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US1982774A
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Assignee: IG Farbenindustrie AG
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Filing: 1930-04-21
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Granted: 1934-12-04
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Expires: 1950-04-21
Abstract
No abstract record available.
Inventors
- 👤 Winkler Fritz
- 👤 Hochheim Ernst
- 👤 Bergmann Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/06; C03C2217/00; C03C2217/20; C03C2217/25; C03C2217/27; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/151; C03C2218/30; C03C2218/31
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) | 1937-12-03 | 1938-06-04 | 1938-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-12-03 | 1942-06-04 | 1942-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-12-03 | 1946-06-04 | 1946-12-04 | $7700.00 | Window Closed / Lapsed |