US2441867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of producing 2-(alpha-naphthylmethyl)-imidazoline
Assignee: Recip AB
•
Filing: 1946-10-26
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Granted: 1948-05-18
•
Expires: 1966-10-26
Abstract
No abstract record available.
Inventors
- 👤 Carlsson Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:12
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |