US3017426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of phenolic inhibitors from alkenyl monomers
Assignee: Dow Chemical Co
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Filing: 1958-03-03
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Granted: 1962-01-16
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Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Norman R Ruffing
- 👤 James L Amos
- 👤 Vincent D Puzar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:03
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; B; B01; B01J; B01J41/00; B01J41/04; B01J41/05; C07; C07C; C07C7/00; C07C7/12; C08F2/00; C08F2/38; C08F2/42; C08F20/00; C08F20/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD FOR REMOVING A PHENOLIC INHIBITOR FROM AN ALKENYL MONOMER WHICH METHOD COMPRISES CONTACTING AN ALKENYL MONOMER CONTAINING A PHENOLIC INHIBITOR AND A PROPORTION OF WATER WHICH IS BETWEEN 100 P.P.M. AND 700 P.P.M. WITH A STRONGLY BASIC QAUATERNARY AMMONIUM ANION EXCHANGE RESIN IN THE HYDROXIDE FROM CONTAINING BETWEEN 40 AND 60 PERCENT BY WEIGHT OF WATER AND RECOVERING ALKENYL MONOMER FROM WHICH PHENOLIC INHIBITOR HAS BEEN REMOVED.
Claim 2
Independent Claim
69 words
A METHOD FOR REMOVING A PHENOLIC INHIBITOR FROM AN ALKENYL MONOMER WHICH METHOD COMPRISES CONTACTING AN ALKENYL MONOMER CONTAINING A PHENOLIC INHIBITOR AND A PROPORTION OF WATER WHICH IS BETWEEN 100 P.P.M. AND 700 P.P.M. WITH A STRONGLY BASIC QAUATERNARY AMMONIUM ANION EXCHANGE RESIN IN THE HYDROXIDE FROM CONTAINING BETWEEN 40 AND 60 PERCENT BY WEIGHT OF WATER AND RECOVERING ALKENYL MONOMER FROM WHICH PHENOLIC INHIBITOR HAS BEEN REMOVED.
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) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |