Patent US2820832A successfully refreshed from Google Patents.
US2820832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydroperoxides
Assignee: Imperial Chemical Industries Ltd
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Filing: 1954-08-03
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Granted: 1958-01-21
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Expires: 1974-08-03
Abstract
No abstract record available.
Inventors
- 👤 Berneis Kurt Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:17
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C409/12; C07C407/00; C07C409/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A PROCESS FOR THE PRODUCTION OF HYDROPEROXIDES WHICH COMPRISES CONTACTING AN AROMATIC HYDROCARBON CONTAINING THE GROUPING:
Claim 2
Dependent Claim
16 words
A PROCESS FOR THE PRODUCTION OF HYDROPEROXIDES WHICH COMPRISES CONTACTING AN AROMATIC HYDROCARBON CONTAINING THE GROUPING:
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) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |