US2731480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of epsilon-acyl lysines
Assignee: Bayer AG
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Filing: 1954-03-18
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Granted: 1956-01-17
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Expires: 1974-03-18
Abstract
No abstract record available.
Inventors
- 👤 Kruckenberg Winfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:31
CPC Classifications
A; A23; A23K; A23K20/00; A23K20/10; A23K20/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN THE PROCESS FOR THE PRODUCTION OF AN A-ACYL LYSINE BY CHLORINATING AN N-ACYL-E-AMINO CAPROIC ACID, IN WHICH THE ACYL GROUP IS AN ALIPHATIC ACYL GROUP, AND THEREAFTER AMINATING THE CHLORINATED PRODUCT, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE CHLORINATION, USING A WATERFREE SALT OF THE N-ACYL-E-AMINO CAPROIC ACID AS THE STARTING MATERIAL AND SULFURYL CHLORIDE IN THE PRESENCE OF THIONYL CHLORIDE AS THE CHLORINATING AGENT.
Claim 2
Dependent Claim
65 words
IN THE PROCESS FOR THE PRODUCTION OF AN A-ACYL LYSINE BY CHLORINATING AN N-ACYL-E-AMINO CAPROIC ACID, IN WHICH THE ACYL GROUP IS AN ALIPHATIC ACYL GROUP, AND THEREAFTER AMINATING THE CHLORINATED PRODUCT, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE CHLORINATION, USING A WATERFREE SALT OF THE N-ACYL-E-AMINO CAPROIC ACID AS THE STARTING MATERIAL AND SULFURYL CHLORIDE IN THE PRESENCE OF THIONYL CHLORIDE AS THE CHLORINATING AGENT.
References Cited (Backward Citations)
US2519038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |