US3338834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing nitrogen and boron-containing lubricating oil additives
Assignee: Chevron USA Inc
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Filing: 1965-11-19
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Granted: 1967-08-29
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Expires: 1985-11-19
Abstract
No abstract record available.
Inventors
- 👤 Andrew D Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:00
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/022; C10; C10M; C10M133/00; C10M133/52; C10M133/56; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/284; C10M2207/285; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/105; C10M2209/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02; C10M2227/06; C10M2227/061; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR PREPARING NITROGEN AND BORON-CONTAINING LUBRICATING OIL ADDITIVE COMBINATIONS WHICH COMPRISES THE STEPS OF (A) REACTING AT A TEMPERATURE OF 300* F. TO 400*F. FROM 2.5 TO 2.75 MOLS OF BORON ACID WITH 1 MOL OF A TERTIARY-ALKYL PRIMARY AMINE HAVING A MOLECULAR WEIGHT OF FROM 250 TO 500, AND (B) MIXING ONE PART OF THE PRODUCT OF STEP A AT A TEMPERATURE OF 300-400*F. WITH FROM 0.5 TO 20 PARTS OF MONOALKENYL SUCCINIMIDE OF TETRAETHYLENEPENTAMINE.
Claim 2
Dependent Claim
78 words
A PROCESS FOR PREPARING NITROGEN AND BORON-CONTAINING LUBRICATING OIL ADDITIVE COMBINATIONS WHICH COMPRISES THE STEPS OF (A) REACTING AT A TEMPERATURE OF 300* F. TO 400*F. FROM 2.5 TO 2.75 MOLS OF BORON ACID WITH 1 MOL OF A TERTIARY-ALKYL PRIMARY AMINE HAVING A MOLECULAR WEIGHT OF FROM 250 TO 500, AND (B) MIXING ONE PART OF THE PRODUCT OF STEP A AT A TEMPERATURE OF 300-400*F. WITH FROM 0.5 TO 20 PARTS OF MONOALKENYL SUCCINIMIDE OF TETRAETHYLENEPENTAMINE.
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |