acid or oxidizing agent through curing treatment, characterized in that the heat-resistant resin particles have an average particle size of not more than 1.5 ?m.

POLYESTER POWDER COATING U.S. Patent 6,261,690. July 17,200l

K. Blatter and Z? Simon, assignors to

Aventis Research & Technology

GmbH & Co. KG, Frankfurt am

Main, Germany

Polyester particles having a mean particle size less than 50 ?m, which are homogeneously colored and spherical, have a monomodal particle size distribution, and which after melting form a con- tinuous coating.

PAINT BOOTH TREATING AGENT US. Patent 6,262,012. July 17,200l

K. Mizuno et al., assignors to Kurita

Water Zndustries Ltd., Tokyo, and

Toyota Jidosha KK, Toyota, both of

Japan

A wet paint spray booth treating agent comprising sepiolite and amphoteric metal compound, the amphoteric metal compound being at least one selected from the group consisting of polyaluminum chloride, aluminum sulfate, polya- luminum hydroxychloride, pseudoboehmite alumina sol, fer- ric chloride, and zinc chloride.

CATIONIC EPOXV ELECTROCOAT- ING COMPOSlTlON US. Patent 6,262,146. July 17,200l

H. Sakamoto et al., assignors to

Nippon Paint Co., Ltd., Osaka, Japan

An aliphatic hydrocarbon group containing resin composition for cationic electrocoating, which com- prises a skeleton of epoxy resin.

POWDER SPRAY APPARATUS US. Patent 6,264,745. July 24,200l

W Diaz, assignor to Wagner Systems,

Inc., Glendale Heights, 111.

A powder spray apparatus com- prising a spray booth having a floor, the spray booth receiving workpieces to be sprayed with powder, a portion of the powder being entrained in air in the spray booth, another portion of the powder settling on the floor; and a cyclone particulate separat- ing system for separating spent powder from the air in which it is suspended.

PLATING FLUID REPLENISHMENT SYSTEM US. Patent 6,264,806. July 24,200l

R. Kaufman and N.A. Butler, assig-

nors to Technic Inc., Cranston, R.Z.

A system for plating a surface of

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July 2002 61