US2195974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing new amino-carboxylic acids
Assignee: IG Farbenindustrie AG
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Filing: 1937-07-10
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Granted: 1940-04-02
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Expires: 1957-07-10
Abstract
No abstract record available.
Inventors
- 👤 Reppe Walter
- 👤 Ufer Hanns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:45
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/14; C07D295/145; C07D295/15; C07D215/00; C07D215/02; C07D215/04; C07D215/06; C07D221/00; C07D221/02; C07D221/04; C07D221/06; C07D221/10
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) | 1943-04-02 | 1943-10-02 | 1944-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-02 | 1947-10-02 | 1948-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-02 | 1951-10-02 | 1952-04-02 | $7700.00 | Window Closed / Lapsed |