Irwin Jacobs said he wants to sell part of Minstar.

The Minneapolis-based investor said that Minstar Inc., the holding company of which he is chairman with a 47% interest, has used up most of its tax credits. Consequently, he told Minneapolis securities analysts, he is searching for a company with a tax loss of $200 million to $300 million to buy part of Minstar. He also said that the Bekins division of Minstar is seeking to sell its California real estate and lease back the properties to raise cash.