US2636906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of ethylene oxide to valuable products
Assignee: Wyeth Holdings LLC
•
Filing: 1948-03-05
•
Granted: 1953-04-28
•
Expires: 1968-03-05
Abstract
No abstract record available.
Inventors
- 👤 Harold S Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:06
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/18; C07C31/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
THE METHOD WHICH INCLUDES PASSING ETHYLENE OXIDE INTO AN AQUEOUS HYDROCHLORIC ACID UNTIL A NEUTRAL SOLUTION OF ETHYLENE CHLOROHYDRIN AND ETHYLENE GLYCOL IS FORMED.
References Cited (Backward Citations)
US1954395A
Cited
US2103849A
Cited
US2188254A
Cited
US2255411A
Cited
US2378104A
Cited
US2325576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |