Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier
Reexamination Certificate
2005-08-02
2005-08-02
Tran, Hien (Department: 1764)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Waste gas purifier
C422S177000
Reexamination Certificate
active
06923942
ABSTRACT:
The invention provides a preform insulating end cone suitable for forming the end cone of a pollution control device. The preform insulating end cone includes a cone shaped intumescent or non-intumescent sheet material. The sheet material has a plurality of slits enabling the sheet material to be cone shaped. A shape retaining element is in intimate contact with the intumescent sheet material. The shape retaining element enables the intumescent sheet material to maintain a cone shape. The invention also provides methods of making preform insulating end cones of the invention.
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Harding Ian R.
Hornback, III Loyd R.
Langer Roger L.
Peisert Joseph C.
Sanocki Stephen M.
3M Innovative Properties Company
Bardell Scott A.
Knecht III Harold C.
Szymanski Brian E.
Tran Hien
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