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Itabashi; Tadashi
Tokyo, JP
No. of patents:

Patent Number Title Of Patent Date Issued
5854323 Pigment dispersing agent, composition containing the same, and aqueous pigment dispersion December 29, 1998
The present invention provide an aqueous type pigment dispersing agent having one portion which has a high affinity with a pigment and which has at least one type of selected from the group consisting of an organic dye, anthraquinone and acridone and only at a terminal end or at both ter
5698618 Coating composition December 16, 1997
A coating composition is formed from an acid-set coating varnish and a pigment composition. The pigment composition includes a specific organic dyestuff derivative and a specific basic-group-containing resin-type pigment dispersant. The coating composition excels in pigment dispersib
5635552 Method for dispersing pigment and water-based pigment dispersion June 3, 1997
A method is disclosed for dispersing a pigment to obtain a pigment dispersion. The method involves dispersing 100 parts by weight of a pigment, 0.1 to 30 parts by weight of a specific pigment dispersing agent and 5 to 300 parts by weight of a water-based resin in 100 to 2,000 parts b

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