| November 6, 2008 |
 Riken
Corporation Reports Second-Quarter Earnings |
| August 8, 2008 |
Riken
Corporation Reports First-Quarter Earnings |
| May 9, 2008 |
Riken Corporation Reports Fiscal Year 2007 Earnings |
| February 4, 2008 |
Riken Corporation Reports Third-Quarter Earnings |
| November 14, 2007 |
Riken Corporation Reports First Half Earnings |
| August 3, 2007 |
Riken Corporation Reports First-Quarter Earnings |
| August 2, 2007 |
Apologies and Gratitude Regarding the Damage Caused by Niigata-Chuetsuoki Earthquake |
| July 23, 2007 |
Notice of the Resumption of Production at Riken Kashiwazaki Plant after the Niigata-Chuetsuoki Earthquake |
| July 19, 2007 |
The Status of Recovery from the Damage of Niigata-Chuetsuoki Earthquake(as of July 19) |
| July 18, 2007 |
Notice on Damage Caused by Niigata-Chuetsuoki Earthquake |
| May 9, 2007 |
Riken Corporation Reports Fiscal Year 2006 Earnings |
| February 2, 2007 |
Riken Corporation Reports Third-Quarter Earnings |
| Nobember 15, 2006 |
Riken Corporation Reports First-Halfr Earnings |
| August 3, 2006 |
Riken Corporation Reports First-Quarter Earnings |
| May 19, 2006 |
Riken Corporation Reports Fiscal Year 2005 Earnings |
| February 6, 2006 |
Riken Corporation Reports Third-Quarter Earnings |
| Nobember 16, 2005 |
Riken Corporation Reports First-Half Earnings |
| August 4, 2005 |
Riken Corporation Reports First-Quarter Earnings |
| May 19, 2005 |
Riken Corporation Reports Fiscal Year
2004 Earnings |
| February 4, 2005 |
Riken Corporation Reports Third-Quarter Earnings |
| November 17, 2004 |
Riken Corporation Reports First-Half Earnings |
| August 5, 2004 |
Riken Corporation Reports First-Quarter Earnings |
| May 20, 2004 |
Riken Corporation Reports Fiscal year 2003 Earnings |
| February 5, 2004 |
Riken Corporation Reports Third-Quarter Earnings |
| December 22, 2003 |
Riken Acquires Shares in SPRL, India |
| November 19, 2003 |
Riken Corporation Announces First-half Earnings |
| November 6, 2003 |
New Riken Manufacturing Facility in China |
| August 7, 2003 |
Riken Corporation Reports First-Quarter Earnings |
| May 22, 2003 |
Riken Corporation Reports Fiscal year 2002 Earnings-
Record high consolidated net income of 4.4 billion yen- |
| March 25, 2003 |
Return of Company-paid Portion of the Pension Fund and Revisions to Operating Forecast. |
| January 23, 2003 |
Notice of Application for the Stock Exchange delisting. |
| November 19, 2002 |
Riken Corporation Announces First-half Earnings |
| June 28, 2002 |
Riken announces Reorganization and Change in the Resposibilities of its Top Management. |
| May 22, 2002 |
Riken announces fiscal-year-end results- Record-high net income of 3.3 billion -(japanese only) |
| October 24, 2001 |
Riken announces the establishment of a Commitment Line |
Japanese 
