- Patent JPH0222793

Document Type and Number:

Japanese Patent JPH0222793

Kind Code:

B2

Inventors:

IKEMATSU MASAKI
PPONJO ISAO
SAKAI KAZUO

Application Number:

JP5393482A

Publication Date:

May 21, 1990

Filing Date:

April 02, 1982

Export Citation:

Assignee:

NIPPON OIL CO LTD

International Classes:

C10G21/27; C10C3/00

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