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Patent US3274253A successfully refreshed from Google Patents.
US3274253A
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Ammonolysis process
Assignee: Zeneca Inc
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Filing: 1963-07-18
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Granted: 1966-09-20
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Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Markiewitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:35
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN THE CATALYST AMMONOLYSIS OF ALIPHATIC ALCOHOLS, WHICH UNDERGO AMMONOLYSIS REACTION IN THE PRESENCE OD HYDROGENATING CATALYST, WITH AMMONIA IN LIQUID PHASE TO YIELD PREDOMINANTLY PRIMARY AMINES THE IMPROVEMENT WHICH COMPRISES ADDING TO THE REACTION SYSTEM A MINOR PROPORTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, WEAK ACID SALTS OF ALKALI METAL HYDROXIDES AND ALUMINUM ALKOXIDES.
Claim 2
Dependent Claim
61 words
IN THE CATALYST AMMONOLYSIS OF ALIPHATIC ALCOHOLS, WHICH UNDERGO AMMONOLYSIS REACTION IN THE PRESENCE OD HYDROGENATING CATALYST, WITH AMMONIA IN LIQUID PHASE TO YIELD PREDOMINANTLY PRIMARY AMINES THE IMPROVEMENT WHICH COMPRISES ADDING TO THE REACTION SYSTEM A MINOR PROPORTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, WEAK ACID SALTS OF ALKALI METAL HYDROXIDES AND ALUMINUM ALKOXIDES.
References Cited (Backward Citations)
US2636902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |