US2209908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact mass for use in the catalytic vapor phase oxidation of organic compounds
Assignee: CALORIDER Corp
•
Filing: 1938-07-14
•
Granted: 1940-07-30
•
Expires: 1958-07-14
Abstract
No abstract record available.
Inventors
- 👤 John M Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:06
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/31; C07C51/313; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1943-07-30 | 1944-01-29 | 1944-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-30 | 1948-01-29 | 1948-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-30 | 1952-01-29 | 1952-07-30 | $7700.00 | Window Closed / Lapsed |