| 1964 | Dec. | IMS Japan A.G. established (Parent company: IMS International, Inc.) |
| 1965 | Jun. | First edition of Japan Pharmaceutical Market (JPM) |
| 1970 | Feb. | First edition of Japan Medical Data Index-G.P. (JMDG) |
| 1972 | Mar. | First edition of Japan Detailing Index (JDI) |
| Sep. | IMS International, Inc. lists on NY Stock Exchange | |
| 1974 | Mar. | First edition of Foreign Origin Pharmaceutical Market in Japan (FOP) |
| 1975 | Sep. | First edition of Japan Hospital Pharmaceutical Market (JHPM) |
| 1976 | Sep. | IMS Japan A.G. joins Federation of Japan Pharmaceutical Wholesalers Association as an associate member |
| 1978 | Mar. | First edition of Japan Medical Data Index-Hospital (JMDH) |
| 1980 | May | First edition of Drug Information Service (DIS) |
| 1981 | Jun. | Launch of Japan Pharmaceutical Market online database service (DBS-JPM) |
| 1982 | Sep. | First edition of Japan Pharmaceutical Diagnosis Market (JPDM) |
| 1983 | Apr. | Launch of Japan Medical Data Index online database service (DBS-MDI) |
| May | First edition of Japan Detailing Index-Wholesaler (JDIW) | |
| Aug. | Company reorganized as a Japanese corporation; name changed to IMS Japan Ltd. | |
| Sep. | First SYSTEM 100 seminar | |
| 1986 | Apr. | Launch of Multinational Integrated Data Analysis System (MIDAS) |
| Aug. | First edition of Japan Regional Sales Report (JRSR) | |
| 1988 | May | IMS International, Inc. becomes part of D&B (The Dun & Bradstreet Corporation) |
| Jun. | First In-house Training Course | |
| 1990 | Mar. | First edition of Japan G.P. Pharmaceutical Market (JGPM) |
| Oct. | Launch of Japan Regional Sales Report online database service (DBS-JRSR) | |
| 1993 | Aug. | Name changed to IMS Japan K.K. |
| 1994 | Aug. | Launch of Japan Sales Territory Report online database service (DBS-JSTR) |
| 1995 | Jun. | First Marketing Data Analysis course |
| 1996 | Jun. | Collective prefix of online services changed from DBS (database) to IMSBase |
| Nov. | Japan becomes part of Cognizant Corporation pursuant to the breakup of D&B; formation of Cognizant Japan K.K. | |
| 1997 | Jul. | Launch of IMSBase-JCPM and IMSBase-JDI services |
| Aug. | Launch of IMSBase-JPM, IMSBase-JRSR, and IMSBase-JSTR services | |
| Dec. | Merger with parent company Cognizant Japan K.K.; name changed to IMS Cognizant Japan K.K. | |
| 1998 | May | Name changed to IMS Japan K.K. pursuant to the breakup of parent company, Cognizant Corporation |
| May | Online network formed linking IMS with participating pharmaceutical wholesalers nationwide. Monthly magnetic tapes replaced with shift to daily collection of electronic data | |
| Jul. | Cognizant Corporation (parent company) split up; IMS Health Incorporated becomes the parent company | |
| Jul. | Launch of IMSBase-Flash-JPM/JRSR services | |
| Sep. | Parent company IMS Health Incorporated acquires PMSI (Pharmaceutical Marketing Services Inc.) | |
| 1999 | Feb. | Launch of IMSBase-MDI service |
| 2000 | Apr. | Launch of DBS-ScripTrac |
| 2003 | May | Tatsuyuki Saeki appointed President |
| 2005 | Apr. | Launch of services of Japan Customer Coverage (JCC), Japan Regional Customer Coverage (JRCC) and IMSBase JRCC |
| Apr. | Launch of DDD-Japan service | |
| 2006 | Apr. | Launch of IMSBase JDI-Monthly service |
| Nov. | Launch of IMS Promo.Mix and IMS Promo.Cast from IMS Promo.360, a suite of promotion management solution offerings | |
| 2007 | Jun. | Launch of Anshin-Shoho infobox |
| Jul. | Acquisition of Datasurf Co. | |
| Sep. | Launch of DDD A{ service. | |
| 2008 | Jan. | Launch of Tactical Marketing Course service. |
| Mar. | Launch of IMS Promo.Track service. | |
| Jul. | ISO 9001 Certified. | |
| 2009 | Feb. | ISO 27001 Certified. |
| 2010 | Jan. | Tatsuyuki Saeki appointed Chairman, Norihiko Minato appointed President |
| 2010 | Feb. | Became a private company, agreeing to be acquired by investment funds managed by TPG Capital and the CPP Investment Board in a transaction with a total value of $5.8 billion. |
| 2010 | Jul. | Launch of IMS NPA™ Family service |
| 2010 | Nov. | Launch of New Mobile Application Services of Anshin-Shoho infobox |
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