Patent search ap:("ASHLAND OIL INC") AND inv:"HUMPHREYS WILLIAM H" Page 1

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发明授权
Solvent extraction and dewaxing of mineral oils 失效
Title translation: 矿物油的溶剂萃取和脱蜡

公开(公告)号：US2557406A

公开(公告)日：1951-06-19

申请号：US78551447

申请日：1947-11-12

Applicant: ASHLAND OIL INC

Inventor： BLAZER PAUL G , LEAS ARNOLD M , HUMPHREYS WILLIAM H

IPC: C10G73/06 , C10G73/32

CPC classification number: C10G73/06 , C10G73/32

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