US2236910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricant
Assignee: ConocoPhillips Co
•
Filing: 1938-07-11
•
Granted: 1941-04-01
•
Expires: 1958-07-11
Abstract
No abstract record available.
Inventors
- 👤 Bert H Lincoln
- 👤 Gordon D Byrkit
- 👤 Waldo L Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:58
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/22; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/142; C10M2207/28; C10M2207/284; C10M2207/285; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2227/00; C10M2227/08; C10M2227/081; C10M2227/082; C10M2227/083; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2050/00; C10N2050/10
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) | 1944-03-31 | 1944-09-30 | 1945-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-31 | 1948-09-30 | 1949-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-31 | 1952-09-30 | 1953-04-01 | $7700.00 | Window Closed / Lapsed |