US3522180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil compositions containing amorphous ethylene-propylene copolymers
Assignee: Texaco Inc
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Filing: 1967-09-28
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Granted: 1970-07-28
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Expires: 1987-09-28
Abstract
No abstract record available.
Inventors
- 👤 William M Sweeney
- 👤 David D Reed
- 👤 Elmer E Schallenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:35
CPC Classifications
C; C10; C10M; C10M143/00; C10M143/04; C08; C08F; C08F210/00; C10M2205/00; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 0
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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) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |