US3247189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3, 19 and 20 oxygenated-delta5-pregnenes
Assignee: BASF Corp
•
Filing: 1962-09-07
•
Granted: 1966-04-19
•
Expires: 1982-09-07
Abstract
No abstract record available.
Inventors
- 👤 Wettstein Albert
- 👤 Anner Georg
- 👤 Heusler Karl
- 👤 Kalvoda Jaroslav
- 👤 Ueberwasser Hellmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:57
CPC Classifications
C; C07; C07J; C07J71/00; C07J1/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
19-OXYGENATED $5-PREGNENES OF THE FORMULA
Claim 2
Dependent Claim
5 words
19-OXYGENATED $5-PREGNENES OF THE FORMULA
References Cited (Backward Citations)
US3154569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |