Patent US2929809A successfully refreshed from Google Patents.
US2929809A
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New complex metal compounds of monoazo-dyestuffs
Assignee: BASF Schweiz AG
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Filing: 1957-08-05
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Granted: 1960-03-22
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Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 Menzi Karl
- 👤 Oesterlein Fritz
- 👤 Ruetimeyer Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:39
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/48; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/095; C09B67/00; C09B67/0032; D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/66; D06P3/663; H; H01; H01J; H01J2893/00; H01J2893/0072; H01J2893/0073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A COMPLEX METAL COMPOUND CONTAINING ONE OF THE METALS SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COPPER, NICKEL AND COBALT BOUND IN COMPLEX UNION WITH AN ORTHO:ORTHO''-DIHYDROXYMONOAZO DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
31 words
A COMPLEX METAL COMPOUND CONTAINING ONE OF THE METALS SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COPPER, NICKEL AND COBALT BOUND IN COMPLEX UNION WITH AN ORTHO:ORTHO''-DIHYDROXYMONOAZO DYESTUFF OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |