Patent US1166520A successfully refreshed from Google Patents.
US2920103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
11-monocis isomer of vitamin a
Assignee: Ortho Pharmaceutical Corp
•
Filing: 1958-01-24
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Granted: 1960-01-05
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Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Oroshnik William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:46
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/06; C07C403/08; C07C403/12; C07C403/14; C07B; C07B2200/00; C07B2200/09; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2451739A
Cited
US2834813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |