US3523934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenyl-azo-naphthol lakes
Assignee: Bayer AG
•
Filing: 1967-04-14
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Granted: 1970-08-11
•
Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Heinz Haubrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:11
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/38; C09B45/46; C09B63/00; C09B63/005; Y; Y10; Y10S; Y10S534/00; Y10S534/04
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) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |