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Patent US2830983A successfully refreshed from Google Patents.
US2830983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of amino alcohols
Assignee: National Research Council Canada
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Filing: 1955-05-31
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Granted: 1958-04-15
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond U Lemieux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:52
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE PROCESS FOR PREPARING AMINO ALCOHOLS WHICH COMPRISES REACTING AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROXY ALDEHYDES AND ALIPHATIC HYDROXY KETONES WITH HYDRAZINE AND SUBSEQUENTLY HYDROGENATING THE RESULTANT REACTION PRODUCT AT A MAXIMUM TEMPERATURE OF 120*C.
Claim 2
Dependent Claim
43 words
THE PROCESS FOR PREPARING AMINO ALCOHOLS WHICH COMPRISES REACTING AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROXY ALDEHYDES AND ALIPHATIC HYDROXY KETONES WITH HYDRAZINE AND SUBSEQUENTLY HYDROGENATING THE RESULTANT REACTION PRODUCT AT A MAXIMUM TEMPERATURE OF 120*C.
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) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |