US3446740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral oil improved in pour point by hydrogenated hydroxy diene polymer
Assignee: Sinclair Research Inc
•
Filing: 1967-10-25
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Granted: 1969-05-27
•
Expires: 1987-10-25
Abstract
No abstract record available.
Inventors
- 👤 David W Young
- 👤 Patrick W Ryan
- 👤 Henry V Isaacson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:34
CPC Classifications
C; C10; C10M; C10M143/00; C10M143/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2551641A
Cited
GB585923A
Cited
US2429582A
Cited
US2792382A
Cited
US2798853A
Cited
US3329613A
Cited
US3312621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |