US3467681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-amino-2-aryloxy-4-arylsulfon-amido-anthraquinones
Assignee: Bayer AG
•
Filing: 1968-02-14
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Granted: 1969-09-16
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Expires: 1988-02-14
Abstract
No abstract record available.
Inventors
- 👤 Volker Hederich
- 👤 Gunter Gehrke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:15
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/50; C09B1/54; C09B1/547; C09B1/16; C09B1/20; C09B1/36; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |