Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2003-07-01
2009-12-08
Cheung, William K (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S318000, C526S320000, C526S326000, C526S329700, C526S332000, C347S001000, C523S161000
Reexamination Certificate
active
07629427
ABSTRACT:
The invention provides a block polymer compound enabling satisfactory dispersion of a colorant in a solvent, and an ink composition containing such block polymer compound. The block polymer compound of the invention is a block polymer compound having at least three block segments, comprising block segments A, B and C arranged in succession, wherein the block segment C is most solvent attractive while the block segment A is most solvent repulsive, and at least either one of the block segments includes an ionic group or an acidic group.
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Ikegami Masayuki
Nakazawa Ikuo
Sato Koichi
Suda Sakae
Tsubaki Keiichiro
Canon Kabushiki Kaisha
Cheung William K
Fitzpatrick ,Cella, Harper & Scinto
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