Patent US3300528A successfully refreshed from Google Patents.
US3300528A
Expired / Lapsed
US
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Vapor phase process for preparing vinyl acetate by the oxidation of ethylene with a group viii noble metal plus copper or iron
Assignee: Asahi Kasei Corp
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Filing: 1963-10-09
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Granted: 1967-01-24
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Expires: 1983-10-09
Abstract
No abstract record available.
Inventors
- 👤 Wakasa Ryoichi
- 👤 Kominami Naoya
- 👤 Ishii Kanji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:51
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/38; B01J23/48; B01J23/50; B01J23/54; B01J23/56; C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C67/055
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
A PROCESS WHICH COMPRISES PASSING A GASEOUS MIXTURE OF ACETIC ACID, ETHYLENE AND A MOLECULAR OXYGEN CONTAINING GAS IN A REACTION ZONE OVER A CATALYST CONSISTING OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF PALLADIUM, PLATINUM, RHODIUM, RUTHENIUM, AND IRIDIUM, TOGETHER WITH COPPER.
Claim 2
Dependent Claim
46 words
A PROCESS WHICH COMPRISES PASSING A GASEOUS MIXTURE OF ACETIC ACID, ETHYLENE AND A MOLECULAR OXYGEN CONTAINING GAS IN A REACTION ZONE OVER A CATALYST CONSISTING OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF PALLADIUM, PLATINUM, RHODIUM, RUTHENIUM, AND IRIDIUM, TOGETHER WITH COPPER.
Claim 3
Dependent Claim
46 words
A PROCESS WHICH COMPRISES PASSING A GASEOUS MIXTURE OF ACETIC ACID, ETHYLENE AND A MOLECULAR OXYGEN CONTAINING GAS IN A REACTION ZONE OVER A CATALYST CONSISTING OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF PALLADIUM PLATINUM, RHODIUM, RUTHENIUM AND IRRIDIUM, TOGETHER WITH IRON.
Claim 4
Dependent Claim
46 words
A PROCESS WHICH COMPRISES PASSING A GASEOUS MIXTURE OF ACETIC ACID, ETHYLENE AND A MOLECULAR OXYGEN CONTAINING GAS IN A REACTION ZONE OVER A CATALYST CONSISTING OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF PALLADIUM PLATINUM, RHODIUM, RUTHENIUM AND IRRIDIUM, TOGETHER WITH IRON.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |