| (19) |
 |
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(11) |
EP 0 814 148 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
14.01.1998 Bulletin 1998/03 |
| (43) |
Date of publication A2: |
|
29.12.1997 Bulletin 1997/52 |
| (22) |
Date of filing: 20.12.1993 |
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| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
21.12.1992 JP 356302/92
03.12.1993 US 162681
|
| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
|
93310287.3 / 0609623 |
| (71) |
Applicant: ORONITE JAPAN LIMITED |
|
Tokyo (JP) |
|
| (72) |
Inventors: |
|
- Nakazato, Morikuni
Ogasa-gun,
Shizuoka Prefecture (JP)
- Magarifuchi, Jiro
Yokohama,
Kanagwa Prefecture (JP)
- Isozaki, Yoshifuni
Ogasa-gun,
Shinzuoka Prefecture (JP)
|
| (74) |
Representative: Nash, David Allan |
|
Haseltine Lake & Co.,
Imperial House, 15-19 Kingsway
London WC2B 6UD
London WC2B 6UD (GB) |
|
| |
|
|
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Remarks: |
|
This application was filed on 22 - 09 - 1997 as a divisional application to the application
mentioned under INID code 62. |
|
| (54) |
Low phosphorous engine oil compositions and additive compositions |
(57) An engine oil composition which comprises a metal-containing detergent, zinc dithiophosphate,
and a boron-containing ashless dispersant dissolved or dispersed in a base oil; characterized
by further containing an antiwear agent having an aliphatic amide compound and either
a dithiocarbamate compound or an ester derived from a fatty acid and boric acid.