Patent US2633476A successfully refreshed from Google Patents.
US2633476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aromatic hydroperoxides
Assignee: Shell Development Co
•
Filing: 1952-03-04
•
Granted: 1953-03-31
•
Expires: 1972-03-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank H Seubold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:16
CPC Classifications
C; C07; C07C; C07C407/00; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C409/10; C07C7/00; C07C7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A PROCESS FOR THE PRODUCTION OF AN ARALKYL HYDROPEROXIDE-CONTAINING REACTION MIXTURE BY THE REACTION OF AN ARALKYL HYDROCARBON WITH OXYGEN THE IMPROVEMENT WHICH COMPRISES PASSING SAID ARALKYL HYDROCARBON THROUGH TWO CONSECUTIVE PRETREATING ZONES, AND CONTACTING SAID ARALKYL HYDROCARBON WITH A STRONG MINERAL ACID IN ONE OF SAID ZONES AND WITH AN ALKALI METAL IN ANOTHER OF SAID ZONES.
Claim 2
Dependent Claim
59 words
IN A PROCESS FOR THE PRODUCTION OF AN ARALKYL HYDROPEROXIDE-CONTAINING REACTION MIXTURE BY THE REACTION OF AN ARALKYL HYDROCARBON WITH OXYGEN THE IMPROVEMENT WHICH COMPRISES PASSING SAID ARALKYL HYDROCARBON THROUGH TWO CONSECUTIVE PRETREATING ZONES, AND CONTACTING SAID ARALKYL HYDROCARBON WITH A STRONG MINERAL ACID IN ONE OF SAID ZONES AND WITH AN ALKALI METAL IN ANOTHER OF SAID ZONES.
References Cited (Backward Citations)
GB610293A
Cited
US2547938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |