Patent US3222354A successfully refreshed from Google Patents.
US3222354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble reactive azo dyes
Assignee: BASF SE
•
Filing: 1963-03-15
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Granted: 1965-12-07
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Expires: 1983-03-15
Abstract
No abstract record available.
Inventors
- 👤 Lange Guenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:05
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/465; C09B62/47; C09B62/002; C09B62/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A WATER-SOLUBLE REACTIVE AZO DYE OF THE FORMULA
Claim 2
Dependent Claim
8 words
A WATER-SOLUBLE REACTIVE AZO DYE OF THE FORMULA
References Cited (Backward Citations)
BE565447A
Cited
US2374158A
Cited
US2931795A
Cited
US3007762A
Cited
BE565650A
Cited
FR1212810A
Cited
GB848742A
Cited
FR1239052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |