s t ra te including a p lura l i ty of hooking stems projecting from the first major surface, the hooking stems each including a distal end; deforming the distal end of each hooking s tem to provide each hooking stem with a hooking por- tion to enable the hooking stem to releasably hook an opposed en- gaging structure; and bonding a plurality of abrasive particles to the second major surface of the substrate with a bonding mate- rial.

COATED A B R A S I V E U.S. Patent 5,840,090. Nov. 24, 1998 K-L. Ho and W.L. Harmer, assignors to 3M Co., St. Paul, Minn.

A high-performance abrasive arti-

c le containing abras ive grains and n o n a b r a s i v e compos i t e grains.

SPLICED A B R A S I V E ARTICLE U.S. Patent 5,840,141. Nov. 24, 1998 G.E. Korbel, assignor to 3M Co., St. Paul, Minn.

A method for splicing a flexible abrasive belt.

SPUTTERING A P P A R A T U S U.S. Patent 5,840,167. Nov. 24, 1998 B-C. Kim, assignor to LG Semicon Co. Ltd., Chungcheongbuk-Do, Rep. of Korea

A sputtering deposition appara- tus and method utilizing charged particles.

ELECTROLYTIC T R E A T M E N T OF FOIL

U.S. Patent 5,840,170. Nov. 24, 1998 A.E. Nagy, assignor to Gould Electronics Inc., Eastlake, Ohio

A method for inhibiting the elec- trodeposition of organic particu- late mat ter on copper foil.

HIGH-GRADE STEEL P ICKL ING U.S. Patent 5,840,173. Nov. 24, 1998 R. Waldmann, assignor to Keramchemie GmbH, Siershahn, Germany

A process for surface t rea tment of material consisting of high-grade steel, the process comprising the steps of subjecting the material to at least one spraying t rea tment with a pickling solution in at least one t rea tment vessel, wherein the pickling solution contains hydro-

VANAIRE IS THE INDUSTRY LEADER IN THE DESIGN, MANUFACTURE, AND THE INSTALLATION OF VENTILATION

AND AIR SCRUBBER EQUIPMENT FOR THE PLATING INDUSTRY

• Control Panels

• Horizontal Scrubbers

• Vertical Scrubbers

• Mist Eliminators

• Centrifugal Exhaust Fans

• Duct Systems

• Hoods

Industries we serve: plating anodizing etching pickling semi conductor & odor control

~ 10151 Bunson Way, Lou~lle, KY 40299 Phone: 502 491-3553 • Fax: 502 491-5182 Web Site: vmw.vanaire.com • E-Mail: info~aire.com

Circle 192 on reader information card

Membrane filtration technologies rejects contaminants ranging from emulsified oils to heavy metals, while recovering your aqueous solution for reuse.

L&T HAS SIMPLE SOLUTION TO YOUR COMPLEX PROBLEMS

A L&T Technologies, Inc.

Phone: 5 0 8 . 5 8 6 - 9 9 7 2 Fax: 5 0 8 - 5 8 6 - 1 6 3 0 E-mai l : t o m k e l l O I (ci~.aol.com

See us at SUP/FIN '99, Booth #816 Circle 170 on reader information card

June 1999 165