Invention Grant
US3211757A Symmetrical 4-halogeno-4', 4"-diarylamino-triphenylmethane dyestuffs 失效
对称4-卤代-4',4“ - 二芳基氨基 - 三苯基甲烷染料

  • Patent Title: Symmetrical 4-halogeno-4', 4"-diarylamino-triphenylmethane dyestuffs
  • Patent Title (中): 对称4-卤代-4',4“ - 二芳基氨基 - 三苯基甲烷染料
  • Application No.: US19142262
    Application Date: 1962-05-01
  • Publication No.: US3211757A
    Publication Date: 1965-10-12
  • Inventor: GUSTAV SCHAFERFERDINAND QUINT
  • Applicant: HOECHST AG
  • Assignee: Hoechst AG
  • Current Assignee: Hoechst AG
  • Priority: DEF0033832 1961-05-03
  • Main IPC: C09B11/20
  • IPC: C09B11/20
Symmetrical 4-halogeno-4', 4
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