Patent US3176028A successfully refreshed from Google Patents.
US3176028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
20-(aliphatic hydrocarbonoxy)- and 20-(substituted aliphatic hydrocarbon-oxy)pregnane derivatives
Assignee: Roche Palo Alto LLC
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Filing: 1963-05-24
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Granted: 1965-03-30
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 Alexander D Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:34
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA:
Claim 4
Dependent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
US2340388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |