US3791805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transition metal complexes as fuel and motor oil additives
Assignee: BP Corp North America Inc
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Filing: 1969-10-10
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Granted: 1974-02-12
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Expires: 1989-10-10
Abstract
Abstract The disclosure describes the reaction product produced by the reaction of about equal molar portions of (1) a polymeric succinic anhydride, polymeric succinic acid or polymer succinimide having an average molecular weight between about 250 and 2,500, and (2) a transition metal complexed with a polyamine.
Inventors
- 👤 W Brannen
- 👤 R Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:08
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/301; C10M; C10M159/00; C10M159/12; C10M159/18; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US26433A
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US2464497A
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US2851417A
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US3306908A
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US3338935A
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US3413222A
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US3649661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |