US3681100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light stable orange pigment based on quinacridone solid solution
Assignee: Novartis Corp
•
Filing: 1970-10-08
•
Granted: 1972-08-01
•
Expires: 1990-10-08
Abstract
Abstract SOLID SOLUTIONS ARE PRODUCED CONSISTING ESSENTIALLY OF LINEAR QUINACRIDONE (QA), 4,11-DICHLOROQUINACRIDONE (4,11-DICHLORO-QA), QUINACRIDONEQUINONE (QAQ), AND DIHYDROQUINACRIDONE (DQA).
Inventors
- 👤 Edward E Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
C; C09; C09B; C09B48/00; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0036
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |