Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GOSEI SENRYO GIJUTSU KENKYU KUMIAI
Original Assignee
GOSEI SENRYO GIJUTSU KENKYU KUMIAI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Azo dyestuffs, methods for their preparation and their use as colouring agents in photographic materials in the silver dyestuff bleaching process, and the said photographic materials containing these azo dyestuffs