发明授权
- 专利标题: Optically active composition, mesomorphic compound and liquid crystal device
- 专利标题(中): 光学活性成分,介晶化合物和液晶装置
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申请号: US302145申请日: 1989-01-27
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公开(公告)号: US4876027A公开(公告)日: 1989-10-24
- 发明人: Kazuo Yoshinaga , Kazuharu Katagiri , Toyoko Kobayashi , Kenji Shinjo
- 申请人: Kazuo Yoshinaga , Kazuharu Katagiri , Toyoko Kobayashi , Kenji Shinjo
- 申请人地址: JPX Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX60-193831 19850904; JPX60-284240 19851219
- 主分类号: C07C323/20
- IPC分类号: C07C323/20 ; C07C327/20 ; C09K19/20 ; C09K19/28 ; G02F1/13
摘要:
4-Alkoxybenzenethiol, bis-(4-alkoxyphenyl)disulfide, and mesomorphic compound deviced therefrom represented by the formula: ##STR1## wherein R.sub.1 is an alkyl or alkoxy group having 1-18 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, 1=1 or 2, and m=0 or 1.
公开/授权文献
- US5907462A Gate coupled SCR for ESD protection circuits 公开/授权日:1999-05-25
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