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US676555A
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Blue triphenylmethane dye and process of making same.
Assignee: FARBENFABRIKEN OF ELBERFELD Co
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Filing: 1901-03-19
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Granted: 1901-06-18
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Expires: 1921-03-19
Abstract
No abstract record available.
Inventors
- 👤 Arthur Hausdoerfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:45
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; C09B11/10
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) | 1904-06-17 | 1904-12-17 | 1905-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-06-17 | 1908-12-17 | 1909-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-06-17 | 1912-12-17 | 1913-06-18 | $7700.00 | Window Closed / Lapsed |