InvestmentsTop Global NewsMarketsReal Estate Carlyle to buy Japanese testing-tools maker Rigaku to help IPO pursuit By financialnews_rlv83x - January 6, 2021 0 57 U.S. buyout firm Carlyle Group said on Wednesday it will buy Japan’s Rigaku Corp, confirming a media report from earlier in the day that put the deal value at about US$1 billion, as the manufacturer of X-ray-based testing tools plans to go public.