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US2441069A
Expired / Lapsed
US
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2-amino-methyl-indenes and their production
Assignee: CIBA PHARM PROD Inc
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Filing: 1944-05-15
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Granted: 1948-05-04
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Expires: 1964-05-15
Abstract
No abstract record available.
Inventors
- 👤 Hoffmann Karl
- 👤 Schellenberg Henri
- 👤 Miescher Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:30
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; C07D295/03; C07D295/04; C07D295/08; C07D295/096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2265174A
Cited
US2188870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |