US2331923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of compounds for lubricants, etc.
Assignee: Standard Oil Co
•
Filing: 1941-01-30
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Granted: 1943-10-19
•
Expires: 1961-01-30
Abstract
No abstract record available.
Inventors
- 👤 John M Musselman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:33
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2223/00; C10M2223/12; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08
Claims Analysis
Total Claims: 0
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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) | 1946-10-18 | 1947-04-19 | 1947-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-10-18 | 1951-04-19 | 1951-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-10-18 | 1955-04-19 | 1955-10-19 | $7700.00 | Window Closed / Lapsed |