Oblon, Spivak, McClelland, Maier & Neustadt
Pigments
 Pigment of the general formula: EQU f.Het (I) where F is the cation of a cationic dye which has an absorption maximum at >700 nm and may or may not contain anionic groups and Het is an anion of a heteropolyacid based on tungsten, molybdenum, vanadium or a mixture of these with phosphorus, silicon, cobalt, aluminum, manganese, chromium, nickel or a mixture of these or a copper (I)-hexacyanoferrate(II) anion, are superior to the known IR dyes in terms of thermal stability and photostability, and give optical recording media having superior properties, such as a high signal/noise ratio. 
BASF Aktiengesellschaft
C C C
C09B C09B C09B
inventional inventional inventional
Peter Joachim Helmut Bernhard
Neumann Jesse Flohr Albert