Patent US4922100A successfully refreshed from Google Patents.
Patent US2917544A successfully refreshed from Google Patents.
US2917544A
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US
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Method of transforming 4-(alpha-hydroxybenzal) oxazoline-5-one compounds into n-acylated aminodiols
Assignee: Gruppo Lepetit SpA
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Filing: 1957-10-09
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Granted: 1959-12-15
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Expires: 1977-10-09
Abstract
No abstract record available.
Inventors
- 👤 Gustavo A Weitnauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:58
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
IN A METHOD OF TRANSFORMING A 4-(A-HYDROXY-BENZAL)-OXAZOLINE-5-ONE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
11 words
IN A METHOD OF TRANSFORMING A 4-(A-HYDROXY-BENZAL)-OXAZOLINE-5-ONE COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
47 words
METHOD OF TRANSFORMING 2-PHENYL-4-(A-HYDROXYBENZAL)-OXAZOLINE-5-ONE INTO 1-PHENYL-2-BENZOYLAMIDO1:3-PROPANE-DIOL WHICH COMPRISES HEATING 8.2 G. OF THE OXAZOLINE COMPOUND IN ANHYDROUS DIOXANE WITH ABOUT 5 G. OF LITHIUM ALUMINUM HYDRIDE AT 35-40*C., COOLING THE MIXTURE, DECOMPOSING EXCESS HYDRIDE BY ADDING AN EXCESS OF WATER, AND NEUTRALIZING THE AQUEOUS MIXTURE WITH ACID.
Claim 4
Dependent Claim
47 words
METHOD OF TRANSFORMING 2-PHENYL-4-(A-HYDROXYBENZAL)-OXAZOLINE-5-ONE INTO 1-PHENYL-2-BENZOYLAMIDO1:3-PROPANE-DIOL WHICH COMPRISES HEATING 8.2 G. OF THE OXAZOLINE COMPOUND IN ANHYDROUS DIOXANE WITH ABOUT 5 G. OF LITHIUM ALUMINUM HYDRIDE AT 35-40*C., COOLING THE MIXTURE, DECOMPOSING EXCESS HYDRIDE BY ADDING AN EXCESS OF WATER, AND NEUTRALIZING THE AQUEOUS MIXTURE WITH ACID.
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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |