US2802025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of lower carboxylic peracids
Assignee: Evonik Operations GmbH
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Filing: 1953-10-26
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Granted: 1957-08-06
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Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 Weitbrecht Gerhard
- 👤 Muller Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:21
CPC Classifications
C; C07; C07C; C07C407/00; C07C407/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
IN A PROCESS FOR THE RECOVERY OF A LOWER ALIPHATIC PERCARBOXYLIC ACID BY VACUUM DISTILLATION OF ITS DILUTE ADMIXTURES WITH WATER CONTAINING UP TO ABOUT 30% OF LOWER ALIPHATIC PERCARBOXYLIC ACID, THE STEP WHICH COMPRISES CARRYING OUT THE DISTILLATION OF SUCH AQUEOUS ADMIXTURE IN THE PRESENCE OF A WATER BINDING AGENT IN A QUANTITY WHICH IS AT LEAST 100% OF THE QUANTITY OF WATER PRESENT IN SUCH ADMIXTURE.
Claim 2
Dependent Claim
68 words
IN A PROCESS FOR THE RECOVERY OF A LOWER ALIPHATIC PERCARBOXYLIC ACID BY VACUUM DISTILLATION OF ITS DILUTE ADMIXTURES WITH WATER CONTAINING UP TO ABOUT 30% OF LOWER ALIPHATIC PERCARBOXYLIC ACID, THE STEP WHICH COMPRISES CARRYING OUT THE DISTILLATION OF SUCH AQUEOUS ADMIXTURE IN THE PRESENCE OF A WATER BINDING AGENT IN A QUANTITY WHICH IS AT LEAST 100% OF THE QUANTITY OF WATER PRESENT IN SUCH ADMIXTURE.
Claim 3
Dependent Claim
39 words
A PROCESS FOR THE RECOVERY OF A LOWER ALIPHATIC PERCARBOXYLIC ACID WHICH COMPRISES VACUUM DISTILLING A MIXTURE OF A LOWER ALIPHATIC CARBOXYLIC ACID WITH THE SULFURIC ACID CONTAINING RESIDUAL LIQUORS OBTAINED IN THE PRODUCTION OF HYDROGEN PEROXIDE FROM PERSULFATES.
Claim 4
Dependent Claim
39 words
A PROCESS FOR THE RECOVERY OF A LOWER ALIPHATIC PERCARBOXYLIC ACID WHICH COMPRISES VACUUM DISTILLING A MIXTURE OF A LOWER ALIPHATIC CARBOXYLIC ACID WITH THE SULFURIC ACID CONTAINING RESIDUAL LIQUORS OBTAINED IN THE PRODUCTION OF HYDROGEN PEROXIDE FROM PERSULFATES.
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) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |