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Zinc oxide-bismuth oxide catalyst
Assignee: Standard Oil Development Co
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Filing: 1944-12-28
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Granted: 1948-02-24
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Expires: 1964-12-28
Abstract
No abstract record available.
Inventors
- 👤 Helmuth G Schneider
- 👤 Vincent F Mistretta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:19
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/002; B; B01; B01J; B01J23/00; B01J23/16; B01J23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1211394A
Cited
US1204141A
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US1577189A
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US1746781A
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US1895528A
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US2370797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |