Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2008-01-15
2008-01-15
Le, H. T (Department: 1773)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C428S308400, C428S327000, C428S402000, C521S063000, C521S064000, C521S100000, C521S108000
Reexamination Certificate
active
10471502
ABSTRACT:
Hollow polymer particles are provided to have an average particle diameter of 15 μm or more and 500 μm or less and a 10%-compressive strength of 1.5 MPa or more, and the hollow polymer particle includes a hollow portion in the interior. In addition, a porous ceramic filter is provided by firing a shaped material composed of a mixture in which the above-described hollow polymer particles are mixed to disperse in a ceramic composition.
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Kawaguchi Yasuhiro
Nakata Yasushi
Ohmura Takahiro
Yoshida Takahiro
Frishauf Holtz Goodman & Chick P.C.
Le H. T
Sekisui Chemical Co. Ltd.
Tokuyama Sekisui Co., Ltd.
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