Patent US2958708A successfully refreshed from Google Patents.
US2958708A
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Separation of isomeric halogenated aromatic compounds
Assignee: Union Oil Company of California
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Filing: 1959-03-23
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Granted: 1960-11-01
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Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fleck
- 👤 Carlyle G Wight
- 👤 Edward L Wiseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:09
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/487; C07C17/00; C07C17/38; C07C17/389; C07C7/00; C07C7/12; C07C7/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
TH PROCESS FOR TREATING A FLUID MIXTURE COMPRISING AT LEAST TWO ISOMERIC COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF DI-HALO-BENZENES, MONO-HALO-TOLUNES AND MONO-HALO-NAPHTHALENES IN WHICH THE HALOGEN IS SELECTED FROM THE CLASS CONSISTING OF BROMINE AND CHLORINE, WHICH PROCESS COMPRISES CONTACTING SAID MIXTURE WITH A SOLID GRANULAR ADSORBENT CONSISTING ESSENTIALLY OF A PARTIALLY DEHYDRATED CRYSTALLINE ZEOLITIC SODIUM METALLO ALUMINO SILICATE HAVING PORES OF SUBSTANTIALLY UNIFORM DIAMETER BETWEEN ABOUT 7 A. AND ABOUT 13 . WHEREBY THERE IS OBTAINED A RICH ADSORBENT CONTAINING ADSORBED COMPONENTS OF SAID MIXTURE AND A FLUID RAFFINATE PRODUCT COMPRISING THE NON-ADSORBED COMPONENTS OF SAID MIXTURE, AND TREATING SAID RICH ADSORBENT TO REMOVE SAID ADSORBED COMPONENTS THEREFROM AS A FLUID EXTRACT PRODUCT, THE PROPORTION OF SAID ISOMERS IN SAID EXTRACT PRODUCT BEING DIFFERENT FROM THE PROPORTION OF SAID ISOMERS IN SAID RAFFINATE PRODUCT.
Claim 2
Dependent Claim
136 words
TH PROCESS FOR TREATING A FLUID MIXTURE COMPRISING AT LEAST TWO ISOMERIC COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF DI-HALO-BENZENES, MONO-HALO-TOLUNES AND MONO-HALO-NAPHTHALENES IN WHICH THE HALOGEN IS SELECTED FROM THE CLASS CONSISTING OF BROMINE AND CHLORINE, WHICH PROCESS COMPRISES CONTACTING SAID MIXTURE WITH A SOLID GRANULAR ADSORBENT CONSISTING ESSENTIALLY OF A PARTIALLY DEHYDRATED CRYSTALLINE ZEOLITIC SODIUM METALLO ALUMINO SILICATE HAVING PORES OF SUBSTANTIALLY UNIFORM DIAMETER BETWEEN ABOUT 7 A. AND ABOUT 13 . WHEREBY THERE IS OBTAINED A RICH ADSORBENT CONTAINING ADSORBED COMPONENTS OF SAID MIXTURE AND A FLUID RAFFINATE PRODUCT COMPRISING THE NON-ADSORBED COMPONENTS OF SAID MIXTURE, AND TREATING SAID RICH ADSORBENT TO REMOVE SAID ADSORBED COMPONENTS THEREFROM AS A FLUID EXTRACT PRODUCT, THE PROPORTION OF SAID ISOMERS IN SAID EXTRACT PRODUCT BEING DIFFERENT FROM THE PROPORTION OF SAID ISOMERS IN SAID RAFFINATE PRODUCT.
References Cited (Backward Citations)
US2882243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |