Exhibit 21.1

KLA-Tencor Subsidiaries

 

Name

   State or Other Jurisdiction of
Incorporation

DOMESTIC SUBSIDIARIES

  

International Sales & Business, Inc.

   California

KLA-Tencor Building Corporation

   California

KLA-Tencor DISC Corporation

   California

KLA-Tencor International Corporation

   California

KLA-Tencor Klinnik Corporation

   California

KLA-Tencor Technologies Corporation

   California

KLA-Tencor China Corporation

   California

KLA-Tencor Asia-Pac Distribution Corporation

   Delaware

VLSI Standards, Inc.

   California

Blue 29 Corporation

   California

ADE Corporation

   Massachusetts

INTERNATIONAL SUBSIDIARIES

  

KLA-Tencor Corporation (Cayman) Limited, I

   Cayman Islands

KLA-Tencor Corporation (Cayman) Limited, II

   Cayman Islands

KLA-Tencor Corporation (Cayman) Limited, III

   Cayman Islands

KLA-Tencor (Cayman) Limited IV

   Cayman Islands

KLA-Tencor Corporation (Israel) Ltd.

   Israel

KLA-Tencor Holding Limited

   Israel

KLA-Tencor Corporation 1992 Ltd.

   Israel

KLA-Tencor Integrated Metrology (Israel) (2002) Ltd.

   Israel

KLA-Tencor Italy S.R.L.

   Italy

KLA-Tencor Japan, Ltd.

   Japan

VLSI Standards, K.K.

   Japan

KLA-Tencor GmbH

   Germany

KLA-Tencor France SARL

   France

KLA-Tencor Korea, Inc.

   Korea

KLA-Tencor Limited

   United Kingdom

KLA-Tencor (Services) Limited

   United Kingdom

KLA-Tencor (Malaysia) Sdn Bhd

   Malaysia

KLA-Tencor (Singapore) PTE, Ltd.

   Singapore

KLA-Tencor International Trading (Shanghai) Co., Ltd.

   China

KLA-Tencor Semiconductor Equipment Technology (Shanghai) Co., Ltd.

   China

KLA Instruments S.A.

   Switzerland

KLA-Tencor Yield Management Software Taiwan Corporation

   Taiwan

Lee Ta Technologies (BVI), Inc.

   British Virgin Islands

KLA-Tencor (Thailand) Ltd.

   Thailand

KLA-Tencor Software India Private Limited

   India

Benchmark Vision Systems Singapore Pte Ltd

   Singapore