Patent US1986241A successfully refreshed from Google Patents.
US1986241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of vinyl-aryl compounds
Assignee: IG Farbenindustrie AG
•
Filing: 1931-08-17
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Granted: 1935-01-01
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Expires: 1951-08-17
Abstract
No abstract record available.
Inventors
- 👤 Wulff Carl
- 👤 Roell Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:45
CPC Classifications
C; C07; C07C; C07C25/00; C07C25/24; C07C25/28; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167
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) | 1937-12-31 | 1938-07-02 | 1939-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-12-31 | 1942-07-02 | 1943-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-12-31 | 1946-07-02 | 1947-01-01 | $7700.00 | Window Closed / Lapsed |