US3344190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
O-(beta-hydroxyethyl)-hydroxylamines and process for their manufacture
Assignee: Gruppo Lepetit SpA
•
Filing: 1964-09-21
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Granted: 1967-09-26
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Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Bruno J R Nicolaus
- 👤 Testa Emilio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:58
CPC Classifications
—
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
AN O-(B-HYDROXEYETHYL)-HYDROXYLAMINE OF THE FORMULA:
Claim 2
Dependent Claim
5 words
AN O-(B-HYDROXEYETHYL)-HYDROXYLAMINE OF THE FORMULA:
Claim 3
Dependent Claim
38 words
A PROCESS FOR PREPARING O-(B-HYDROXYETHYL)HYDROXYLAMINE, WHICH COMPRISES HYDROGENATING O-CARBETHOXYMETHYL-N-CARBETHOXY-HYDROXYLAMINE WITH LITHIUM ALUMINIUM HYDRIDE IN AN INERT ANHYDROUS ORGANIC SOLVENT AT A TEMPERATURE BELOW 0*C. AND REFLUXING THE OBTAINED O-(B-HYDROXYETHYL)-N-CARBETHOXY-HYDROXYALAMINE WITH AN AQUEOUS SOLUTION OF A STRONG MINERAL ACID.
Claim 4
Dependent Claim
38 words
A PROCESS FOR PREPARING O-(B-HYDROXYETHYL)HYDROXYLAMINE, WHICH COMPRISES HYDROGENATING O-CARBETHOXYMETHYL-N-CARBETHOXY-HYDROXYLAMINE WITH LITHIUM ALUMINIUM HYDRIDE IN AN INERT ANHYDROUS ORGANIC SOLVENT AT A TEMPERATURE BELOW 0*C. AND REFLUXING THE OBTAINED O-(B-HYDROXYETHYL)-N-CARBETHOXY-HYDROXYALAMINE WITH AN AQUEOUS SOLUTION OF A STRONG MINERAL ACID.
References Cited (Backward Citations)
US3184500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |