US2206883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic-aliphatic acetals
Assignee: IG Farbenindustrie AG
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Filing: 1937-03-06
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Granted: 1940-07-09
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Expires: 1957-03-06
Abstract
No abstract record available.
Inventors
- 👤 Desamarl Kurt
- 👤 Hebermehl Reinhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:50
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-07-09 | 1944-01-08 | 1944-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-09 | 1948-01-08 | 1948-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-09 | 1952-01-08 | 1952-07-09 | $7700.00 | Window Closed / Lapsed |