Available-for-sale securities whose fair value was not readily determinable as of March 31, 2001 were as follows: Millions of yen Carrying amount: Available-for-sale: Equity securities ................................................................................................... ¥1,461 Other ................................................................................................................... 418 Total ................................................................................................................ ¥1,879 Millions of yen Available-for-sale:  Due after one year through five years ......................................................................... ¥0,306 Due after five years through ten years ........................................................................ 1,846 Total .................................................................................................................... ¥2,152 Millions of yen Carrying Aggregate Unrealized Amount Market Value Gains Current....................................................................................... ¥00,205 ¥00,205 ¥ 000,— Non-current ................................................................................ 26,697 43,159 16,462 Total ...................................................................................... ¥26,902 ¥43,364 ¥16,462 Millions of yen 2001 2000 Current assets ............................................................................................ ¥26,624 ¥17,847 Other assets............................................................................................... 4,095 4,678 Current liabilities......................................................................................... (21,994) (13,600) Other liabilities............................................................................................ (1,680) (1,840) Net assets.............................................................................................. ¥07,045 ¥07,085 Millions of yen 2001 2000 Trade notes and accounts receivable .................................................................. ¥2,024 ¥2,433 Trade notes and accounts payable...................................................................... 1,125 699 Millions of yen 2001 2000 Sales................................................................................................................ ¥9,757 ¥8,068 Purchases......................................................................................................... 8,220 5,912 Sales to and purchases from unconsolidated subsidiaries and associated companies for the years ended March 31, 2001 and 2000 were as follows: Receivables and payables, with respect to transactions with unconsolidated subsidiaries and associated companies, at March 31, 2001 and 2000 were as follows: Certain financial information (unaudited), with respect to unconsolidated subsidiaries and associ- ated companies, at March 31, 2001 and 2000 is as follows: Carrying amounts and aggregate market values of current and non-current marketable equity securities and debt securities included in short-term investments and investment securities at March 31, 2000 were as follows: The carrying values of debt securities by contractual maturities for securities classified as available-for-sale at March 31, 2001 are as follows: Proceeds from sales of available-for-sale securities for the year ended March 31, 2001 were ¥1,065 million. Gross realized gains on these sales, computed on the moving-average cost basis, were ¥6 million. CORPORATE DATA FINANCIAL SECTION REVIEW OF OPERATIONS TOPICS MANAGEMENT PERSPECTIVE FINANCIAL HIGHLIGHTS 5. Investments in Unconsolidated Subsidiaries and Associated Companies 33