US3213113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of aldehydes from ethylene oxide
Assignee: —
•
Filing: —
•
Granted: 1965-10-19
•
Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:28
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/32; C07C; C07C29/00; C07C29/74; C07C29/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE PROCESS OF REMOVING ALADHYDES SELECTED FROM THE CLASS CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE FROM ETHYLENE OXIDE WHICH CONSISTS OF TREATING LIQUID ETHYLENE OXIDE AT A TEMPERATURE RANGING FROM-10* TO 10*C. WITH A REDUCING AMOUNT RANGING BETWEEN ABOUT 50% AND 100% OF THE AMOUNT OF AN ALKALI METAL BOROHYDRIDE THEORETICALLY REQUIRED TO REDUCE THE SAID ALDEHYDES TO THE CORRESPONDING ALCOHOLS FOR A PERIOD OF TIME RANGING FROM 5 TO 60 MINUTES, AND THEREUPON NEUTRALIZING THE TREATED LIQUID ETHYLENE OXIDE WITH AN ORGANIC CARBOXYLIC ACID OF FROM 1 TO 3 CARBON ATOMS AND REMOVING THE ALKALI METAL SALT OF SAID ACID AND THE BORATE BY FILTRATION.
Claim 2
Dependent Claim
105 words
THE PROCESS OF REMOVING ALADHYDES SELECTED FROM THE CLASS CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE FROM ETHYLENE OXIDE WHICH CONSISTS OF TREATING LIQUID ETHYLENE OXIDE AT A TEMPERATURE RANGING FROM-10* TO 10*C. WITH A REDUCING AMOUNT RANGING BETWEEN ABOUT 50% AND 100% OF THE AMOUNT OF AN ALKALI METAL BOROHYDRIDE THEORETICALLY REQUIRED TO REDUCE THE SAID ALDEHYDES TO THE CORRESPONDING ALCOHOLS FOR A PERIOD OF TIME RANGING FROM 5 TO 60 MINUTES, AND THEREUPON NEUTRALIZING THE TREATED LIQUID ETHYLENE OXIDE WITH AN ORGANIC CARBOXYLIC ACID OF FROM 1 TO 3 CARBON ATOMS AND REMOVING THE ALKALI METAL SALT OF SAID ACID AND THE BORATE BY FILTRATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |