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US3493659A
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US
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Compositions and process for the production thereof
Assignee: F Hoffmann La Roche AG
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Filing: 1967-10-23
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Granted: 1970-02-03
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Expires: 1987-10-23
Abstract
No abstract record available.
Inventors
- 👤 Louis Magid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:55
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K31/00; A61K31/33; A61K31/335; A61K31/365; A61K31/375
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2887437A
Cited
US2980589A
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US3034911A
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US3084104A
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US3266992A
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US3175948A
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US3293132A
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US3332848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |