US3283015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of diols from alcohols using zeolites
Assignee: ConocoPhillips Co
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Filing: 1963-08-26
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Granted: 1966-11-01
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Charles M Starks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:37
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/48; C07C29/50; C07C29/54; C07C29/74; C07C29/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PROCESS FOR REMOVING ALKANDIOLS FROM ADMIXTURE WITH ALKANOLS, WHICH ALKANOLS HAVE AT LEAST 5 CARBON ATOMS, WHICH PROCESS COMPRISES: CONTACTING SAID MIXTURE IN THE LIQUID STATE WITH CRYSTALLINE ZEOLITE SORBENT HAVING A PORE SIZE OF ABOUT 4-20 ANGSTROMS; AND SEPARATING SORBENT FROM A LIQUID ALKANOL PRODUCT OF DECREASED ALKANDIOL CONTENT.
Claim 2
Dependent Claim
51 words
A PROCESS FOR REMOVING ALKANDIOLS FROM ADMIXTURE WITH ALKANOLS, WHICH ALKANOLS HAVE AT LEAST 5 CARBON ATOMS, WHICH PROCESS COMPRISES: CONTACTING SAID MIXTURE IN THE LIQUID STATE WITH CRYSTALLINE ZEOLITE SORBENT HAVING A PORE SIZE OF ABOUT 4-20 ANGSTROMS; AND SEPARATING SORBENT FROM A LIQUID ALKANOL PRODUCT OF DECREASED ALKANDIOL CONTENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |