US1993513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of hydrocarbons
Assignee: Universal Oil Products Co
•
Filing: 1933-07-03
•
Granted: 1935-03-05
•
Expires: 1953-07-03
Abstract
No abstract record available.
Inventors
- 👤 Ipatieff Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:14
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; C07C2/20; C07C2/22; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
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) | 1938-03-04 | 1938-09-03 | 1939-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-03-04 | 1942-09-03 | 1943-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-03-04 | 1946-09-03 | 1947-03-05 | $7700.00 | Window Closed / Lapsed |