Patent US3121733A successfully refreshed from Google Patents.
US3121733A
Expired / Lapsed
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Production of carboxylic acid nitriles from lactones
Assignee: BASF SE
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Filing: 1959-08-17
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Granted: 1964-02-18
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Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Schickh Otto Von
- 👤 Rotzoll Rudi-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:17
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A PROCESS FOR THE PRODUCTION OF SATURATED OMEGAHYDROXY CARBOXYLIC ACID NITRILES WHICH COMPRISES: REACTING A LACTONE HAVING THE FORMULA
Claim 2
Dependent Claim
19 words
A PROCESS FOR THE PRODUCTION OF SATURATED OMEGAHYDROXY CARBOXYLIC ACID NITRILES WHICH COMPRISES: REACTING A LACTONE HAVING THE FORMULA
References Cited (Backward Citations)
US2206351A
Cited
US2334192A
Cited
US2375005A
Cited
DE812551C
Cited
US2590986A
Cited
US2827476A
Cited
GB812780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |