US3485755A
Expired / Lapsed
US
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Lubricating compositions including a polymer which contains an ammonium sulfate salt
Assignee: Union Carbide Corp
•
Filing: 1967-09-11
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Granted: 1969-12-23
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Donald C Grimm
- 👤 Leonard Pierce Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:43
CPC Classifications
C; C10; C10M; C10M149/00; C10M149/02; C10M151/00; C10M151/02; C10M2219/00; C10M2219/04; C10M2219/042; C10M2221/00; C10M2221/02; C10M2221/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3278500A
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US3238276A
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US3102862A
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US3265673A
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US3268494A
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US3337458A
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US3354087A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |