US3047579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing n-oxides
Assignee: Shell USA Inc
•
Filing: 1958-07-18
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Granted: 1962-07-31
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Expires: 1978-07-18
Abstract
No abstract record available.
Inventors
- 👤 Robert C Witman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:50
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; C07C; C07C291/00; C07C291/02; C07C291/04; C07D215/00; C07D215/58; C07D215/60
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
A PROCESS FOR PREPARING N-OXIDES WHICH COMPRISES REACTING: (A) A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
14 words
A PROCESS FOR PREPARING N-OXIDES WHICH COMPRISES REACTING: (A) A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
53 words
A PROCESS FOR PREPARING THE N-OXIDE OF QUINOLINE WHICH COMPRISES REACTING QUINOLINE AND HYDROGEN PEROXIDE IN A CARBOXYLATE-FREE ENVIRONMENT AT A TEMPERATURE OF FROM 40*C, TO 80*C. IN THE PRESENCE OF AN INORGANIC PERCOMPOUND OF AN ACID-FORMING ELEMENT SELECTED FROM THE GROUP CONSISTING OF THE ELEMENTS OF GROUP VI OF THE PERIODIC TABLE.
Claim 4
Dependent Claim
53 words
A PROCESS FOR PREPARING THE N-OXIDE OF QUINOLINE WHICH COMPRISES REACTING QUINOLINE AND HYDROGEN PEROXIDE IN A CARBOXYLATE-FREE ENVIRONMENT AT A TEMPERATURE OF FROM 40*C, TO 80*C. IN THE PRESENCE OF AN INORGANIC PERCOMPOUND OF AN ACID-FORMING ELEMENT SELECTED FROM THE GROUP CONSISTING OF THE ELEMENTS OF GROUP VI OF THE PERIODIC TABLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |