US2963449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for activating a catalyst
Assignee: —
•
Filing: —
•
Granted: 1960-12-06
•
Expires: 1977-12-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:56
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J21/00; B01J21/02; B01J21/04; B01J21/06; B01J21/063; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J37/00; B01J37/02; B01J37/0201; B01J37/0203; B01J37/0207; B01J37/08; B01J37/12; B01J37/14; B01J37/20; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
83 words
A METHOD FOR ACTIVATING A DRY CATALYTIC COMPOSITE OF AN ALUMINA-CONTAINING REFRACTORY INORGANIC OXIDE SUPPORT AND AT LEAST ONE METAL FROM GROUPS VI AND VIII OF THE PERIODIC TABLE, WHICH COMPRISES PASSING AN OXIDE OF NITROGEN THROUGH SAID CATALYTIC COMPOSITE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 25*C. TO ABOUT 1000*C., AND THEREAFTER OXIDIZING SAID CATALYSTIC COMPOSITE IN AN ATMOSPHERE OF AIR, REDUCTING THE OXIDIZED COMPOSITE WITH HYDROGEN, THE OXIDATION AND REDUCTION BEING SUCCESSIVE TREATMENTS AT TEMPERATURES WITHIN THE AFORESAID RANGE.
Claim 2
Independent Claim
83 words
A METHOD FOR ACTIVATING A DRY CATALYTIC COMPOSITE OF AN ALUMINA-CONTAINING REFRACTORY INORGANIC OXIDE SUPPORT AND AT LEAST ONE METAL FROM GROUPS VI AND VIII OF THE PERIODIC TABLE, WHICH COMPRISES PASSING AN OXIDE OF NITROGEN THROUGH SAID CATALYTIC COMPOSITE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 25*C. TO ABOUT 1000*C., AND THEREAFTER OXIDIZING SAID CATALYSTIC COMPOSITE IN AN ATMOSPHERE OF AIR, REDUCTING THE OXIDIZED COMPOSITE WITH HYDROGEN, THE OXIDATION AND REDUCTION BEING SUCCESSIVE TREATMENTS AT TEMPERATURES WITHIN THE AFORESAID RANGE.
Claim 3
Dependent Claim
36 words
THE METHOD OF CLAIM 1 FURTHUR CHARACTERIZED IN THAT SAID COMPOSITE IS CONTACTED WITH THE.OXIDE OF NITROGEN IN THE PRESENCE OF HALOGEN IN AN AMOUNT OF EXCESS OF 0.01% BY WEIGHT, BUT NOT ABOVE ABOUT 8.0%.
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |