Patent US2242174A successfully refreshed from Google Patents.
US2242174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating compound manufacture
Assignee: Standard Oil Co
•
Filing: 1938-08-16
•
Granted: 1941-05-13
•
Expires: 1958-08-16
Abstract
No abstract record available.
Inventors
- 👤 Robert E Burk
- 👤 Herman P Lankelma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:35
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/043; C10M2203/00; C10M2207/00; C10M2207/10; C10M2207/24; C10M2211/00; C10M2211/04; C10M2211/044; C10M2219/00; C10M2219/02; C10M2219/022; C10N; C10N2010/00; C10N2010/08; C10N2060/00; C10N2060/04
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) | 1944-05-12 | 1944-11-11 | 1945-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-05-12 | 1948-11-11 | 1949-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-05-12 | 1952-11-11 | 1953-05-13 | $7700.00 | Window Closed / Lapsed |