US3341530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Naphtho(1, 2)triazole brighteners for fine fabrics
Assignee: GAF Chemicals Corp
•
Filing: 1965-05-24
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Granted: 1967-09-12
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Albert F Strobel
- 👤 Sigmund C Catino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:31
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/22; C07D249/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A FLUORESCENT NAPTHOTRIAZOLE COMPOUND OF THE CLASS SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FOLLOWING FORMULAE:
Claim 2
Dependent Claim
18 words
A FLUORESCENT NAPTHOTRIAZOLE COMPOUND OF THE CLASS SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FOLLOWING FORMULAE:
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |