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<DESCRIPTION>DAINIPPON INK AND CHEMICALS RFI PRESS RELEASE DATED APRIL 4, 2006
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             DAINIPPON INK AND CHEMICALS EXPANDS
             ITS BUSINESS TO PRODUCE SPD-SMART
                     LIGHT-CONTROL FILM

Tokyo, Japan and Woodbury, New York   April 4, 2006.
Dainippon Ink and Chemicals Incorporated announced today that
it has expanded the business it started in 1999 to make SPD
emulsions, by now acquiring an additional license from Research
Frontiers Incorporated (Nasdaq: REFR) to make and sell SPD-
Smart  light-control film.

In June of 1999, DIC first became licensed by Research Frontiers
to make SPD emulsions, which combine special polymers,
particles, and other chemicals in a form that can be coated into a
high-performance light-control film used in windows and many
other products. Since that time, a growing team of people within
DIC's R&D and marketing departments in Japan, Europe and the
United States, have been working with Research Frontiers and its
end-product licensees to develop and improve these SPD
emulsions for use in SPD-Smart light-control film. The new
license permits DIC to now produce and sell SPD-Smart light-
control film, and the first shipments of DIC's next-generation SPD
film from its production line have already begun. DIC also plans
to expand production capacity from current levels.

SPD light-control film has wide applicability in a variety of SPD-
Smart products including architectural, automotive, aircraft and
marine windows, as well as in instantly adjustable variable tint
eyewear. SPD light-control technology can be used on flat or
curved glass or plastic surfaces, and is the world's only light-
control technology to combine fast switching speed, optical clarity
over a wide range of light transmission, and uniform switching
over large surface areas. This next-generation SPD light-control
film has the widest reported range of light transmission which can
permit the film to go from nearly as clear as an ordinary window
to less than 0.5% light transmission, which is forty times darker
than even the darkest window tints commonly found on glass
office buildings. Switching speed for SPD films is a fast 2-3
seconds, and these materials are durable, having successfully been
subjected to thousands of hours of high-intensity exposure under
accelerated weathering conditions.

DIC's worldwide non-exclusive license permits it to coat SPD
emulsion into SPD light-control films, and sell such films to
companies licensed by Research Frontiers to make SPD-Smart
end-products. Currently 34 companies  around the world are
licensed to use Research Frontiers' patented SPD light-control
technology in emulsions, film, or end-products. These companies
include some of the world's largest chemical and glass companies,
who in turn are working with their customers in the automotive,
aircraft, marine and architectural product industries.

In a window, sunroof, or other product using VaryFast  SPD-
Smart technology, the user can manually or automatically "tune"
the amount of light, glare and heat coming into a home, office,
aircraft, train or other vehicle. SPD-Smart windows, which can
reduce energy consumption, also block over 99% of harmful
ultraviolet (UV) radiation to protect occupants and prevent the
fading of carpets, furniture, and artwork. Additional information
about SPD-Smart windows and other products can be found at
www.SmartGlass.com.

About Dainippon Ink and Chemicals Incorporated

Dainippon Ink and Chemicals Incorporated (DIC), is one of
Japan's most diversified chemical companies and is the core of the
DIC Group, which comprises approximately 260 subsidiaries and
affiliates, including Sun Chemical Corp. in more than 60 countries
worldwide.

The operations of the DIC Group are divided into five segments:
graphic arts materials; industrial materials; high performance &
applied products; electronics & information materials; and related
business, purchasing & logistics. Through these operations, the
Group supplies an extensive range of essential products to
industrial users around the world. A leader in the global markets
for printing inks, organic pigments and performance resins, the
DIC Group continues to strengthen its international position while
contributing to industry and society through its innovative
products and technologies.

Founded in 1908 and incorporated in 1937, the DIC Group has
26,757 employees. Net sales for the fiscal year ended March 31,
2005 were 1.0 trillion yen (US$9.4 billion). Additional
information about Dainippon Ink and Chemicals can be found on
the Internet at www.dic.co.jp.

About SPD Technology and Research Frontiers Incorporated

Research Frontiers Incorporated (Nasdaq: REFR) develops and
licenses suspended particle device (SPD) technology used in
VaryFast  SPD-Smart  light-control glass and plastic products.
SPD technology, made possible by a flexible light-control film
invented by Research Frontiers, allows the user to instantly and
precisely control the shading of glass/plastic manually or
automatically. SPD technology has numerous product applications,
including: SPD-Smart  windows, sunshades, skylights and
interior partitions for homes and buildings; automotive windows,
sunroofs, sunvisors, sunshades, and rear-view mirrors; aircraft and
marine windows and window shades; eyewear products; and flat
panel displays for electronic products.

SPD-Smart film technology was awarded a "Best of What's New
Award" from Popular Science magazine for home technology and
was also named by the Society of Automotive Engineers'
Aerospace Engineering magazine as one of the top new
technologies for 2002. SPD technology is covered by over 450
patents and patent applications held by RFI worldwide. Currently
34 companies are licensed to use Research Frontiers' patented
SPD light-control technology in emulsions, film, or end products.
Information about Research Frontiers and its licensees can be
found at www.SmartGlass.com.

Note: From time to time Research Frontiers may issue forward-
looking statements which involve risks and uncertainties. This
press release contains forward looking statements within the
meaning of Section 27A of the Securities Act of 1933, as amended,
and Section 21E of the Securities Exchange Act of 1934, as
amended. Actual results could differ and are not guaranteed. Any
forward-looking statements should be considered accordingly.
SPD-SmartTM, VaryFastTM, SPD-SmartGlassTM, Powered by
SPDTM, The View of the Future   Everywhere You LookTM and
Visit SmartGlass.com - to change your view of the world  are
trademarks of Research Frontiers Incorporated.

Contact:

Research Frontiers Incorporated
Joseph M. Harary, President
Patricia A. Bryant, Manager of Investor Relations
Michael R. LaPointe, Vice President-Marketing
516-364-1902
info@SmartGlass.com

Dainippon Ink and Chemicals (customer inquiries only)

Japan (Dainippon Ink and Chemicals, Incorporated):
Mr. Tomoyuki (Ty) Tanaka
tomoyuki-tanaka@ma.dic.co.jp

Mr. Kouhei Sadoshima
kouhei-sadoshima@ma.dic.co.jp

North America (DIC International (USA), LLC):
Mr. Anthony Pirro
apirro@dica.com

Mr. Takahisa Yamatoya
yamatoya@dica.com

Europe (DIC Europe GmbH):
Mr. Masakazu Yoshida
yoshida@dice.de
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