CONTACTING SAID PRODUCT MIXTURE WITH A SOLID GRANULAR OXIDE ADSORBENT;CONTACTING SAID ADSORBENT AND SAID PRODUCT MIXTURE WITH AN ORGANIC DESORBENT HAVING ADSORPTION INDEX FOR SAID ADSORBENT WITHIN THE RANGE FROM 0 TO 200; SEPARATING ORGANIC DESORBENT CONTAINING SAID RELATIVELY HIGH MOLECULAR WEIGHT SAPONIFIABLE MATERIAL IN SOLUTION FROM SAID ADSORBENT; CONTACTING SAID ADSORBENT WITH ADDITIONAL ORGANIC DESORBENT HAVING ADSORPTION INDEX OF AT LEAST 30 AND AT LEAST AS FREAT AS GREAT AS THE FIRST-NAMED ADSORPTION INDEX; AND SEPARATING THE LATTER ORGANIC DESORBENT CONTAINING RELATIVELY LOW MOLECULAR WEIGHT SAPONIFIABLE MATERIAL IN SOLUTION FROM SAID ADSORBENT
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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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |