US3340254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino methylene ureas
Assignee: BASF SE
•
Filing: 1964-05-19
•
Granted: 1967-09-05
•
Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 Jentzsch Wolfgang
- 👤 Seefelder Matthias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:03
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/46; C07C275/48; C07C275/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3196152A
Cited
US3242209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |