US1216760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper compounds of orthooxyazo dyestuffs and a process of making same.
Assignee: BASF Schweiz AG
•
Filing: 1915-08-03
•
Granted: 1917-02-20
•
Expires: 1935-08-03
Abstract
No abstract record available.
Inventors
- 👤 Berthold Wuth
- 👤 Bertram Mayer
- 👤 Carl Jagerspacher
- 👤 Eugen Anderwert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:49
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/24
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) | 1920-02-20 | 1920-08-21 | 1921-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-02-20 | 1924-08-21 | 1925-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-02-20 | 1928-08-21 | 1929-02-20 | $7700.00 | Window Closed / Lapsed |