Patent US2661335A successfully refreshed from Google Patents.
US2661335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating composition
Assignee: Monsanto Chemicals Ltd
•
Filing: 1951-09-28
•
Granted: 1953-12-01
•
Expires: 1971-09-28
Abstract
No abstract record available.
Inventors
- 👤 Butler John Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:52
CPC Classifications
C; C10; C10M; C10M5/00; C10M2205/00; C10M2205/04; C10N; 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)
US2421082A
Cited
US2282456A
Cited
US2410652A
Cited
GB640566A
Cited
US2572558A
Cited
US2569400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |