US3079428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of organic liquids containing acid impurities
Assignee: Monsanto Chemicals Ltd
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Filing: 1959-10-20
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Granted: 1963-02-26
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Expires: 1979-10-20
Abstract
No abstract record available.
Inventors
- 👤 Baer Massimo
- 👤 Michael F Vignale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:37
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; B; B01; B01J; B01J39/00; B01J39/04; B01J41/00; B01J41/08; B01J41/12; B01J41/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR PURIFYING AN ORGANIC LIQUID OF MORE HIGHLY ACIDIC IMPURITIES WHICH COMPRISES CONTACTING THE LIQUID WITH AN INSOLUBLE POLYMERIC ANIONIC MATERIAL WHICH IS INERT TO THE LIQUID, SAID ANIONIC MATERIAL BEING A SALT OF A METAL OF THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS WITH AN INSOLUBLE, CROSS-LINKED POLYMER CONTAINING A PLURALITY OF UNITS CAPABLE OF REACTING WITH SAID METAL TO FORM AN ANNION WHOSE CONJUGATE ACID HAS A PKA VALUE AT LEAST AS HIGH AS 16.
Claim 2
Dependent Claim
82 words
A PROCESS FOR PURIFYING AN ORGANIC LIQUID OF MORE HIGHLY ACIDIC IMPURITIES WHICH COMPRISES CONTACTING THE LIQUID WITH AN INSOLUBLE POLYMERIC ANIONIC MATERIAL WHICH IS INERT TO THE LIQUID, SAID ANIONIC MATERIAL BEING A SALT OF A METAL OF THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS WITH AN INSOLUBLE, CROSS-LINKED POLYMER CONTAINING A PLURALITY OF UNITS CAPABLE OF REACTING WITH SAID METAL TO FORM AN ANNION WHOSE CONJUGATE ACID HAS A PKA VALUE AT LEAST AS HIGH AS 16.
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |