US2429262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of hydrogen cyanide
Assignee: Acordis UK Ltd
•
Filing: 1944-12-12
•
Granted: 1947-10-21
•
Expires: 1964-12-12
Abstract
No abstract record available.
Inventors
- 👤 Fallows Leonard
- 👤 Mellers Eric Vernon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:29
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/02; C01C3/0204
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |