Patent US2885398A successfully refreshed from Google Patents.
US2885398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
17alpha-alkyltestosterone derivatives
Assignee: JULIAN LAB Inc
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Filing: 1957-12-19
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Granted: 1959-05-05
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Expires: 1977-12-19
Abstract
No abstract record available.
Inventors
- 👤 Percy L Julian
- 👤 Helen C Printy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:23
CPC Classifications
C; C07; C07J; C07J71/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A COMPOUND HAVING THE BASIC STRUCTURAL FORMULA
Claim 2
Dependent Claim
7 words
A COMPOUND HAVING THE BASIC STRUCTURAL FORMULA
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) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |