US2768196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of omega-halogen carboxylic acid nitriles
Assignee: Evonik Operations GmbH
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Filing: 1954-03-29
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Granted: 1956-10-23
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Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Huemer Hans
- 👤 Schulz Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:49
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30; C07C255/00; C07C255/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR THE PRODUCTION OF OMEGA-HALOGEN CARBOXYLIC ACID NITRILES WHICH COMPRISES REACTING A CYANOGEN HALIDE SELECTED FROM THE GROUP CONSISTING OF CYANOGEN CHLROIDE AND CYANOGEN BROMIDE WITH AN ALIPHATIC OLEFIN IN THE PRESENCE OF AN ALIPHATIC AZO COMPOUND AS A CATALYST.
Claim 2
Dependent Claim
42 words
A PROCESS FOR THE PRODUCTION OF OMEGA-HALOGEN CARBOXYLIC ACID NITRILES WHICH COMPRISES REACTING A CYANOGEN HALIDE SELECTED FROM THE GROUP CONSISTING OF CYANOGEN CHLROIDE AND CYANOGEN BROMIDE WITH AN ALIPHATIC OLEFIN IN THE PRESENCE OF AN ALIPHATIC AZO COMPOUND AS A CATALYST.
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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |