Patent US3831605A successfully refreshed from Google Patents.
US3219704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of aromatic amines from alicyclic ketones
Assignee: Monsanto Co
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Filing: 1961-02-02
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Granted: 1965-11-23
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Expires: 1981-02-02
Abstract
No abstract record available.
Inventors
- 👤 Gene R Wilder
- 👤 James E Van Verth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:56
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE PROCESS WHICH CONSISTS ESSENTIALLY OF HEATING BELOW ABOUT 350*C. SIX-MEMBERED ALICYCLIC HYDROCARBON MONOKETONE OF LESS THAN 11 CARBON ATOMS, EACH RING CARBON EXCEPT THE ONE ATTACHED TO OXYGEN BEING ATTACHED TO AT LEAST ONE HYDROGEN, AND AMMONIA COMPOUND OF THE GROUP CONSISTING OF AMMONIA, PRIMARY AMINES, AND SECONDARY AMINES, THE MOLAR PORTION OF THE KETONE BEING AT LEAST SUBSTANTIALLY EQUAL TO THE AMMONIA COMPOUND WITH DEHYDROGENATION CATALYST THEREBY CONVERTIN ALICYCLIC KETONE TO MONOVALENT CARBOCYCLIC RADICAL OF THE SAME NUMBER OF CARBON ATOMS REPLACING THE HYDROGEN OF THE AMMONIA COMPOUND.
Claim 2
Dependent Claim
90 words
THE PROCESS WHICH CONSISTS ESSENTIALLY OF HEATING BELOW ABOUT 350*C. SIX-MEMBERED ALICYCLIC HYDROCARBON MONOKETONE OF LESS THAN 11 CARBON ATOMS, EACH RING CARBON EXCEPT THE ONE ATTACHED TO OXYGEN BEING ATTACHED TO AT LEAST ONE HYDROGEN, AND AMMONIA COMPOUND OF THE GROUP CONSISTING OF AMMONIA, PRIMARY AMINES, AND SECONDARY AMINES, THE MOLAR PORTION OF THE KETONE BEING AT LEAST SUBSTANTIALLY EQUAL TO THE AMMONIA COMPOUND WITH DEHYDROGENATION CATALYST THEREBY CONVERTIN ALICYCLIC KETONE TO MONOVALENT CARBOCYCLIC RADICAL OF THE SAME NUMBER OF CARBON ATOMS REPLACING THE HYDROGEN OF THE AMMONIA COMPOUND.
References Cited (Backward Citations)
US2393889A
Cited
US2413598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |