| 13 Jul 2010 | FY2010 1st Meeting of Research Committee |
| 3 Jun 2010 | Dr Okumura lectured at the 2010 JPA General Assembly |
| 17 Mar 2010 | FY2009 3rd Meeting of Research Committee |
| 20 Jan 2010 | FY2009 2nd Meeting of Research Committee |
| 15 Sep 2009 | Meeting of Research Committee in Tokyo with invited geotechnical specialists |
| 13 Jul 2009 | Chairman Prof. Bolton and IPA Secretariat had a meeting in Kochi, Japan |
| 4 Jun 2009 | Dr Okumura lectured at the 2009 JPA General Assembly |
| 4 Feb 2009 | Press conferences about "2nd IPA International Workshop" were held in Tokyo and Kochi |
| 30 May 2008 | Dr Okumura lectured at the 2008 JPA General Assembly |
| 10 Oct 2007 | Press conference at the Ministry of Land, Infrastructure and Transport Press Club |
| 20 Sep 2007 | Start sending out the IPA membership card of three types for Individual, Student and Corporate Member |
| 16 Jul 2007 | Preparing for the second international workshop, the IPA had the meeting with Chairman Prof Bolton, Vice Chairman Dr Tagaya, Director Dr White, Auditor Mr Tanaka, and Secretary General Dr Okumura in Kochi, Japan. |
| 29 Jun 2007 | Dr Okumura lectured at the 2007 JPA General Assembly |
| 16 Apr 2007 | Online debut of brandnew IPA official website |
