Patent US3342831A successfully refreshed from Google Patents.
US3342831A
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Process for the production of a primary aminoanthraquinone by conversion of an n-cyclohexylaminoanthraquinone
Assignee: BASF SE
•
Filing: 1964-08-07
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Granted: 1967-09-19
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Expires: 1984-08-07
Abstract
No abstract record available.
Inventors
- 👤 Braun Willy
- 👤 Ruske Manfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:54
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/50; C09B1/16; C09B1/20; C09B1/22; C09B1/24; C09B1/56; C09B1/58; C09B1/585
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A PROCESS FOR THE PRODUCTION OF PRIMARY AMINES OF THE ANTHRAQUINONE SERIES WHICH COMPRISES ALLOWING A MELT OF ALUMINUM CHLORIDE CONTAINING A MELTING POINT DEPRESSANT FOR SAID ALUMINUM CHLORIDE TO ACT ON AN NCYCLOHEXYLAMINOANTHRQUINONE.
Claim 2
Dependent Claim
34 words
A PROCESS FOR THE PRODUCTION OF PRIMARY AMINES OF THE ANTHRAQUINONE SERIES WHICH COMPRISES ALLOWING A MELT OF ALUMINUM CHLORIDE CONTAINING A MELTING POINT DEPRESSANT FOR SAID ALUMINUM CHLORIDE TO ACT ON AN NCYCLOHEXYLAMINOANTHRQUINONE.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |