Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"HEPPLEWHITE RALPH T" Page 1

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发明授权
Process for introduction of oxygen vacancies in perovskite ferroelectric crystals 失效
Title translation: 氧化铁矿石中的氧气引入过程

公开(公告)号：US3420776A

公开(公告)日：1969-01-07

申请号：US3420776D

申请日：1966-03-10

Applicant: BELL TELEPHONE LABOR INC

Inventor： HEPPLEWHITE RALPH T , KAHNG DAWON

IPC: C30B33/00 , H01G7/02 , C04B35/50

CPC classification number: H01G7/025 , C30B29/32 , C30B33/00

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