US2432478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of methionine
Assignee: EIDP Inc
•
Filing: 1945-09-26
•
Granted: 1947-12-09
•
Expires: 1965-09-26
Abstract
No abstract record available.
Inventors
- 👤 Herbert S Lecky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:08
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14; C07C319/20; C07C323/00; C07C323/50; C07C323/51; C07C323/57; C07C323/58
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |