US1378443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing cellulose acetates
Assignee: Individual
•
Filing: 1921-01-05
•
Granted: 1921-05-17
•
Expires: 1941-01-05
Abstract
No abstract record available.
Inventors
- 👤 Clavel Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:40
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/40; D06P1/00; D06P1/44; D06P1/673; D06P1/67333; D06P1/67341; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
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) | 1924-05-16 | 1924-11-15 | 1925-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-05-16 | 1928-11-15 | 1929-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-05-16 | 1932-11-15 | 1933-05-17 | $7700.00 | Window Closed / Lapsed |