Patent US717550A successfully refreshed from Google Patents.
US717550A
Expired / Lapsed
US
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Process of making black polyazo dyes.
Assignee: ACTIEN GESELLSCHAFT fur ANILIN FABRICATION
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Filing: 1902-06-13
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Granted: 1903-01-06
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Expires: 1922-06-13
Abstract
No abstract record available.
Inventors
- 👤 Jens Dedichen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:59
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/01
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) | 1906-01-05 | 1906-07-07 | 1907-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-01-05 | 1910-07-07 | 1911-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-01-05 | 1914-07-07 | 1915-01-06 | $7700.00 | Window Closed / Lapsed |