US2415379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing textile fibers with vat dyes
Assignee: EIDP Inc
•
Filing: 1944-03-11
•
Granted: 1947-02-04
•
Expires: 1964-03-11
Abstract
No abstract record available.
Inventors
- 👤 Nicholas R Vieira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:10
CPC Classifications
D; D06; D06B; D06B3/00; D06B3/10; D06B2700/00; D06B2700/09
Claims Analysis
Total Claims: 0
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US2204839A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-03 | 1950-08-05 | 1951-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-03 | 1954-08-05 | 1955-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-03 | 1958-08-05 | 1959-02-04 | $7700.00 | Window Closed / Lapsed |