US3816538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated salicoins having antiparasitic activities
Assignee: US Philips Corp
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Filing: 1971-06-18
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Granted: 1974-06-11
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Expires: 1991-06-18
Abstract
Abstract PHENOL 2-((2-HO,3-(HAL-),R2-PHENYL)-CO-C(-R3)(-OH)-),6-(HAL-),R1- 2-(2-HO,3-(HAL-),R2-PHENYL),3-(ALK-),7-(HAL-),R1-2,3- POLYHALOGENATED SALICOINS FOUND USEFUL FOR CONTROLLING LIVER FLUKES, AN EXAMPLE BEING 3,3''-DICHLORO-5,5''-BIBROMOSALICOIN. 2-((2-HO,3-(HAL-),R2-PHENYL)-CO-CO-),6-(HAL-),R1-PHENOL DIHYDROBENZOFURAN-2,3-DIOL
Inventors
- 👤 H Haeck
- 👤 W Pereboom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:42
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/82; C07C49/83; C07C45/00; C07C45/61; C07C45/64; C07C45/67; C07C45/68
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |