US2490462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenation products of aldehydes of mono-heteroatomic five membered rings and methods of making same
Assignee: Hexion Inc
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Filing: 1942-11-04
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Granted: 1949-12-06
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Expires: 1962-11-04
Abstract
No abstract record available.
Inventors
- 👤 Emil E Novotny
- 👤 Vogelsang George Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:15
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/301
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |