US3373180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification process
Assignee: Monsanto Co
•
Filing: 1966-06-22
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Granted: 1968-03-12
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Expires: 1986-06-22
Abstract
No abstract record available.
Inventors
- 👤 Glass John Arnold
- 👤 Wilbert H Urry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:35
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/16; B; B01; B01J; B01J39/00; B01J39/04; C07; C07C; C07C29/00; C07C29/74; C07C29/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE REMOVAL OF IRON CARBONYL IMPURITIES FROM AN ALKANOL STREAM CONTAINING SUCH IMPURITIES, SAID ALKANOL HAVING FROM 1 TO 15 CARBON ATOMS, WHICH PROCESS COMPRISES PASSING SAID STREAM AT A TEMPERATURE OF FROM ABOUT 0*C. TO ABOUT 120*C. THROUGH A RESIN BED, SAID RESIN BED HAVING BEEN PREPARED BY REPLACING AT LEAST A PORTION OF THE REPLACEABLE CATIONS IN A EXCHANGE RESIN WITH FERRIC IONS.
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE REMOVAL OF IRON CARBONYL IMPURITIES FROM AN ALKANOL STREAM CONTAINING SUCH IMPURITIES, SAID ALKANOL HAVING FROM 1 TO 15 CARBON ATOMS, WHICH PROCESS COMPRISES PASSING SAID STREAM AT A TEMPERATURE OF FROM ABOUT 0*C. TO ABOUT 120*C. THROUGH A RESIN BED, SAID RESIN BED HAVING BEEN PREPARED BY REPLACING AT LEAST A PORTION OF THE REPLACEABLE CATIONS IN A EXCHANGE RESIN WITH FERRIC IONS.
References Cited (Backward Citations)
DE1101383B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |