US3584065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of obtaining 3,4-dichlorobutene-1
Assignee: Kanegafuchi Chemical Industry Co Ltd
•
Filing: 1967-05-08
•
Granted: 1971-06-08
•
Expires: 1987-05-08
Abstract
Abstract A METHOD OF OBTAINING 3,4-DICHLOROBUTENE-1 BY ISOMERIZING 1,4-DICHLOROBUTENE-2 IN THE PRESENCE OF A CATALYST SELECTED FROM THE GOUP CONSISTING OF (1) PALLADIUM, (2) PALLADOUS CHLORIDE, (3) BENZONITRILE AND DIMETHYISULFOXIDE COMPLEXES OF PALADOUS CHLORIDE, (4) BENZONITRILE AND DIMETHYLSULFOXIDE COMPLEXES OF CHLORIDES OF COPPER, ZINC AND IRON, AND (5) MIXTURES THEREOF.
Inventors
- 👤 Akio Oshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:24
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/35; C07C17/358
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |