ATMI Japan and Nissan Chemical Announce Manufacturing Agreement

  DANBURY, Conn. and TOKYO, Dec. 3 /PRNewswire/ -- ATMI Japan K. K., a 
wholly-owned subsidiary of ATMI, Inc. (Nasdaq: ATMI) and Nissan Chemical 
Industries, Ltd. today announced the signing of an agreement granting Nissan 
Chemical an exclusive right to manufacture, distribute, and sell certain of 
ATMI's wafer cleaning chemicals in Japan.  ATMI provides specialty materials 
and services to the worldwide semiconductor industry. Nissan Chemical 
specializes in chemical manufacture and has developed a strong market presence 
in electronic materials in Japan and Asia.  
ATMI and Nissan Chemical have cooperated for three years to introduce ATMI 
photolithography residue remover and wafer cleaning chemicals to Japanese 
semiconductor and micro-electromechanical systems (MEMS) device manufacturers. 
Japan-based manufacturing is an important element of ATMI Japan's strategy to 
serve the domestic customer. Qualification of the first phase of Nissan 
Chemical's manufacturing plant in Toyama is complete; the plant is expected to 
be fully operational in September 2002.  
ATMI has developed numerous proprietary cleaning chemical solutions in 
response to customer requirements. The formulations are optimized for advanced 
designs and for use with emerging copper and low-k-based semiconductor 
technologies. Several major semiconductor manufacturers in Asia and Japan have 
selected ATMI's unique cleaning chemistries for copper and low-k commercial 
The semiconductor manufacturing process modifies wafers by stacking 
multiple chemical layers by numerous processes, which include thin film 
chemical or physical vapor deposition, ion implantation, and photolithography. 
Producing a completed semiconductor "chip" on a wafer may take more than 
400 discrete process steps. The wafers need to be carefully cleaned with 
specialty cleaning materials that selectively remove only unwanted materials 
prior to starting each new step. Underlying circuits must be left untouched 
when cleaning and removing extraneous particles and residues.  
Nissan Chemical offers a wide range of unique products and materials 
through a combination of traditional chemical synthesis and cutting-edge 
technology. Outside of a strong presence in the LSI (large scale integration) 
market with unique antireflective coatings and in the LCD market with unique 
orientation layer materials, Nissan Chemical has a renowned presence in 
agrochemicals, pharmaceuticals, and a variety of specialty chemicals. Nissan 
Chemical has created added value to their target markets through intensive 
research and development efforts.  
ATMI provides specialty materials and services to the worldwide 
semiconductor industry.  
Located in Tokyo, ATMI Japan promotes ATMI products and services in 
cooperation with its partners and provides selected ATMI products and services 
to the semiconductor manufacturers. Nippon Sanso and ATMI are partnered to 
provide safer and more productive process gas delivery systems; Nissan 
Chemical and ATMI are partnered to provide liquid solutions used in cleaning 
semiconductor wafers; Sanyo Chemical and ATMI are partnered to provide 
chemical mechanical polishing (CMP) slurries.  
Statements contained herein that relate to ATMI's future performance, 
including, without limitation, statements with respect to ATMI's anticipated 
results of operations or level of business for 2001 or any other future 
period, are forward-looking statements within the safe harbor provisions of 
the Private Securities Litigation Reform Act of 1995. Such statements are 
based on current expectations only and are subject to certain risks, 
uncertainties, and assumptions, including, but not limited to: changes in 
semiconductor industry growth or ATMI's markets; competition, problems, or 
delays developing and commercializing new products; problems or delays in 
integrating acquired operations and businesses into ATMI; problems or delays 
associated with any restructuring activity; and other factors discussed in 
ATMI's filings with the Securities and Exchange Commission. Such risks and 
uncertainties could cause actual results to differ from those projected. ATMI 
undertakes no obligation to publicly update or revise any forward-looking 
statements, whether as a result of new information, future events or 
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-0-                             12/03/2001  
/CONTACT:  In the United States - Dean Hamilton of ATMI, +1-203-207-9349 - 
Direct, or +1-203-794-1100, ext. 4202, or; or in Japan - 
ATMI Japan KK, +03-5765-6323, or /  
/Web site: /  
CO:  ATMI, Inc. 
ST:  Connecticut, Japan 
SU:  CON  
-0- Dec/03/2001 21:13 GMT
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