Patent US2226535A successfully refreshed from Google Patents.
US2226535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kiln
Assignee: ExxonMobil Oil Corp
•
Filing: 1940-04-06
•
Granted: 1940-12-31
•
Expires: 1960-04-06
Abstract
No abstract record available.
Inventors
- 👤 John W Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:56
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/06; B01J8/067; B01J20/00; B01J20/02; B01J20/10; B01J20/12; B01J20/30; B01J20/34; B01J20/3433; B01J20/345; B01J20/3458; B01J20/3483; C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/336; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00088; B01J2208/00106; B01J2208/00115; B01J2208/00132; B01J2208/00504
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) | 1943-12-31 | 1944-07-01 | 1944-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-31 | 1948-07-01 | 1948-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-31 | 1952-07-01 | 1952-12-31 | $7700.00 | Window Closed / Lapsed |