US3496178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2 - (o,o - dialkyl-phosphoryl)-6-carbalkoxy or carbalkenoxy-pyrazolo pyrimidines
Assignee: Hoechst AG
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Filing: 1966-08-17
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Granted: 1970-02-17
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Expires: 1986-08-17
Abstract
No abstract record available.
Inventors
- 👤 Otto Scherer
- 👤 Hilmar Mildenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:55
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6561; A; A01; A01N; A01N57/00; A01N57/10; A01N57/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3402176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |