US2934570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediates for synthesis of arachidonic acid
Assignee: F Hoffmann La Roche AG
•
Filing: 1958-12-11
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Granted: 1960-04-26
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Expires: 1978-12-11
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Moses Wolf
- 👤 Rachlin Albert Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
C; C07; C07D; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; C07C; C07C17/00; C07C17/093; C07C17/16; C07C17/26; C07C17/263; C07C17/2632; C07C17/35; C07C17/354; C07C21/00; C07C21/02; C07C21/215; C07C21/22; C07C51/00; C07C51/15
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
7 words
I- HYDROXY- 9 CHLORO- 2, 5 -NONODIYNE
References Cited (Backward Citations)
US2855441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |