US3170898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil compatible polyesters
Assignee: Sinclair Research Inc
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Filing: 1959-10-08
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Granted: 1965-02-23
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Expires: 1979-10-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Verdol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:55
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/04; C10M2217/042; C10M2217/043; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2070/00; C10N2070/02; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A POLYESTER COMPATIBLE WITH MINERAL LUBRICATING OILS, SAID POLYESTER BEING CHARACTERIZED BY THE FORMULA:
Claim 2
Dependent Claim
14 words
A POLYESTER COMPATIBLE WITH MINERAL LUBRICATING OILS, SAID POLYESTER BEING CHARACTERIZED BY THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |