Patent US2999074A successfully refreshed from Google Patents.
US2999074A
Expired / Lapsed
US
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Catalyst compositions
Assignee: Universal Oil Products Co
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Filing: 1956-09-11
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Granted: 1961-09-05
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Expires: 1976-09-11
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:56
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/128; B01J27/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AS A NEW COMPOSITION OF MATTER, CALCINED AND REDUCED COMPOSITE OF A REFRACTORY OXIDE CONTAINING CHEMICALLY COMBINED HYDROXYL GROUPS AND FROM ABOUT 0.01% TO ABOUT 2% BY WEIGHT OF A PLATINUM GROUP METAL, SAID CALCINED COMPOSITE BEING IMPREGNATED WITH FROM ABOUT 10% TO ABOUT 100% BY WEIGHT OF AN ANHYDROUS FRIEDELCRAFTS METAL HALIDE IN WHICH THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AND SAID HYDROXYL GROUPS HAVING BEEN REACTED WITH THE METAL HALIDE IN A REACTION RESULTING IN THE ELIMINATION FROM THE COMPOSITE OF AT LEAST 0.5 MOL BUT NOT MORE THAN 2.0 MOLS OF HYDROGEN HALIDE PER MOL OF FRIEDEL-CRAFTS METAL HALIDE ADSORBED THEREON.
Claim 2
Dependent Claim
110 words
AS A NEW COMPOSITION OF MATTER, CALCINED AND REDUCED COMPOSITE OF A REFRACTORY OXIDE CONTAINING CHEMICALLY COMBINED HYDROXYL GROUPS AND FROM ABOUT 0.01% TO ABOUT 2% BY WEIGHT OF A PLATINUM GROUP METAL, SAID CALCINED COMPOSITE BEING IMPREGNATED WITH FROM ABOUT 10% TO ABOUT 100% BY WEIGHT OF AN ANHYDROUS FRIEDELCRAFTS METAL HALIDE IN WHICH THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AND SAID HYDROXYL GROUPS HAVING BEEN REACTED WITH THE METAL HALIDE IN A REACTION RESULTING IN THE ELIMINATION FROM THE COMPOSITE OF AT LEAST 0.5 MOL BUT NOT MORE THAN 2.0 MOLS OF HYDROGEN HALIDE PER MOL OF FRIEDEL-CRAFTS METAL HALIDE ADSORBED THEREON.
References Cited (Backward Citations)
US2277512A
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US2311713A
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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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |