Patent US3578702A successfully refreshed from Google Patents.
US3578702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing alpha,beta-unsaturated organic compounds
Assignee: Eastman Kodak Co
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Filing: 1965-12-03
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Granted: 1971-05-11
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Expires: 1985-12-03
Abstract
Abstract A PROCESS FOR PRODUCING A,B-UNSATURATED ORGANIC COMPOUNDS WHICH COMPRISES CONTACTING FORMALDEHYDE AND A SATURATED ORGANIC ESTER, ALDEHYDE, KETONE OR NITRILE IN THE VAPOR PHASE IN THE PRESENCE OF ONE OR MORE INORGANIC OXIDES OF RARE EARTH METALS OF THE LANTHANIDE SERIES IMPREGNATED ON AN INERT SUPPORT SUCH AS SILICA GEL.
Inventors
- 👤 Thomas Carter Snapp Jr
- 👤 Alden E Blood
- 👤 Hugh John Hagemeyer Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:13
CPC Classifications
C; C07; C07C; C07C255/00; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/75
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |