Patent US1122811A successfully refreshed from Google Patents.
US1122811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making catalysts.
Assignee: Individual
•
Filing: —
•
Granted: 1914-12-29
•
Expires: 1931-12-29
Abstract
No abstract record available.
Inventors
- 👤 Walter O Snelling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:11
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/72
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) | 1917-12-28 | 1918-06-29 | 1918-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-12-28 | 1922-06-29 | 1922-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-12-28 | 1926-06-29 | 1926-12-29 | $7700.00 | Window Closed / Lapsed |