Patent US3489786A successfully refreshed from Google Patents.
US3489786A
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Hydrogenation process
Assignee: Shell USA Inc
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Filing: 1964-12-10
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Granted: 1970-01-13
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Expires: 1984-12-10
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Dewhirst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:33
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30; B; B01; B01J; B01J31/00; B01J31/16; B01J31/24; B01J31/2404; C07C255/00; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/643; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |