Patent US2104469A successfully refreshed from Google Patents.
US3337522A
Expired / Lapsed
US
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Dispersible monoazo dyes
Assignee: Novartis AG
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Filing: 1964-08-17
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Granted: 1967-08-22
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Expires: 1984-08-17
Abstract
No abstract record available.
Inventors
- 👤 Hans E Wegmuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:08
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/78; C09B62/82; C09B62/825; C09B43/00; C09B43/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A NON-SULFONATED, NON-METALLIZABLE DISPERSIBLE DYESTUFF FALLING UNDER THE FORMULA
Claim 2
Dependent Claim
9 words
A NON-SULFONATED, NON-METALLIZABLE DISPERSIBLE DYESTUFF FALLING UNDER 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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |