US2226149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reacting gas mixtures by means of precious metal catalysts
Assignee: Baker and Co Inc
•
Filing: 1939-08-12
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Granted: 1940-12-24
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Expires: 1959-08-12
Abstract
No abstract record available.
Inventors
- 👤 Zimmermann Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/90; B01J23/96; C; C01; C01B; C01B21/00; C01B21/20; C01B21/24; C01B21/26; C01B21/267; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
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) | 1943-12-24 | 1944-06-24 | 1944-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-24 | 1948-06-24 | 1948-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-24 | 1952-06-24 | 1952-12-24 | $7700.00 | Window Closed / Lapsed |