US2447196A
Expired / Lapsed
US
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Diamides of methane-1:1-dicarboxylic acids
Assignee: Novartis AG
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Filing: 1947-02-28
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Granted: 1948-08-17
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Expires: 1967-02-28
Abstract
No abstract record available.
Inventors
- 👤 Martin Henry
- 👤 Gysin Hans
- 👤 Zaeslin Hans
- 👤 Margot Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:10
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/54; C07C; C07C233/00; C07C233/01; C07C233/02; C07C55/00; C07C55/02; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60; C07D211/62
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) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |