Patent US4928672A successfully refreshed from Google Patents.
US2201235A
Expired / Lapsed
US
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Catalyst and process of producing same and process of employing said catalyst in hydrogenation reactions
Assignee: Association of American Soap and Glycerine Producers Inc
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Filing: 1936-08-17
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Granted: 1940-05-21
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Expires: 1956-08-17
Abstract
No abstract record available.
Inventors
- 👤 Lenth Charles William
- 👤 Puis Robert Newell Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:15
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/72
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) | 1943-05-21 | 1943-11-20 | 1944-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-21 | 1947-11-20 | 1948-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-21 | 1951-11-20 | 1952-05-21 | $7700.00 | Window Closed / Lapsed |