US3825600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of unsaturated carbonyl compounds
Assignee: Nippon Shokubai Co Ltd
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Filing: 1971-05-25
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Granted: 1974-07-23
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Expires: 1991-05-25
Abstract
Abstract A PROCESS FOR THE PREPARATION OF UNSATURATED CARBONYL COMPOUNDS WHICH COMPRISES CATALYTICALLY BY OXIDIZING AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTYLENE IN THE VAPOR PHASE IN THE PRESENCE OF CATALYTIC OXIDE IN WHICH THE ATOMIC RATIO AMONG THE CONSTITUENT METALLIC ELEMENTS, CO:FE:BI:W:MO:SI:Z IS WITHIN THE RANGE OF 2.0-20.0:0.1-10.0:0.1-10.0:5-10.0:2.011.5:0.5-15.0:0.005-1.0, WITH THE PROVISO THAT W PLUS MO EQUALS 12.0, AND Z STANDS FOR AN ALKALI METAL.
Inventors
- 👤 Takashi Ohara
- 👤 Michio Ueshima
- 👤 Isao Yanagisawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:31
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/888; B01J23/8885; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; B01J2523/00
Claims Analysis
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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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |