US3876642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4(5'halo-triazolyl)-naphthalimides
Assignee: Bayer AG
•
Filing: 1973-05-31
•
Granted: 1975-04-08
•
Expires: 1993-05-31
Abstract
Abstract 4- V-Triazolyl-(2)!-naphthalimides of the formula Wherein R.sub.1 and R.sub.2 independently of one another denote an aliphatic radical with 1 to 12 C-atoms, a cycloaliphatic or araliphatic radical or a monocyclic aryl radical while Hal represents halogen, their manufacture and use as brighteners.
Inventors
- 👤 Alfons Dorlars
- 👤 Axel Vogel
- 👤 Carl-Wolfgang Schellhammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:24
CPC Classifications
C; C07; C07D; C07D221/00; C07D221/02; C07D221/04; C07D221/06; C07D221/14; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
4 words
TRIAZOLY-NAPHTHALIMIDE OF THE FORMULA
Claim 2
Dependent Claim
4 words
TRIAZOLY-NAPHTHALIMIDE OF THE FORMULA
Claim 3
Dependent Claim
19 words
Triazolyl-naphthalimide of the formula of claim 1, wherein R.sub.1 and R.sub.2 = C.sub.1 -C.sub.6 -alkyl and Hal = chlorine.
References Cited (Backward Citations)
US3362958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |