Patent US780741A successfully refreshed from Google Patents.
US780741A
Expired / Lapsed
US
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Sensitizing-dye.
Assignee: FARBEN-FABRIKEN OF ELBERFELD Co
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Filing: 1904-04-29
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Granted: 1905-01-24
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Expires: 1924-04-29
Abstract
No abstract record available.
Inventors
- 👤 Rudolf Berendes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:54
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/12; C09; C09B; C09B23/00; C09B23/02
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) | 1908-01-24 | 1908-07-25 | 1909-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-01-24 | 1912-07-25 | 1913-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-01-24 | 1916-07-25 | 1917-01-24 | $7700.00 | Window Closed / Lapsed |