US3341471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attrition resistant solid catalysts
Assignee: Standard Oil Co
•
Filing: 1963-05-09
•
Granted: 1967-09-12
•
Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 James L Callahan
- 👤 Warren R Knipple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:43
CPC Classifications
B; B01; B01J; B01J21/00; B01J23/00; B01J23/16; B01J23/18; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/644; B01J23/6445; B01J23/66; B01J23/68; B01J23/681; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8435; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1815; B01J37/00; B01J37/0009; C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; C07C5/00; C07C5/42; C07C5/48; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S502/00; Y10S502/50; Y10S502/503; Y10S502/504; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
115 words
THE PROCESS FOR PREPARING AN ATTRITION RESISTANT SOLID OXIDATION CATALYST COMPRISING THE STEPS OF (A) ACTIVATING AT A TEMPERATURE OF FROM ABOUT 1000* F. TO ABOUT 2000*F. IN AN OXIDIZING ATMOSPHERE AN OXIDATION CATALYST PER SE OR SAID CATALYST ON A CARRIER SAID CATALYST CONSISTING ESSENTIALLY OF THE COMBINED OXIDES OF THE METALS ANTIMONY AND M WHEREIN M IS AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF URANIUM, IRON, MANGANESE, THORIUM, CERIUM, MOLYBEDNUM AND TIN AND REDUCING THE RESULTING CATALYST TO A FINE POWDER AND (B) MIXING THE POWDER FROM (A) WITH AN AQUEOUS SILICA SOL, DRYING AND HEAT TREATING THE RESULTING MIXTURE AT A TEMPERATURE OF FOM ABOUT 750*F. TO ABOUT 2000*F.
Claim 2
Dependent Claim
115 words
THE PROCESS FOR PREPARING AN ATTRITION RESISTANT SOLID OXIDATION CATALYST COMPRISING THE STEPS OF (A) ACTIVATING AT A TEMPERATURE OF FROM ABOUT 1000* F. TO ABOUT 2000*F. IN AN OXIDIZING ATMOSPHERE AN OXIDATION CATALYST PER SE OR SAID CATALYST ON A CARRIER SAID CATALYST CONSISTING ESSENTIALLY OF THE COMBINED OXIDES OF THE METALS ANTIMONY AND M WHEREIN M IS AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF URANIUM, IRON, MANGANESE, THORIUM, CERIUM, MOLYBEDNUM AND TIN AND REDUCING THE RESULTING CATALYST TO A FINE POWDER AND (B) MIXING THE POWDER FROM (A) WITH AN AQUEOUS SILICA SOL, DRYING AND HEAT TREATING THE RESULTING MIXTURE AT A TEMPERATURE OF FOM ABOUT 750*F. TO ABOUT 2000*F.
Claim 3
Dependent Claim
47 words
THE ATTRITION RESISTANT CATALYST PREPARED BY THE PROCESS OF CLAIM 1 SAID CATALYST BEING FURTHER CHARACTERIZED AS HAVING A COMPRESSIVE STRENGTH GREATER THAN THIRTY POUNDS AT FAILURE AS DETERMINED ON PARTICLES OF SAID CATALYST WHICH ARE ABOUT 4MM. IN DIAMETER AND 5 TO 6 MM. IN LENGTH.
References Cited (Backward Citations)
US2904580A
Cited
US3197419A
Cited
US3200084A
Cited
US3200081A
Cited
GB876446A
Cited
US3198750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |