US3448190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uv absorbent compositions containing benzoyl-benzofurans
Assignee: Merck KGaA
•
Filing: 1966-03-30
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Granted: 1969-06-03
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Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Karl Heinrich Baron
- 👤 Rainer Klink
- 👤 Fritz Reiff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:49
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/78; C07D307/79; C07D307/80; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4973; A61Q; A61Q17/00; A61Q17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3012042A
Cited
US3165537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |