US2634272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-benzyl-hexahydroisoquinolines and preparation thereof
Assignee: F Hoffmann La Roche AG
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Filing: 1951-09-10
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Granted: 1953-04-07
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Expires: 1971-09-10
Abstract
No abstract record available.
Inventors
- 👤 Hellerbach Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:08
CPC Classifications
C; C07; C07D; C07D221/00; C07D221/02; C07D221/22; C07D221/28; C07C; C07C211/00; C07C211/01; C07C211/25; C07D217/00; C07D217/02; C07D217/10; C07D217/12; C07D217/18; C07D217/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
1 words
1-BENZYL-3,4,5,6,7,8-HEXAHYDROISOQUINOLINE.
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) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |