US1594866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclic monoacylacetyl bodies and process of making same
Assignee: IG Farbenindustrie AG
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Filing: 1923-06-07
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Granted: 1926-08-03
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Expires: 1943-06-07
Abstract
No abstract record available.
Inventors
- 👤 Zitscher Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:37
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/66; C07D235/00; C07D235/02; C07D235/04; C07D235/18
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) | 1929-08-02 | 1930-02-01 | 1930-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-08-02 | 1934-02-01 | 1934-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-08-02 | 1938-02-01 | 1938-08-03 | $7700.00 | Window Closed / Lapsed |