US3668266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium mordenite separation of para-xylene
Assignee: Mobil Oil AS
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Filing: 1969-11-26
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Granted: 1972-06-06
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Expires: 1989-11-26
Abstract
Abstract An improved separation of para-xylene from a mixture of parameta-xylene is achieved by passing the mixture through an adsorption zone of aluminosilicate with a crystalline structure of sodium mordenite for a relatively short adsorption period. The para-xylene is preferentially sorbed.
Inventors
- 👤 Nai Yuen Chen
- 👤 Stanley J Lucki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:31
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; C07C7/13
Claims Analysis
Total Claims: 0
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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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |