Patent US3765689A successfully refreshed from Google Patents.
Patent US2813896A successfully refreshed from Google Patents.
US2813896A
Expired / Lapsed
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Process for preparing organic peracids
Assignee: Bayer AG
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Filing: 1953-12-08
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Granted: 1957-11-19
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Expires: 1973-12-08
Abstract
No abstract record available.
Inventors
- 👤 Krimm Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:03
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/24; C07C407/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
A PROCESS FOR PREPARING ORGANIC PERACIDS WHICH COMPRISES REACTING AT A TEMPERATURE FROM ABOUT -50 TO ABOUT +50*C. CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF MONOCARBOXYLIC AND DICARBOXYLIC ALIPHATIC, CYCLOALIPHATIC AND AROMATIC ACIDS AND ACID ANHYDRIDES THEREOF WITH AQUEOUS HYDROGEN PEROXIDE SOLUTION IN THE PRESENCE OF SULPHURIC ACID IN SUCH A QUANTITY THAT H2SO4 AND H2O ARE A RATIO OF AT LEAST 1 MOL TO 6 MOLS AT THE END OF THE REACTION.
Claim 2
Dependent Claim
74 words
A PROCESS FOR PREPARING ORGANIC PERACIDS WHICH COMPRISES REACTING AT A TEMPERATURE FROM ABOUT -50 TO ABOUT +50*C. CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF MONOCARBOXYLIC AND DICARBOXYLIC ALIPHATIC, CYCLOALIPHATIC AND AROMATIC ACIDS AND ACID ANHYDRIDES THEREOF WITH AQUEOUS HYDROGEN PEROXIDE SOLUTION IN THE PRESENCE OF SULPHURIC ACID IN SUCH A QUANTITY THAT H2SO4 AND H2O ARE A RATIO OF AT LEAST 1 MOL TO 6 MOLS AT THE END OF THE REACTION.
Claim 3
Dependent Claim
2 words
DIPERADIPIC ACID.
Claim 4
Dependent Claim
2 words
DIPERADIPIC ACID.
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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |