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US3170932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-aza-8-oxaspiro[4, 5]decane-1, 3-diones
Assignee: Sandoz AG
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Filing: 1962-09-27
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Granted: 1965-02-23
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Expires: 1982-09-27
Abstract
No abstract record available.
Inventors
- 👤 Jucker Ernst
- 👤 Suess Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:31
CPC Classifications
C; C07; C07D; C07D491/00; C07D491/02; C07D491/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |