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US3454644A
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Homogeneous hydrogenation process employing a complex of ruthenium or osmium as catalyst
Assignee: Shell USA Inc
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Filing: 1966-05-09
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Granted: 1969-07-08
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Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Dewhirst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:28
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/0006; C07F15/0046; C07F15/0053; C07C; C07C209/00; C07C209/44; C07C209/48; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/141; C07C45/00; C07C45/61; C07C45/62; C08; C08C; C08C19/00; C08C19/02; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3110747A
Cited
US3130237A
Cited
US3152184A
Cited
US3324018A
Cited
US3270087A
Cited
US3366646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |