US3333000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of amine oxides
Assignee: Pennwalt Corp
•
Filing: 1964-05-25
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Granted: 1967-07-25
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Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Albert Harry Elmer
- 👤 Haines Paul Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:48
CPC Classifications
C; C07; C07C; C07C291/00; C07C291/02; C07C291/04; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
IN THE PROCESS OF OXIDIZING A TRIALKYLAMINE TO AN AMINE OXIDE BY CONTACTING SAID AMINE WITH HYDROGEN PEROXIDE, THE IMPROVEMENT OF CARRYING OUT SAID OXIDATION IN THE PRESENCE OF AN ALKALI METAL POLYPHOSPHATE AND AN ALKALI METAL BICARBONATE.
Claim 2
Dependent Claim
38 words
IN THE PROCESS OF OXIDIZING A TRIALKYLAMINE TO AN AMINE OXIDE BY CONTACTING SAID AMINE WITH HYDROGEN PEROXIDE, THE IMPROVEMENT OF CARRYING OUT SAID OXIDATION IN THE PRESENCE OF AN ALKALI METAL POLYPHOSPHATE AND AN ALKALI METAL BICARBONATE.
References Cited (Backward Citations)
US3270060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |