Patent US3743607A successfully refreshed from Google Patents.
US3743607A
Expired / Lapsed
US
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Palladium-gold catalyst
Assignee: Knapsack AG
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Filing: 1971-05-21
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Granted: 1973-07-03
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Expires: 1991-05-21
Abstract
Abstract AN IMPROVED CATALYST FOR THE CATALYTIC, VAPOR PHASE PRODUCTION OF VINYL ACETATE FROM ETHYLENE, ACETIC ACID AND MOLECULAR OXYGEN SI SHOWN. A CATALYST FOR THE SYNTHESIS REACTION COMPRISING METALIC PALLADIUM AND AN ALKALI META ACETATE OR FORMATE SUPPORTED ON A CARRIER IS ACTIVATED BY INCLUDING METALLIC GOLD THEREIN. A PREFERRED CATALYST COMPOSITION WHICH SHOWS SUBSTANTIALLY IMPROVED OPERATING CHARACTERISTICS INCLUDES METALLIC PALLADIUM, AN ALKALI METAL ACETATE AND METALLIC GOLD. ANOTHER PREFERRED CATALYST COMPOSITION INCLUDES A LOW MELTING MIXTURE OF AT LEAST TWO ALKALI METAL ACETATES.
Inventors
- 👤 K Sennewald
- 👤 W Vogt
- 👤 H Glaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:51
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; B01J23/48; B01J23/52; B01J23/56; B01J23/58; C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C67/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |