Patent US3408339A successfully refreshed from Google Patents.
US3408339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric scavenging systems
Assignee: Monsanto Co
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Filing: 1963-11-20
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Granted: 1968-10-29
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Baer Massimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:39
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C08F26/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
AN ADDUCT OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS WITH AN INSOLUBLE, CROSS-LINKED INTERPOLYMER COMPRISING IN CHEMICAL COMBINATION (A) FROM ABOUT 30 TO 99% BY WEIGHT OF A VINYLIDENE SCHIFF BASE CONTAINING A HYDROCARBON UNIT SELECTED FROM THE GROUP CONSISTING OF VINYL AND ISOPROPENYL RADICALS, (B) FROM ABOUT 1 TO 20% BY WEIGHT OF A CROSS-LINKING AGENT CONTAINING MULTIPLE ETHYLENIC UNSATURATION, AND (C) FROM ZERO TO ABOUT 70% BY WEIGHT OF AN INTERPOLYMERIZABLE MONOMER.
Claim 2
Dependent Claim
82 words
AN ADDUCT OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS WITH AN INSOLUBLE, CROSS-LINKED INTERPOLYMER COMPRISING IN CHEMICAL COMBINATION (A) FROM ABOUT 30 TO 99% BY WEIGHT OF A VINYLIDENE SCHIFF BASE CONTAINING A HYDROCARBON UNIT SELECTED FROM THE GROUP CONSISTING OF VINYL AND ISOPROPENYL RADICALS, (B) FROM ABOUT 1 TO 20% BY WEIGHT OF A CROSS-LINKING AGENT CONTAINING MULTIPLE ETHYLENIC UNSATURATION, AND (C) FROM ZERO TO ABOUT 70% BY WEIGHT OF AN INTERPOLYMERIZABLE MONOMER.
Claim 3
Dependent Claim
99 words
A PROCESS FOR PURIFYING AN ORGANIC LIQUID OF ACIDIC IMPURITIES WHICH COMPRISES CONTACTING THE ORGANIC LIQUID WITH AN ADDUCT OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS WITH AN INSOLUBLE, CROSS-LINKED INTERPOLYMER COMPRISING IN CHEMICAL COMBINATION (A) FROM ABOUT 30 TO 99% BY WEIGHT OF A VINYLIDENE SCHIFF BASE CONTAINING A HYDROCARBON UNIT SELECTED FROM THE GROUP CONSISTING OF VINYL AND ISOPROPENYL RADICALS, (B) FROM ABOUT 1 TO 20% BY WEIGHT OF A CROSS-LINKING AGENT CONTAINING MULTIPLE ETHYLENIC UNSATURATION, AND (C) FROM ZERO TO ABOUT 70% BY WEIGHT OF AN INTERPOLYMERIZABLE MONOMER.
Claim 4
Dependent Claim
99 words
A PROCESS FOR PURIFYING AN ORGANIC LIQUID OF ACIDIC IMPURITIES WHICH COMPRISES CONTACTING THE ORGANIC LIQUID WITH AN ADDUCT OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS WITH AN INSOLUBLE, CROSS-LINKED INTERPOLYMER COMPRISING IN CHEMICAL COMBINATION (A) FROM ABOUT 30 TO 99% BY WEIGHT OF A VINYLIDENE SCHIFF BASE CONTAINING A HYDROCARBON UNIT SELECTED FROM THE GROUP CONSISTING OF VINYL AND ISOPROPENYL RADICALS, (B) FROM ABOUT 1 TO 20% BY WEIGHT OF A CROSS-LINKING AGENT CONTAINING MULTIPLE ETHYLENIC UNSATURATION, AND (C) FROM ZERO TO ABOUT 70% BY WEIGHT OF AN INTERPOLYMERIZABLE MONOMER.
References Cited (Backward Citations)
GB795963A
Cited
DE1115022B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |