US3551423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of amides substituted on the nitrogen atom
Assignee: BASF SE
•
Filing: 1967-08-18
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Granted: 1970-12-29
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Expires: 1987-08-18
Abstract
No abstract record available.
Inventors
- 👤 Harro Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:49
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/06; C07D239/08; C07D239/10; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/12; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/32; D; D06; D06M; D06M13/00; D06M13/322; D06M13/382
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |