US3318955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of formaldehyde
Assignee: BASF SE
•
Filing: 1965-02-24
•
Granted: 1967-05-09
•
Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 Gerloff Ulrich
- 👤 Jahn Juergen
- 👤 Goehre Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:18
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C07C29/15; C07C29/151; C07C29/1512; C07C29/153; C07C45/00; C07C45/002
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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |