US3390149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of beta-quinophthalines
Assignee: BASF SE
•
Filing: 1965-09-22
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Granted: 1968-06-25
•
Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 Kranz Joachim
- 👤 Gerstner Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:05
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/46; C07D209/50; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C09B57/00; C09B57/04; C09K; C09K11/00; C09K11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3320279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |