US2262002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of addition products from dienes and compounds having an unsaturated carbon linkage activated by substituents
Assignee: IG Farbenindustrie AG
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Filing: 1939-05-16
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Granted: 1941-11-11
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Expires: 1959-05-16
Abstract
No abstract record available.
Inventors
- 👤 Hopff Heinrich
- 👤 Curt W Rautenstrauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:59
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07B; C07B37/00; C07B37/10; C07B37/12; C07C; C07C253/00; C07C253/30; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/69; C07C46/00; C07C51/00; C07C51/54; C07C51/567; C07C67/00; C07C67/30; C07C67/333; C07C67/343; C07C67/347; C07C2601/00; C07C2601/12; C07C2601/16; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/26; C07C2602/28
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) | 1944-11-10 | 1945-05-12 | 1945-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-10 | 1949-05-12 | 1949-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-10 | 1953-05-12 | 1953-11-11 | $7700.00 | Window Closed / Lapsed |