Anthrapyridone compound, water-based magenta ink...

Compositions: coating or plastic – Coating or plastic compositions – Marking

Reexamination Certificate

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C106S031770, C546S076000, C347S100000

Reexamination Certificate

active

06902607

ABSTRACT:
The ink composition comprises as its coloring matter component a water-based magenta composition containing anthrapyridone compound represented by the formula (1):wherein R represents hydrogen atom or methyl group; X represents phenyl group, phenoxy group or halogen atom; and n is an integer of 1 to 4, or salt thereof.

REFERENCES:
patent: 2644821 (1953-07-01), Albin et al.
patent: 2759939 (1956-08-01), Bucheler et al.
patent: 6460988 (2002-10-01), Mafune et al.
patent: 6706100 (2004-03-01), Mafune et al.
patent: 2002/0011178 (2002-01-01), Kanke et al.
patent: 1 063 268 (2000-12-01), None
patent: 2-16171 (1990-01-01), None
Copy of the International Search Report dated Aug. 13, 2002.
Copy of the European Search Report dated Dec. 21, 2004.
Copy of the Chinese Office Action dated Nov. 26, 2004.

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