Where the sale of subsidiary corporations resulted in the reduction of pension plan participants by less than 20 percent, no partial termination occurred. The 7th U.S. Circuit Court of Appeals affirmed a decision by Judge Joan B. Gottschall. Household International Inc., which owned several subsidiary companies, was a conglomerate until the mid-1980s, when it began to sell off several of the subsidiary companies. Robert J. Matz was employed by one of those subsidiaries, Hamilton Investments Inc. from March 1989 …