Patent US3502190A successfully refreshed from Google Patents.
Patent US3639385A successfully refreshed from Google Patents.
US3639385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclic monoazo compounds from n n-diaralkyl anilines and polyester textile materials dyed therewith
Assignee: Novartis Corp
•
Filing: 1968-07-26
•
Granted: 1972-02-01
•
Expires: 1988-07-26
Abstract
Abstract MONOAZO COMPOUNDS HAVING A HETEROCYCLIC DIAZO COMPONENT AND A 3-ACYLAMIDO-N,N-DIARALKYLANILINE COUPLING COMPONENT ARE USEFUL AS DYES FOR POLYESTER TEXTILE MATERIALS ON WHICH THE COMPOUNDS EXHIBIT IMPROVED BUILDUP AND FASTNESS PROPERTIES, SUCH AS FASTNESS TO LIGHT AND RESISTANCE TO SUBLIMATION.
Inventors
- 👤 Max A Weaver
- 👤 Herman S Pridgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:23
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/06; C; C09; C09B; C09B29/00; C09B29/0025; C09B29/06; C09B29/08; D; D06; D06P; D06P3/00; D06P3/34; D06P3/52; D06P3/54; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |