Patent search ap:("STANDARD OIL CO") AND inv:"KETCHUM HAROLD B" Page 1

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发明授权
Flotation of active catalyst from spent catalyst 失效
Title translation: 从废催化剂中浮选活性催化剂

公开(公告)号：US2688401A

公开(公告)日：1954-09-07

申请号：US11866649

申请日：1949-09-29

Applicant: STANDARD OIL CO

Inventor： SCHMITKONS GEORGE E , KETCHUM HAROLD B

IPC: B03D1/06

CPC classification number: B03B5/30 , B03B5/44

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