Patent US2193464A successfully refreshed from Google Patents.
US2193464A
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Catalyst for chemical reactions in which participate carbon oxides
Assignee: Individual
•
Filing: 1937-06-09
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Granted: 1940-03-12
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Expires: 1957-06-09
Abstract
No abstract record available.
Inventors
- 👤 Natta Giulio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:53
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/48; B; B01; B01J; B01J23/00; B01J23/06; B01J37/00; B01J37/08; B01J37/082; B01J37/086; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/159; C07C45/51; C07C45/54; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
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) | 1943-03-12 | 1943-09-11 | 1944-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-12 | 1947-09-11 | 1948-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-12 | 1951-09-11 | 1952-03-12 | $7700.00 | Window Closed / Lapsed |