Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-04-04
2006-04-04
Wu, David W. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S126000, C526S130000, C502S103000, C502S129000, C502S121000, C502S123000
Reexamination Certificate
active
07022782
ABSTRACT:
A process for producing a homogeneous type solid catalyst component or a homogeneous type solid catalyst comprising a step for removing a fine-powdery component and/or a shapeless component utilizing a difference between their sedimentation velocities of the catalyst component or the catalyst in a solvent.
REFERENCES:
patent: 6054406 (2000-04-01), Smith
patent: 6344528 (2002-02-01), Ushioda et al.
Lee Rip A.
Sumitomo Chemical Company Limited
Wu David W.
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