US3736355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of unsaturated acids
Assignee: Montedison SpA
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Filing: 1969-12-12
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Granted: 1973-05-29
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Expires: 1989-12-12
Abstract
Abstract ALPHA-BETA UNSATURATED OLEFINS, PARTICULARLY PROPYLENE, ARE OZIDIZED IN THE VAPOR PHASE BY MOLECULAR OXYGEN, WITH THE PRODUCTION OF THE CORRESPONDING UNSATURATED CARBOXYLIC ACIDS, PARTICULARLY ACRYLIC ACID.
Inventors
- 👤 M Croci
- 👤 A Croci
- 👤 M Biagioni
- 👤 E Cavaterra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:53
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; B; B01; B01J; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |