US2954378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dioxazine dyestuffs
Assignee: Novartis AG
•
Filing: 1958-05-02
•
Granted: 1960-09-27
•
Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
- 👤 Pugin Andre
- 👤 Hurbin Meinrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:34
CPC Classifications
C; C09; C09B; C09B19/00; C09B19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
AN UNSULPHONATED DIOXAZINE PIGMENT WHICH CORRESPONDS TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
10 words
AN UNSULPHONATED DIOXAZINE PIGMENT WHICH CORRESPONDS TO THE GENERAL FORMULA:
References Cited (Backward Citations)
US2845423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |