US3014931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
10-carboxy-delta4-androstenes and process for the production thereof
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1960-03-01
•
Granted: 1961-12-26
•
Expires: 1980-03-01
Abstract
No abstract record available.
Inventors
- 👤 Nishikawa Masamoto
- 👤 Hagiwara Hikoichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:54
CPC Classifications
C; C07; C07J; C07J5/00; C07J1/00; C07J75/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
10-CARBOXY-19-NOR-4-ANDROSTENE-3,17-DIONE.
Claim 2
Dependent Claim
1 words
10-CARBOXY-19-NOR-4-ANDROSTENE-3,17-DIONE.
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) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |