Patent US2851469A successfully refreshed from Google Patents.
US2851469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of ethylene oxide
Assignee: —
•
Filing: —
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Granted: 1958-09-09
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Expires: 1975-09-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:29
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/02; C07C; C07C29/00; C07C29/09; C07C29/12; C07C69/00; C07C69/96; C07D301/03; C07D301/04; C07D301/08; C07D301/10; C07D317/00; C07D317/08; C07D317/10; C07D317/32; C07D317/34; C07D317/36; C07D317/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF MAKING ETHYLENE OXIDE IN GASEOUS MONOMERIC FORM THAT COMPRISES MINGLING CYCLIC ETHYLENE GLYCOL CARBONATE WITH A CATALYTIC QUANTITY OF A HALOGENATED, NONPOLYMERIC HYDROCARBON HAVING A PLURALITY OF HALOGEN SUBSTITUENTS, WHICH IS FREE OF ALIPHATIC UNSATURATION AND HAS A BOILING POINT OF AT LEAST 200*C., AND HEATING THE MASS TO A TEMPERATURE OF AT LEAST 180*C. AND BELOW THE BOILING POINT OF THE HALOGENATED HYDROCARBON AND THE CYCLIC GLYCOL CARBONATE.
Claim 2
Independent Claim
72 words
A METHOD OF MAKING ETHYLENE OXIDE IN GASEOUS MONOMERIC FORM THAT COMPRISES MINGLING CYCLIC ETHYLENE GLYCOL CARBONATE WITH A CATALYTIC QUANTITY OF A HALOGENATED, NONPOLYMERIC HYDROCARBON HAVING A PLURALITY OF HALOGEN SUBSTITUENTS, WHICH IS FREE OF ALIPHATIC UNSATURATION AND HAS A BOILING POINT OF AT LEAST 200*C., AND HEATING THE MASS TO A TEMPERATURE OF AT LEAST 180*C. AND BELOW THE BOILING POINT OF THE HALOGENATED HYDROCARBON AND THE CYCLIC GLYCOL CARBONATE.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |