INFICON To Present At The Wall Street Analyst Forum's 52nd NYC Analyst Conference

Syracuse, New York/Zurich, Switzerland - May 4, 2004 - INFICON Holding AG (SWX Swiss Exchange and NASDAQ: IFCN), a leading manufacturer of vacuum instrumentation and process control software for the semiconductor and related industries and other industrial applications, today announced that Peter Maier, chief financial officer, will make a presentation at the Wall Street Analyst Forum in New York City on Tuesday, May 11.

The presentation to an audience of analysts and portfolio managers is scheduled to begin at 8:20 a.m. EDT. A live webcast and replay of the presentation will be available in the Investor Relations section of the INFICON website,, for 60 days.

INFICON is a leading developer, manufacturer and supplier of innovative vacuum instrumentation, critical sensor technologies, and process control software for the semiconductor and related industries. These analysis, measurement and control products are vital to original equipment manufacturers (OEMs) and end-users in the complex manufacturing of semiconductors, flat panel displays, magnetic and optical storage media and precision optics. INFICON also provides essential instrumentation for gas leak detection and toxic chemical analysis to the air conditioning/refrigeration, emergency response and industrial hygiene markets. Headquartered in Syracuse, New York, INFICON has manufacturing facilities in the United States and Europe and worldwide offices in the U.S., China, France, Germany, Japan, Korea, Liechtenstein, Singapore, Switzerland, Taiwan, and the United Kingdom. For more information about INFICON and its products, please visit the Company's website at