-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, KuXCuVA83ryWtwV84mpRXZXnxGF8gkJHvYakGaYCfbFuxl8u2trb8JcQgLTdtY+/ ojGtEaFXBTRcQaiog5Vgpw== 0000912057-02-032601.txt : 20020816 0000912057-02-032601.hdr.sgml : 20020816 20020815213548 ACCESSION NUMBER: 0000912057-02-032601 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20020815 ITEM INFORMATION: Other events FILED AS OF DATE: 20020816 FILER: COMPANY DATA: COMPANY CONFORMED NAME: INTERNATIONAL RECTIFIER CORP /DE/ CENTRAL INDEX KEY: 0000316793 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 951528961 STATE OF INCORPORATION: DE FISCAL YEAR END: 0629 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-07935 FILM NUMBER: 02740498 BUSINESS ADDRESS: STREET 1: 233 KANSAS ST CITY: EL SEGUNDO STATE: CA ZIP: 90245 BUSINESS PHONE: 3107268000 8-K 1 a2087608z8-k.htm FORM 8-K
QuickLinks -- Click here to rapidly navigate through this document

SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported) August 15, 2002

INTERNATIONAL RECTIFIER CORPORATION
(Exact name of registrant as specified in charter)

Delaware
(State or Other Jurisdiction of Incorporation)
  1-7935
(Commission File Number)
  95-1528961
(IRS Employer Identification No.)

233 KANSAS STREET, EL SEGUNDO, CALIFORNIA 90245
(Address of principal executive offices)

(310) 726-8000
(Registrant's telephone number, including area code)

No Change
(Former name or former address, if changed since last report)




Item 5. Other Events

        International Rectifier Corporation ("IR") has previously reported this year in filings with the Securities and Exchange Commission that it sued Hitachi, Ltd., Hitachi America, Ltd. and Hitachi Semiconductor (America), Inc. in Federal District Court in Los Angeles in January 2002 for infringement of several IR patents.

        At IR's request, the District Court issued a preliminary injunction against certain infringing acts and, as a result of further action by the Court of Appeals for the Federal Circuit, as of August 2, 2002, Hitachi, Ltd., Hitachi America, Ltd. and Hitachi Semiconductor (America), Inc. were enjoined from making, using, offering for sale or selling in, or importing into, the United States certain Hitachi planar power MOSFETs. Trial in the case is currently scheduled for December 2002.

2



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 hereunto duly authorized.

    INTERNATIONAL RECTIFIER CORPORATION
             
Date: August 15, 2002   By:   /s/  GERALD A. KORIS      
        Name:   Gerald A. Koris
        Title:   Secretary and General Counsel
             
             
             

3




QuickLinks

SIGNATURES
-----END PRIVACY-ENHANCED MESSAGE-----