US978865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo dye and process of making.
Assignee: Hoechst AG
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Filing: 1910-04-04
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Granted: 1910-12-20
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Expires: 1930-04-04
Abstract
No abstract record available.
Inventors
- 👤 Otto Ernst
- 👤 Heinrich Eichwede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:43
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16
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) | 1913-12-19 | 1914-06-20 | 1914-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-12-19 | 1918-06-20 | 1918-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-12-19 | 1922-06-20 | 1922-12-20 | $7700.00 | Window Closed / Lapsed |