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US2945883A
Expired / Lapsed
US
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Process for converting optically active aminodiols into racemic aminodiols by oxidation followed by racemization
Assignee: Pfizer Italia SRL
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Filing: 1956-08-14
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Granted: 1960-07-19
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Expires: 1976-08-14
Abstract
No abstract record available.
Inventors
- 👤 Alberti Carlo Giuseppe
- 👤 Vercellone Alberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:17
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE PROCESS WHICH COMPRISES TREATING A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
10 words
THE PROCESS WHICH COMPRISES TREATING A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2143383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |