TOKYO OHKA KOGYO CO., LTD. (TOK) provides chemical products, such as photoresist, and equipment for semiconductors and displays.

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DuPont Electronic Technologies and TOKYO OHKA KOGYO CO., LTD. Announce License and Development Agreement on Advanced Photoresists for the Microelectronics Industry

WILMINGTON, Del., and Kawasaki, Japan, October 3, 2001 - DuPont Electronic Technologies and Tokyo Ohka Kogyo Co., Ltd. (TOK) today announced that they have signed a license and development agreement to enable production of photoresists for use in making future generations of semiconductor chips.

Terms of the agreement were not disclosed.

As part of the agreement, TOK becomes the second licensee of DuPont Electronic Technologies' proprietary fluoropolymer binder resin technology, one of the critical ingredients in leading-edge products for micro-lithography.

The agreement will allow the companies to move a step closer to commercializing products that extend Moore's Law, which states that the number of transistors on a computer chip doubles every 12 to 18 months, thus increasing manufacturing productivity and chip performance. Today's advanced chips have features as small as 130 nanometers. Reducing the feature size to 70 nanometers - which would more than triple the number of transistors on a chip - requires a new form of micro-lithography at 157 nanometer wavelength. New photoresists are a critical element in developing this technology. Seventy nanometers is approximately one thousandth the diameter of a typical human hair.

“We are very pleased to have TOK as the second licensee for our proprietary technology,” said David B. Miller, vice president and general manager DuPont Electronic Technologies.

"The need for new and more advanced polymeric materials for the next generation of advanced lithography has presented an opportunity for DuPont. With TOK's expertise in developing and manufacturing photoresists, coupled with our expertise in the production of leading-edge photopolymers and fluoropolymers, we will have the tools to develop the enabling technology to extend Moore's Law to the next generation of faster, more powerful computer chips," Miller said.

"This opportunity to partner with DuPont, the world's number one specialized science company, gives us great pleasure," said Akira Yokota, president of Tokyo Ohka Kogyo Co., Ltd ."By combining the unsurpassed fluoropolymer knowledge of DuPont with our expertise in photoresists, TOK will be able to develop a 157-nanometer resist that will meet the needs of the world's leading semiconductor manufacturers."

Tokyo Ohka is a $700 million leading manufacturer of photoresists, focusing on semiconductor photoresists and photoresist auxiliary components, as well as LCD photoresists, dielectric materials, and processing equipment for semiconductors and LCDs. TOK, as it is commonly referred to in the industry (www.tok.co.jp), also has subsidiaries in the United States, Europe, and several Asian countries.

DuPont Electronic Technologies is a $1 billion Strategic Business Unit that consists of five businesses dedicated to the electronics industry, including, photoresists, high-performance and microcircuit materials, an semiconductor fabrication materials.

DuPont (www.dupont.com) is a science company, delivering science-based solutions that make a difference in people's lives in food and nutrition; health care; apparel; home and construction; electronics; and transportation. Founded in 1802, the company operates in 70 countries and has 90,000 employees.

TOK Forward-Looking Statement

This news release includes an announcement of our corporate strategy, which we will adopt to synergize the technology of both companies. This is achieved by actively pushing ahead with joint research and development as well as reinforcing our own research and development system. Its purpose is to strengthen the foundation of business in the global market environment, introducing new milestone products on the market, drawing on the foresight to anticipate needs and the capability to develop high-quality products rapidly. These statements are based on our management's decision made on the basis of information available at the time of its release and does not assure future results. The actual results might vary remarkably due to the influence of a variety of factors, including changes in technology, market trends, and competitive pressure.

DuPont Forward-Looking Statements

This news release contains forward-looking statements based on management's current expectations, estimates and projections. All statements that address expectations or projections about the future, including statements about the company's strategy for growth, product development, market position, expected expenditures and financial results are forward-looking statements. Some of the forward-looking statements may be identified by words like "expects," "anticipates," "plans," "intends," "projects," "indicates," and similar expressions. These statements are not guarantees of future performance and involve a number of risks, uncertainties and assumptions. Many factors, including those discussed more fully elsewhere in this release and in DuPont's filings with the Securities and Exchange Commission, particularly its latest annual report on Form 10-K, and quarterly report on Form 10-Q, as well as others, could cause results to differ materially from those stated. These factors include, but are not limited to changes in the laws, regulations, policies and economic conditions, including inflation, interest and foreign currency exchange rates, of countries in which the company does business; competitive pressures; successful integration of structural changes, including restructuring plans, acquisitions, divestitures and alliances; cost of raw materials, research and development of new products, including regulatory approval and market acceptance, and seasonality of sales of agricultural products.

10/03/01

DuPont Contact: Leslie A. Cormier
leslie.a.cormier@usa.dupont.com

TOK Contact: H. Akama
TEL. +81-44-435-3000
h-akama@tok.co.jp

*DuPont™ is trademark of E.I. du Pont de Nemours and Company.

HOME News Release2001 DuPont Electronic Technologies and TOKYO OHKA KOGYO CO., LTD. Announce License and Development Agreement on Advanced Photoresists for the Microelec...