Patent US1958327A successfully refreshed from Google Patents.
US1958327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble colored products fast to light, to water, and to weather
Assignee: FIRM SOCIETY OF CHEMICAL INDUSTRY IN BASLE
•
Filing: 1929-08-10
•
Granted: 1934-05-08
•
Expires: 1949-08-10
Abstract
No abstract record available.
Inventors
- 👤 Winkler Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
C; C09; C09B; C09B63/00; C09B63/005; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/09
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) | 1937-05-07 | 1937-11-06 | 1938-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-05-07 | 1941-11-06 | 1942-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-05-07 | 1945-11-06 | 1946-05-08 | $7700.00 | Window Closed / Lapsed |