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1.发明授权
公开(公告)号：US2620361A
公开(公告)日：1952-12-02
申请号：US13196649
申请日：1949-12-09
Applicant: STANDARD OIL DEV CO
Inventor： KARCHMER JEAN H
IPC: B01J27/18
CPC classification number: B01J27/1815
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公开(公告)号：US2693443A
公开(公告)日：1954-11-02
申请号：US22727451
申请日：1951-05-19
Applicant: STANDARD OIL DEV CO
Inventor： WADDELL MATHIS T , KARCHMER JEAN H
IPC: C07C7/148
CPC classification number: C07C7/1485 , C07C9/08
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