FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of October, 2004 Commission File Number 1-15236 Advantest Corporation --------------------- (Translation of Registrant's Name Into English) Shin Marunouchi Center Building ------------------------------- 1-6-2, Marunouchi ----------------- Chiyoda-ku ---------- Tokyo 100-0005 -------------- Japan ----- (Address of Principal Executive Offices) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F X Form 40-F ----- Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ---------- Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ---------- Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes No X ---- ----- If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): ---------- Materials Contained in this Report: 1. English translation of the Japanese-language Financial Digest for the interim fiscal period ending September 30, 2004, as filed with the Tokyo Stock Exchange on October 26, 2004. 2. English translation of a press release dated October 26, 2004, announcing the merger of Advantest RF Technology Corporation into the Company through a simplified merger. 3. English translation of a press release dated October 26, 2004, announcing the terms of stock acquisition rights to be issued in connection with the grant of stock options. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Advantest Corporation By: /S/ HITOSHI OWADA -------------------------------------- Name: Hitoshi Owada Title: Director and Managing Executive Officer Date: October 27, 2004