US2671786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triazine anthrimide carbazole vat dyes
Assignee: Wyeth Holdings LLC
•
Filing: 1952-06-27
•
Granted: 1954-03-09
•
Expires: 1972-06-27
Abstract
No abstract record available.
Inventors
- 👤 Scalera Mario
- 👤 Joyce Asa Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:39
CPC Classifications
C; C09; C09B; C09B5/00; C09B5/24; C09B5/26; C09B5/28; C09B1/00; C09B1/16; C09B1/20; C09B1/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
VAT DYES HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
VAT DYES HAVING THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |