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US2865916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triazole brighteners
Assignee: —
•
Filing: —
•
Granted: 1958-12-23
•
Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:23
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C07D249/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF THE FREE ACID OF THE STRUCTURE:
Claim 2
Dependent Claim
13 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF THE FREE ACID OF THE STRUCTURE:
References Cited (Backward Citations)
US2784183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |