Patent US1951712A successfully refreshed from Google Patents.
US2053616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing preparations
Assignee: FIRM OF SOCIETY OF CHEMICAL INDUSTRY IN BASLE
•
Filing: 1935-01-12
•
Granted: 1936-09-08
•
Expires: 1955-01-12
Abstract
No abstract record available.
Inventors
- 👤 Landolt Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:48
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0072; C09B67/0073; C09B69/00; C09B69/02; C09B69/04
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) | 1939-09-08 | 1940-03-09 | 1940-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-09-08 | 1944-03-09 | 1944-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-09-08 | 1948-03-09 | 1948-09-08 | $7700.00 | Window Closed / Lapsed |