US3079232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the oxidation of nitric oxide
Assignee: Engelhard Industries Inc
•
Filing: 1959-06-12
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Granted: 1963-02-26
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Expires: 1979-06-12
Abstract
No abstract record available.
Inventors
- 👤 Holger C Andersen
- 👤 Alfred J Haley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:01
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/38; C01B21/46; C01B21/24; C01B21/26; C01B21/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR OXIDIZING NITRIC OXIDE TO NITROGEN DIOXIDE, WHICH COMPRISES CONTACTING A NITRIC OXIDE- AND OXYGEN-CONTAINING GAS ALSO CONTAINING WATER VAPOR WITH A SUPPORTED CATALYST COMPRISING A CATALYTIC METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, PALLADIUM, RHODIUM AND RUTHENIUM SUPPORTED ON AN OXIDE-CONTAINING CARRIER SELECTED FROM THE GROUP CONSISTING OF ACTIVATED ALUMINA, PUMICE, SILICA GEL, DIATOMACEOUS EARTH, ASBESTOS, TITANIUM DIOXIDE, CLAY AND CALCIUM CARBONATE, THE CATALYTIC METAL BEING PRESENT IN AMOUNT WITHIN THE RANGE OF ABOUT 0.1 TO ABOUT 2 PERCENT BY WEIGHT OF THE CATALYST METAL AND CARRIER, AT A TEMPERATURE IN THE RANGE OF ABOUT 200* C.-450*C. AND A SPACE VELOCITY IN THE RANGE OF ABOUT 5,000 TO 100,000 STANDARD CUBIC FEED OF GAS PER CUBIC ROOT OF CATALYST PER HOUR.
Claim 2
Dependent Claim
125 words
A PROCESS FOR OXIDIZING NITRIC OXIDE TO NITROGEN DIOXIDE, WHICH COMPRISES CONTACTING A NITRIC OXIDE- AND OXYGEN-CONTAINING GAS ALSO CONTAINING WATER VAPOR WITH A SUPPORTED CATALYST COMPRISING A CATALYTIC METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, PALLADIUM, RHODIUM AND RUTHENIUM SUPPORTED ON AN OXIDE-CONTAINING CARRIER SELECTED FROM THE GROUP CONSISTING OF ACTIVATED ALUMINA, PUMICE, SILICA GEL, DIATOMACEOUS EARTH, ASBESTOS, TITANIUM DIOXIDE, CLAY AND CALCIUM CARBONATE, THE CATALYTIC METAL BEING PRESENT IN AMOUNT WITHIN THE RANGE OF ABOUT 0.1 TO ABOUT 2 PERCENT BY WEIGHT OF THE CATALYST METAL AND CARRIER, AT A TEMPERATURE IN THE RANGE OF ABOUT 200* C.-450*C. AND A SPACE VELOCITY IN THE RANGE OF ABOUT 5,000 TO 100,000 STANDARD CUBIC FEED OF GAS PER CUBIC ROOT OF CATALYST PER HOUR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |