US2587468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene oxide process
Assignee: Monsanto Chemicals Ltd
•
Filing: 1948-03-27
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Granted: 1952-02-26
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Expires: 1968-03-27
Abstract
No abstract record available.
Inventors
- 👤 Rudolph L Heider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:02
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0255; B01J31/0257; B01J31/0258; B01J23/00; B01J23/38; B01J23/48; B01J23/50; B01J31/26; C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; C07D301/10; B01J2231/00; B01J2231/70; B01J2231/72; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN THE PRODUCTION OF ETHYLENE OXIDE BY THE CATALTIC OXIDATION OF ETHYLENE WITH OXYGENCONTAINING GASES REACTING IN CONTACT WITH SILVER SURFACES, THE IMPROVEMENT WHICH COMPRISES FEEDING FROM 10 TO 100,000 PARTS PER MILLION ON A VOLUME BASIS OF TRI-SUBSTITUTED ORGANIC PHOSPHATES TO THE SAID REACTION, SAID SUBSTITUENTS OF WHICH CONTAIN FROM 1 TO 8 CARBON ATOMS.
Claim 2
Dependent Claim
56 words
IN THE PRODUCTION OF ETHYLENE OXIDE BY THE CATALTIC OXIDATION OF ETHYLENE WITH OXYGENCONTAINING GASES REACTING IN CONTACT WITH SILVER SURFACES, THE IMPROVEMENT WHICH COMPRISES FEEDING FROM 10 TO 100,000 PARTS PER MILLION ON A VOLUME BASIS OF TRI-SUBSTITUTED ORGANIC PHOSPHATES TO THE SAID REACTION, SAID SUBSTITUENTS OF WHICH CONTAIN FROM 1 TO 8 CARBON ATOMS.
References Cited (Backward Citations)
GB444186A
Cited
US2366725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |