US3573273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble monoazo dyes containing 3-amino-2,1-benzisothiazole coupled to an n,n-disubstituted aniline
Assignee: BASF SE
•
Filing: 1968-05-23
•
Granted: 1971-03-30
•
Expires: 1988-05-23
Abstract
Abstract MONOAZO DYES OF A 3-AMINO-2, 1-BENZISOTHIAZOLE COUPLED TO AN N,N-DISUBSTITUTED-ANILINE DERIVATIVE, SAID DYES BEING ESPECIALLY USEFUL FOR DYEING SYNTHETIC TEXTILE MATERIAL OF FIBER-FORMING POLYESTERS AND POLYAMIDES AND EXHIBITING FOOD FASTNESS PROPERTIES.
Inventors
- 👤 Matthias Seedfelder
- 👤 Erwin Hahn
- 👤 Hans Guenter Wippel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:14
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/0025; C09B29/0074; C09B29/0077; C09B29/0081; C09B62/00; C09B62/44; C09B62/78; C09B62/82; C09B62/825
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |