US2651657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricating oil
Assignee: Standard Oil Development Co
•
Filing: 1949-05-21
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Granted: 1953-09-08
•
Expires: 1969-05-21
Abstract
No abstract record available.
Inventors
- 👤 Louis A Mikeska
- 👤 Lawrence T Eby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:39
CPC Classifications
C; C07; C07C; C07C68/00; C07C68/06; C07C68/02; C10; C10M; C10M107/00; C10M107/20; C10M107/30; C10M107/32; C10M107/34; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/32; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2209/106; C10M2209/107; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/08; C10M2219/082; C10M2219/084; C10M2221/00; C10M2221/04; C10M2221/043; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
AS A NEW COMPOSITION OF MATTER A COMPOUND OF THE FORMULA-
Claim 2
Dependent Claim
11 words
AS A NEW COMPOSITION OF MATTER A COMPOUND OF THE FORMULA-
References Cited (Backward Citations)
DE459311C
Cited
US2153137A
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US2379252A
Cited
US2381511A
Cited
US2520733A
Cited
US2476631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |