4/12UAS Laboratories Inc.Lakeview Equity PartnersPrivate equity fund, ofMilwaukee, acquired UAS Laboratories, of Eden Prairie, a maker of probiotic supplements.
4/15Clariant AG will acquire assets including Champion Technologies' water assetsMuttenz, Switzerlandoil and gas production chemical services in deep water Gulf of Mexico from Ecolab as a prerequisite for Department of Justice approval of Ecolab's acquisition of Champion Technologies.
4/16Luminart Corp. has acquired the North Dakota operations of Monson Excavation, based in Willmar, Minn.
4/17 Piper Jaffray Cos.Piper Jaffray will acquire Seattle-Northwest Securities, a Minneapolisinvestment banking firm, for $21 million.
4/19 Diversified Resources Inc.will acquire Natural Resource Group,an energy consulting services provider. Stone Arch Capital, Minneapolis, is an investor in Natural Resource Group.
