US3036071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of dioxazine dyestuffs
Assignee: BASF Schweiz AG
•
Filing: 1960-08-08
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Granted: 1962-05-22
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Expires: 1980-08-08
Abstract
No abstract record available.
Inventors
- 👤 Frey Christoph
- 👤 Mory Rudolf
- 👤 Moser Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:54
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/32; C09B19/00; C09B19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PROCESS FOR THE MANUFACTURE OF DIOXAZINE PIGMENTS WHICH COMPRISES HEATING IN AN INERT ORGANIC SOLVENT WITH THIONYL CHLORIDE A QUINONE OF THE FORMULA
Claim 2
Dependent Claim
24 words
A PROCESS FOR THE MANUFACTURE OF DIOXAZINE PIGMENTS WHICH COMPRISES HEATING IN AN INERT ORGANIC SOLVENT WITH THIONYL CHLORIDE A QUINONE OF THE FORMULA
References Cited (Backward Citations)
US2026093A
Cited
US2355496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |