US3415875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxybenzophenones containing sulfonic acid groups
Assignee: BASF Schweiz AG
•
Filing: 1966-05-31
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Granted: 1968-12-10
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Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Luethi Christian
- 👤 Biland Hans Rudolf
- 👤 Duennenberger Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:39
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/07; C07C309/09; C07C309/11; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C09; C09K; C09K15/00; C09K15/04; C09K15/12; C09K15/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3250804A
Cited
US3265722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |