US1913938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic material and method of producing same
Assignee: Airco Inc
•
Filing: 1929-06-11
•
Granted: 1933-06-13
•
Expires: 1949-06-11
Abstract
No abstract record available.
Inventors
- 👤 Floyd J Metzger
- 👤 Wendell G Fogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:06
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; C; C07; C07C; C07C1/00; C07C1/20; C07C1/24; C07C2521/00; C07C2521/02; C07C2521/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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) | 1936-06-12 | 1936-12-12 | 1937-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-12 | 1940-12-12 | 1941-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-12 | 1944-12-12 | 1945-06-13 | $7700.00 | Window Closed / Lapsed |