Patent US2931794A successfully refreshed from Google Patents.
US2931794A
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Complex metal compounds of monoazodyestuffs
Assignee: BASF Schweiz AG
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Filing: 1958-08-04
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Granted: 1960-04-05
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Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Ruetimeyer Bernhard
- 👤 Oesterlein Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:11
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/095
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A COMPLEX METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE COMPLEX CHROMIUM AND COBALT COMPOUNDS WHICH CONTAIN IN COMPLEX UNION WITH THE METAL TWO MOLECULES OF MONOAZO DYESTUFFS OF THE FORMULA
Claim 2
Dependent Claim
32 words
A COMPLEX METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE COMPLEX CHROMIUM AND COBALT COMPOUNDS WHICH CONTAIN IN COMPLEX UNION WITH THE METAL TWO MOLECULES OF MONOAZO DYESTUFFS OF THE FORMULA
References Cited (Backward Citations)
US1779298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |