Patent US2021567A successfully refreshed from Google Patents.
US2021567A
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Catalyst and process of hydrogenating organic compounds
Assignee: EIDP Inc
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Filing: 1931-11-06
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Granted: 1935-11-19
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Expires: 1951-11-06
Abstract
No abstract record available.
Inventors
- 👤 Anthony M Muckenfuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:22
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/122; C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; C10; C10G; C10G45/00; C10G45/02; C10G45/04; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/646
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) | 1938-11-18 | 1939-05-20 | 1939-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-18 | 1943-05-20 | 1943-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-18 | 1947-05-20 | 1947-11-19 | $7700.00 | Window Closed / Lapsed |