Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2004-08-19
2009-12-01
Wu, David (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S847000, C524S571000, C428S402000, C523S223000, C523S352000, C523S333000
Reexamination Certificate
active
07625971
ABSTRACT:
Disclosed are silica-filled rubber granules comprised of a cocoagulation product of rubber and silica, which are extremely less powdery and excellent in handling and kneading, as well as an industrially advantageous process for producing same. The silica-filled rubber granules of the present invention are dried granules of a cocoagulation product of rubber and silica particles, which are characterized in that an average particle diameter (D50) in terms of the sieve analysis is 300˜3000 μm and the weight ratio of the granules within the range of D50±(D50×0.5) is at least 50% by weight. The silica-filled rubber granules are produced by supplying a cake of a cocoagulation product of silica and rubber having a water content of 40˜80% by weight to a drier provided with an indirect-heating type container having stirring wing blades, and then drying the cake while stirring it with the stirring wing blade.
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patent: 2003-286369 (2003-10-01), None
JP 2003-286369 (Oct. 2003) abstract and translation in English.
International Search Report dated Sep. 28, 2004 of PCT/JP2004/012242.
Chino Yoshihiro
Fukahori Takahiko
Karato Takeshi
Sugimura Tsunetoshi
Tokunaga Shinji
Lee Rip A.
Tokuyama Corporation
Westerman Hattori Daniels & Adrian LLP
Wu David
Zeon Corporation
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