- Applied Materials, Inc
- ARM
- Artisan Components, Inc
- ASML Netherlands BV
- Cadence Design Systems, Inc
- Canon USA Inc
- Dai Nippon Printing (DNP)
- DuPont Photomasks, Inc
- Etec Systems, Inc, an Applied Materials, Inc company
- GDA Technologies, Inc
- HPL Technologies, Inc
- Hoya Corporation
- IN2FAB Technology Ltd
- Infineon Technologies AG
- JEOL, Ltd
- KLA-Tencor Corporation
- Leica Microsystems AG
- Matsushita Electric Industrial Co Ltd
- MicroArk Co Ltd
- Monterey Design Systems, Inc.
- Nikon Corporation
- NuFlare Technology, Inc
- PDF Solutions, Inc
- Photronics, Inc
- Prolific, Inc
- RUBICAD Corporation
- Sagantec
- Sanyo Electric Co Ltd
- Silicon Logic Engineering, Inc
- SiliconMap, LLC
- Silicon Valley Research Inc
- STMicroelectronics
- Sycon Design, Inc
- Tensilica, Inc.
- Toppan Printing Co
- Toshiba Corporation
- Trecenti Technologies, Inc.
- TSMC; UMC
- Virage Logic, Inc
- Virtual Silicon Technology, Inc
- Zygo Corporation
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