US2937996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricants
Assignee: BP PLC
•
Filing: 1956-03-02
•
Granted: 1960-05-24
•
Expires: 1976-03-02
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Pethrick
- 👤 Sparke Maurice Barrington
- 👤 Critchley Stuart Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:49
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/304; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/102; C10M2209/11; C10M2209/112; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A LUBRICATING COMPOSITION CONSISTING ESSENTIALLY OF A BLEND OF AT LEAST ONE DIESTER SELECTED FROM THE GROUP CONSISTING OF OCTYL NONYL SEBACATE, DIOCTYL SEBACATE AND DINONYL SEBACATE, AND AT LEAST ONE COMPLEX ESTER OF THE FORMULA
Claim 2
Dependent Claim
36 words
A LUBRICATING COMPOSITION CONSISTING ESSENTIALLY OF A BLEND OF AT LEAST ONE DIESTER SELECTED FROM THE GROUP CONSISTING OF OCTYL NONYL SEBACATE, DIOCTYL SEBACATE AND DINONYL SEBACATE, AND AT LEAST ONE COMPLEX ESTER OF THE FORMULA
References Cited (Backward Citations)
US2075107A
Cited
US2628974A
Cited
US2575196A
Cited
US2499984A
Cited
GB687347A
Cited
US2820815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |