Patent US3202650A successfully refreshed from Google Patents.
US3202650A
Expired / Lapsed
US
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Metal-containing reactive azo dyes
Assignee: Sandoz AG
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Filing: 1962-05-03
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Granted: 1965-08-24
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Expires: 1982-05-03
Abstract
No abstract record available.
Inventors
- 👤 Steinemann Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:51
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/018; C09B62/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THE 1:1-COPPER AND 1:1 NICKEL COMPLEX COMPOUNDS OF DYESTUFFS OF THE FORMULA
Claim 2
Dependent Claim
20 words
A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THE 1:1-COPPER AND 1:1 NICKEL COMPLEX COMPOUNDS OF DYESTUFFS OF THE FORMULA
References Cited (Backward Citations)
US3041328A
Cited
US3068219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |