US3535076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cyanogen
Assignee: Evonik Operations GmbH
•
Filing: 1968-02-26
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Granted: 1970-10-20
•
Expires: 1988-02-26
Abstract
No abstract record available.
Inventors
- 👤 Rudolf Fahnenstich
- 👤 Hermann Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:45
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA525871A
Cited
DE1079611B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |