US2861107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of cumene hydroperoxide
Assignee: Mitsubishi Edogawa Kagaku KK
•
Filing: 1956-08-17
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Granted: 1958-11-18
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Expires: 1976-08-17
Abstract
No abstract record available.
Inventors
- 👤 Hiratsuka Kizo
- 👤 Yonemitsu Ei Ichi
- 👤 Itabashi Takashi
- 👤 Keimatsu Shotaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:15
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
52 words
IN A PROCESS FOR THE PRODUCTION OF CUMENE HYDROPEROXIDE WHEREIN CUMENE IS OXIDIZED BY A GAS SELECTED FROM THE GROUP CONSISTING OF MOLECULAR OXYGEN AND OXYGENOUS GASES AT A N ELEVATED TEMPERATURE, A STEP OF ADDING THERETO EHTYLENEDIAMINE TETRAACETIC ACID IN A RATIO UP TO 1 PERCENT OF CUMENE USED AS ACCELERATOR.
Claim 2
Dependent Claim
52 words
IN A PROCESS FOR THE PRODUCTION OF CUMENE HYDROPEROXIDE WHEREIN CUMENE IS OXIDIZED BY A GAS SELECTED FROM THE GROUP CONSISTING OF MOLECULAR OXYGEN AND OXYGENOUS GASES AT A N ELEVATED TEMPERATURE, A STEP OF ADDING THERETO EHTYLENEDIAMINE TETRAACETIC ACID IN A RATIO UP TO 1 PERCENT OF CUMENE USED AS ACCELERATOR.
References Cited (Backward Citations)
US2734086A
Cited
US2674629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |