US2697121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of cumene hydroperoxide
Assignee: Rhone Poulenc SA
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Filing: 1952-04-11
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Granted: 1954-12-14
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Expires: 1972-04-11
Abstract
No abstract record available.
Inventors
- 👤 Mosnier Michel Marius
- 👤 Fournet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:18
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C409/10; C07C407/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PROCESS FOR THE PREPARATION OF CUMENE HYDROPEROXIDE WHICH COMPRISES HEATING CUMENE WITH MOLECULAR OXYGEN IN THE PRESENCE OF 0.08 TO 1.0 G. OF BENZOIC ACID PER KILOGRAM OF CUMENE.
Claim 2
Dependent Claim
30 words
A PROCESS FOR THE PREPARATION OF CUMENE HYDROPEROXIDE WHICH COMPRISES HEATING CUMENE WITH MOLECULAR OXYGEN IN THE PRESENCE OF 0.08 TO 1.0 G. OF BENZOIC ACID PER KILOGRAM OF CUMENE.
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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |