Patent US3054802A successfully refreshed from Google Patents.
US3054802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Podophyllic acid hydrazides
Assignee: Sandoz AG
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Filing: 1961-06-09
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Granted: 1962-09-18
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Expires: 1981-06-09
Abstract
No abstract record available.
Inventors
- 👤 Rutschmann Jurg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:40
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/44; C07D317/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF HYDROZIDES OF PICROPODOPHYLLINIC ACID OF FORMULA 1
Claim 2
Dependent Claim
15 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF HYDROZIDES OF PICROPODOPHYLLINIC ACID OF FORMULA 1
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |