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US3403143A
Expired / Lapsed
US
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Water-soluble basic mono- and dis-azo dyestuffs
Assignee: BASF Schweiz AG
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Filing: 1965-11-08
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Granted: 1968-09-24
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Expires: 1985-11-08
Abstract
No abstract record available.
Inventors
- 👤 Ramanathan Visvanathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; C09; C09B; C09B44/00; C09B44/02; C09B44/04; C09B62/00; C09B62/44; C09B62/443; C09B62/447; C09B62/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3346553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |