Inventor
GRATZFELD EVERHARD
DE4 patents
Patents
4 patentsUS4046861ASep 6, 1977
Process for the production of ferrocyanide blue
DEGUSSA53 citations92
US4378995AApr 5, 1983
Iron blue pigment, process for making the same and use
DEGUSSA45 citations90
US4368075AJan 11, 1983
Iron blue pigment, process for making the same and use
DEGUSSA0 citations49
US4915742AApr 10, 1990
Iron blue pigment, process for its pigmentation and use
DEGUSSA0 citations42