US2681936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium carbonate in cumene oxidation
Assignee: Honeywell International Inc
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Filing: 1950-08-03
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Granted: 1954-06-22
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Expires: 1970-08-03
Abstract
No abstract record available.
Inventors
- 👤 George G Joris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:54
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C409/10; C07C407/00; C07C407/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
IN A PROCESS FOR OXIDIZING CUMENE TO CUMENE HYDROPEROXIDE IN LIQUID PHASE WITH ELEMENTAL OXYGEN AS OXIDIZING AGENT, THE IMPROVEMENT WHICH COMPRISES PROVIDING AND MAINTAINING SOLID SODIUM CARBONATE IN CONTACT WITH SAID CUMENE AND EMPLOYING TEMPERATURES IN THE RANGE FROM ABOVE 90* C. TO ABOUT 130* C.
Claim 2
Dependent Claim
47 words
IN A PROCESS FOR OXIDIZING CUMENE TO CUMENE HYDROPEROXIDE IN LIQUID PHASE WITH ELEMENTAL OXYGEN AS OXIDIZING AGENT, THE IMPROVEMENT WHICH COMPRISES PROVIDING AND MAINTAINING SOLID SODIUM CARBONATE IN CONTACT WITH SAID CUMENE AND EMPLOYING TEMPERATURES IN THE RANGE FROM ABOVE 90* C. TO ABOUT 130* C.
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) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |