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Patent US630612A successfully refreshed from Google Patents.
US630612A
Expired / Lapsed
US
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Process of producing chromic acid by electrolysis.
Assignee: Farbwerke Vormals Meister Lucius & Bruening
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Filing: 1898-08-19
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Granted: 1899-08-08
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Expires: 1918-08-19
Abstract
No abstract record available.
Inventors
- 👤 Max Le Blanc
- 👤 Hermann Reisenegger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:28
CPC Classifications
C; C01; C01G; C01G37/00; C01G37/02; C01G37/033
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) | 1902-08-08 | 1903-02-07 | 1903-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-08-08 | 1907-02-07 | 1907-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-08-08 | 1911-02-07 | 1911-08-09 | $7700.00 | Window Closed / Lapsed |