Patent US2403052A successfully refreshed from Google Patents.
US2403052A
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Method for effecting catalytic dehydrogenation processes
Assignee: Shell Development Co
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Filing: 1942-07-17
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Granted: 1946-07-02
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Expires: 1962-07-17
Abstract
No abstract record available.
Inventors
- 👤 Robert M Cole
- 👤 Irving I Shultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:09
CPC Classifications
B; B01; B01J; B01J38/00; B01J38/04; B01J38/12; C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/322; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
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) | 1949-07-01 | 1949-12-31 | 1950-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-01 | 1953-12-31 | 1954-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-01 | 1957-12-31 | 1958-07-02 | $7700.00 | Window Closed / Lapsed |