US1015495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing indigo-o-nitrophenyl-lactic acid ketones.
Assignee: Chimique des Usines du Rhone
•
Filing: 1910-10-07
•
Granted: 1912-01-23
•
Expires: 1930-10-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph Koetschet
- 👤 Andre Barbier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:02
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/45
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1915-01-22 | 1915-07-24 | 1916-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-01-22 | 1919-07-24 | 1920-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-01-22 | 1923-07-24 | 1924-01-23 | $7700.00 | Window Closed / Lapsed |