US2034077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and method for preparing same
Assignee: EIDP Inc
•
Filing: 1932-01-27
•
Granted: 1936-03-17
•
Expires: 1952-01-27
Abstract
No abstract record available.
Inventors
- 👤 Herrick R Arnold
- 👤 Wilbur A Lazier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:29
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/03; B01J37/031; B01J21/00; B01J23/00; B01J23/70; B01J23/72; B01J27/00; B01J27/20; B01J27/22
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) | 1939-03-17 | 1939-09-16 | 1940-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-17 | 1943-09-16 | 1944-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-17 | 1947-09-16 | 1948-03-17 | $7700.00 | Window Closed / Lapsed |