US3449249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions
Assignee: Shell USA Inc
•
Filing: 1964-05-08
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Granted: 1969-06-10
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Expires: 1984-05-08
Abstract
No abstract record available.
Inventors
- 👤 William S Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:27
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07C; C07C11/00; C07C11/02; C08; C08F; C08F8/00; C08F8/04; C08F8/50; C10M2205/00; C10M2205/02; C10M2205/028; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/044; C10M2217/045; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2221/00; C10M2221/02; C10N; C10N2050/00; C10N2050/015; C10N2050/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND FROM ABOUT 0.2 TO ABOUT 10% BY WEIGHT OF A DISPERSANT CONSISTING ESSENTIALLY OF THE ADDITION PRODUCT OF (1) POLY(3-METHYLBUTENE-1) IN WHICH A MAOR PROPORTION OF THE POLYMER CONSISTS OF
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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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |