US3244642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a catalyst composed of tin and antimony oxides
Assignee: Distillers Co Yeast Ltd
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Filing: 1963-05-21
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Granted: 1966-04-05
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Expires: 1983-05-21
Abstract
No abstract record available.
Inventors
- 👤 Gasson Edward James
- 👤 Jenkins Rowland Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:21
CPC Classifications
B; B01; B01J; B01J37/00; B01J21/00; B01J23/00; B01J23/16; B01J23/18; B01J37/0009; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; Y; Y10; Y10S; Y10S502/00; Y10S502/50; Y10S502/504; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR PRODUCING A CATALYST COMPOSITION FOR CATALYZING THE VAPOR PHASE OXIDATION OFPROPYLENE TO ACROLEIN WHICH COMPRISES HEATING A MIXTURE OF OXIDES OF TIN AND ANTIMONY IN AIR AT A TEMPERATURE WITHIN THE RANGE OF FROM 300*C. TO 725*C. FOR FROM 8 TO 16 HOURS, AGAIN HEATING AT FROM 550*C. TO 1100*C. FOR FROM ABOUT 10 TO 32 HOURS, ADDING FROM 2% TO 15% MOLAR ETHYL SILICATE AND HEATING AT FROM 550*C. TO 1100*C. FOR FROM 10 TO 32 HOURS, THE RATIO OF TIN TO ANTIMONY IN THE SAID CATALYST BEING ABOUT 4 TO 1.
Claim 2
Dependent Claim
96 words
A PROCESS FOR PRODUCING A CATALYST COMPOSITION FOR CATALYZING THE VAPOR PHASE OXIDATION OFPROPYLENE TO ACROLEIN WHICH COMPRISES HEATING A MIXTURE OF OXIDES OF TIN AND ANTIMONY IN AIR AT A TEMPERATURE WITHIN THE RANGE OF FROM 300*C. TO 725*C. FOR FROM 8 TO 16 HOURS, AGAIN HEATING AT FROM 550*C. TO 1100*C. FOR FROM ABOUT 10 TO 32 HOURS, ADDING FROM 2% TO 15% MOLAR ETHYL SILICATE AND HEATING AT FROM 550*C. TO 1100*C. FOR FROM 10 TO 32 HOURS, THE RATIO OF TIN TO ANTIMONY IN THE SAID CATALYST BEING ABOUT 4 TO 1.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |