Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2008-07-29
2008-07-29
Leszek, Kiliman (Department: 1794)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S407000, C427S384000
Reexamination Certificate
active
07405000
ABSTRACT:
Provided is a resin particle comprising a resin (a) and a filler (b) contained in the particle; the particle has a volume average particle diameter of from 0.1 to 300 μm and a shape factor of from 110 to 300; the particle has an outer shell layer (S) comprising at least a portion of the filler (b); the layer (S) is at least 0.01 μm thick and has a thickness that is ½ or less of the maximum inscribed circle radius of the particle cross section. When used as a toner resin, it is excellent in blade cleaning properties and wide in the fixation temperature range; when employed as a paint additive or a cosmetics additive, it is excellent in masking properties; when used as paper coating additive, it is excellent in ink retention; when utilized as an abrasive, it is excellent in abrasion.
REFERENCES:
patent: 2001-252553 (2001-09-01), None
Ichikawa Tomoyuki
Iwamoto Yasuaki
Kinsho Toshihiko
Mochizuki Satoshi
Noda Hidetoshi
Edwards Angell Palmer & & Dodge LLP
Leszek Kiliman
Ricoh & Company, Ltd.
Sanyo Chemical Industries, Ltd
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