US3590077A
Expired / Lapsed
US
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Salts of chrysanthemic acid with 1-p-nitrophenyl - 2-n,n - dimethyl-aminopropane-1,3-diols
Assignee: Sanofi Aventis France
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Filing: 1968-07-05
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Granted: 1971-06-29
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Expires: 1988-07-05
Abstract
Abstract OPTICAL ISOMERS OF 1-P-NITROPHENYL-2-N,N-DIMETHYLAMINO-PROPANE-1,3-DIOL AND ACID ADDITION SALTS THEREOF, USEFUL FOR THE SEPARATION OF RACEMIC COMPOUNDS AND PREPARATION THEREOF.
Inventors
- 👤 Georges Muller
- 👤 Gaston Amiard
- 👤 Andre Poittevin
- 👤 Vesperto Torelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:43
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/72
Claims Analysis
Total Claims: 0
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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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |