Patent US3227704A successfully refreshed from Google Patents.
US3227704A
Expired / Lapsed
US
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Water-soluble, metal-containing reactive disazo dyes
Assignee: Sandoz AG
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Filing: 1962-01-23
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Granted: 1966-01-04
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Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Schweizer August
- 👤 Uchlinger Hanspeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:55
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B62/012; C09B62/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A METAL COMPLEX COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE COPPER, NICKEL, COBALT AND CHROMIUM COMPLEX COMPOUNDS OF THE WATER-SOLUBLE DIAZO DYES OF THE FORMULA
Claim 2
Dependent Claim
26 words
A METAL COMPLEX COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE COPPER, NICKEL, COBALT AND CHROMIUM COMPLEX COMPOUNDS OF THE WATER-SOLUBLE DIAZO DYES OF THE FORMULA
References Cited (Backward Citations)
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US3057844A
Cited
FR1225281A
Cited
US3036058A
Cited
US3038893A
Cited
US3116275A
Cited
US3120507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |