US3265636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for the hydrogenation of nitro compounds
Assignee: EIDP Inc
•
Filing: 1963-03-26
•
Granted: 1966-08-09
•
Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 Spiegler Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:34
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J21/00; B01J21/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3127356A
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US2716135A
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US2768209A
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US2797244A
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US2914488A
Cited
US2911375A
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US3073865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |