US2512653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing cr2o3-hydrogenating metal oxide catalysts
Assignee: Givaudan Roure Corp
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Filing: 1945-04-10
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Granted: 1950-06-27
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Expires: 1965-04-10
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Kapecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:48
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE PROCESS OF MAKING CATALYST, WHICH COMPRISES FORMING A FLOWABLE HOMOGENEOUS MIXTURE CONSISTING ESSENTIALLY OF FROM ABOUT 1 TO ABOUT 3 MOLS OF CHROMIUM TRIOXIDE AND FROM ABOUT 1 TO ABOUT 2 MOLS OF AT LEAST ONE ACETATE OF A METAL SELECTED FROM ZINC, COPPER AND CADMIUM AND MIXTURES THEREOF, AND DECOMPOSING SAID MIXTURE BY HEATING AT ABOUT 95* TO 300*C.
Claim 2
Dependent Claim
61 words
THE PROCESS OF MAKING CATALYST, WHICH COMPRISES FORMING A FLOWABLE HOMOGENEOUS MIXTURE CONSISTING ESSENTIALLY OF FROM ABOUT 1 TO ABOUT 3 MOLS OF CHROMIUM TRIOXIDE AND FROM ABOUT 1 TO ABOUT 2 MOLS OF AT LEAST ONE ACETATE OF A METAL SELECTED FROM ZINC, COPPER AND CADMIUM AND MIXTURES THEREOF, AND DECOMPOSING SAID MIXTURE BY HEATING AT ABOUT 95* TO 300*C.
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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) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |