US3158608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic hydrazone dyestuffs
Assignee: Bayer AG
•
Filing: 1960-08-05
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Granted: 1964-11-24
•
Expires: 1980-08-05
Abstract
No abstract record available.
Inventors
- 👤 Raue Roderich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:52
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/10; C09B44/12; C09B44/123; C09B23/00; C09B23/16; C09B23/162; C09B23/164; C09B26/00; C09B26/02; C09B26/04; C09B44/102; C09B55/00; C09B55/002; C09B55/003; C09B56/00; C09B56/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A DYESTUFF OF THE FORMULA
References Cited (Backward Citations)
US2620341A
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US2628152A
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US2840443A
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US2774757A
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US2913303A
Cited
US2855398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |