US3402166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo and disazo dyes containing cyclic dicarboxylic acid imide groups
Assignee: Siegle & Co GmbH
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Filing: 1964-08-31
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Granted: 1968-09-17
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Expires: 1984-08-31
Abstract
No abstract record available.
Inventors
- 👤 Heckl Leonhard
- 👤 Heinle Kurt
- 👤 Liedek Egon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:27
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/32; C09B43/34; C09B33/00; C09B33/02; C09B35/00; C09B35/02
Claims Analysis
Total Claims: 0
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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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |