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Printed copies of patents are furnished by the Patent and Trademarks Office for $3.00 each. Address orders to: Commissioner of Patents and Trademarks, Washington, D.C. 20231 US. Patent 6,397,491. June 4,2002 JJ Gilbert, Avon, Corm Apparatus for curing ink, paint, and coatings on containers and articles comprising a rotatably mounted assembly that includes a plurality of workpiece stations disposed about the periphery thereof; an ultraviolet radiation emitter disposed next to the periphery of the rotatably mount- ed assembly; means including a mechanical mechanism, for sequentially positioning respec- tive workstations directly in front of the emmiter. U.S. Patent 6,397,896. June 4,2002 T Takahashi, et al., assignors to Usui Kokusai Sangyo Kaisha Ltd., Shizuoka, Japan A heat and corrosion-resistant steel pipe having a multilayered coating comprising a zinc-nickel alloy plating layer deposited on the outer surface and a polyvinyl fluoride layer formed on the alloy plating layer with an epoxy resin there between as an intermediate layer, wherein a nickel plating layer of 0.2 to lO?m thickness is further disposed between the outer surface of the steel pipe and alloy plating layer and wherein the nickel content in the alloy plating layer is 2 to 20%. US. Patent 6,398,002. June 4,2002 R. Choquette, et al., assignors to Otis Elevator Co., Farmington, Conn. A combplate assembly for use with a people-moving device, com- prising a body portion; a plurality of fingers extending away from the body portion; and a colored powder coating on the fingers. US. Patent 6,398,128. June 4,2002 R. J Hamilton and G.P. Ferrazza, assignors to Spraying Systems Co., Wheaton, Ill. A spray nozzle assembly compris- ing a nozzle body and a spray tip adapted for releasable secure- ment to the body US. Patent 6,398,462. June 4,2002 TM. Fulkerson, assignor to Nordson Corp., Westlake, Ohio Apparatus for delivering powder from a powder container to a pow- der spray coater, the apparatus including a source of negative air pressure; a tube including a first lengthwise passage connected to the source of negative air pres- sure and having a powder inlet and a powder outlet; fluidization structure connected with the tube adjacent the powder inlet and including a pressurized air outlet oriented generally toward the powder inlet to direct air general- ly down into the powder container and constructed to prevent sub- stantial radially outward directed air flow from the air outlet, an air diffusing member located at the air outlet for diffusing the air dis- charged from the air outlet, and a source of positive air pressure connected to the air outlet for delivering positively pressurized air to the air outlet and fluidizing the powder as the powder is suc- tioned into the powder inlet by the negative air pressure. US. Patent 6,398,628. June 4,2002 B. B. Groman, Margate, Flu. A micro-abrasive blasting device comprising a chamber having a side wall, a first end wall at one end of the chamber, and a second end wall at an opposite end of the chamber; a gas-receiving port in the second end wall; a gas-deliv- ery conduit disposed within the chamber and extending in fluid communications from the gas- receiving port towards the first end wall; a discharge port in the first end wall; a discharge con- duit disposed within the cham- ber and extending in fluid com- munications through the discharge port external to the chamber, wherein means for flow control is located on the dis- charge conduit. I. Ota, et al., assignors to Nissan Chemicals Industries, Ltd., Tokyo, Japan A composition for polishing alumi- na disks comprising a stable aque- ous silica sol containing monili- form colloidal silica particles. U.S. Patent 6,398,854. June 4,2002 H. Aonuma, assignor to Central Glass Co., Ltd., Ube, Japan A chemical solution for forming a silver film on a substrate com- prising an ammoniac silver nitrate solution; a separate reduc- ing solution containing a reducing agent and a base component; and an additive containing a com- pound of polyvalent metal select- ed from the group consisting of trivalent bismuth, trivalent alu- minum, and trivalent iron, the additive being contained in at least one of the ammoniac silver June2003 141

Steel pipe with multilayered coating

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Printed copies of patents are furnished by the Patent and Trademarks Office for $3.00 each. Address orders to: Commissioner of Patents and Trademarks, Washington, D.C. 20231

US. Patent 6,397,491. June 4,2002 JJ Gilbert, Avon, Corm Apparatus for curing ink, paint, and coatings on containers and articles comprising a rotatably mounted assembly that includes a plurality of workpiece stations disposed about the periphery thereof; an ultraviolet radiation emitter disposed next to the periphery of the rotatably mount- ed assembly; means including a mechanical mechanism, for sequentially positioning respec- tive workstations directly in front of the emmiter.

U.S. Patent 6,397,896. June 4,2002 T Takahashi, et al., assignors to Usui Kokusai Sangyo Kaisha Ltd., Shizuoka, Japan A heat and corrosion-resistant steel pipe having a multilayered coating comprising a zinc-nickel alloy plating layer deposited on the outer surface and a polyvinyl fluoride layer formed on the alloy plating layer with an epoxy resin there between as an intermediate layer, wherein a nickel plating layer of 0.2 to lO?m thickness is further disposed between the outer surface of the steel pipe and alloy plating layer and wherein the nickel content in the alloy plating layer is 2 to 20%.

US. Patent 6,398,002. June 4,2002 R. Choquette, et al., assignors to Otis Elevator Co., Farmington, Conn. A combplate assembly for use with a people-moving device, com- prising a body portion; a plurality of fingers extending away from

the body portion; and a colored powder coating on the fingers.

US. Patent 6,398,128. June 4,2002 R. J Hamilton and G.P. Ferrazza, assignors to Spraying Systems Co., Wheaton, Ill. A spray nozzle assembly compris- ing a nozzle body and a spray tip adapted for releasable secure- ment to the body

US. Patent 6,398,462. June 4,2002 TM. Fulkerson, assignor to Nordson Corp., Westlake, Ohio Apparatus for delivering powder from a powder container to a pow- der spray coater, the apparatus including a source of negative air pressure; a tube including a first lengthwise passage connected to the source of negative air pres- sure and having a powder inlet and a powder outlet; fluidization structure connected with the tube adjacent the powder inlet and including a pressurized air outlet oriented generally toward the powder inlet to direct air general- ly down into the powder container and constructed to prevent sub- stantial radially outward directed air flow from the air outlet, an air diffusing member located at the air outlet for diffusing the air dis- charged from the air outlet, and a source of positive air pressure connected to the air outlet for delivering positively pressurized air to the air outlet and fluidizing the powder as the powder is suc- tioned into the powder inlet by the negative air pressure.

US. Patent 6,398,628. June 4,2002

B. B. Groman, Margate, Flu. A micro-abrasive blasting device comprising a chamber having a side wall, a first end wall at one end of the chamber, and a second end wall at an opposite end of the chamber; a gas-receiving port in the second end wall; a gas-deliv- ery conduit disposed within the chamber and extending in fluid communications from the gas- receiving port towards the first end wall; a discharge port in the first end wall; a discharge con- duit disposed within the cham- ber and extending in fluid com- munications through the discharge port external to the chamber, wherein means for flow control is located on the dis- charge conduit.

I. Ota, et al., assignors to Nissan Chemicals Industries, Ltd., Tokyo, Japan A composition for polishing alumi- na disks comprising a stable aque- ous silica sol containing monili- form colloidal silica particles.

U.S. Patent 6,398,854. June 4,2002 H. Aonuma, assignor to Central Glass Co., Ltd., Ube, Japan A chemical solution for forming a silver film on a substrate com- prising an ammoniac silver nitrate solution; a separate reduc- ing solution containing a reducing agent and a base component; and an additive containing a com- pound of polyvalent metal select- ed from the group consisting of trivalent bismuth, trivalent alu- minum, and trivalent iron, the additive being contained in at least one of the ammoniac silver

June2003 141