US3366646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation process
Assignee: Shell USA Inc
•
Filing: 1965-06-23
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Granted: 1968-01-30
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Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Dewhirst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:51
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/02; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/24; B01J31/2404; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; 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)
US3110747A
Cited
US3130237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |