News Room

Yokohama Rubber’s Environmental Technology Receives Award from Cardolite Corporation (USA)

March 25, 2011

Tokyo - The Yokohama Rubber Co., Ltd. announced today that its environmental technology had received the
“Mortimer T. Harvey Award 2010” from the Cardolite Corporation (USA), a leading company in cashew
nutshell liquid products*. The awards ceremony took place at the Hilton Tokyo (Shinjuku-ku, Tokyo) on
Thursday, February 24. In attendance on behalf of Yokohama Rubber were Director and Corporate Officer
Kinya Kawakami and the four recipients; President Tony Stonis of Cardolite Corporation presented the award.

Yokohama Rubber received the award for environmental technology that makes use of Cardolite cashew
nutshell liquid products. The shells of cashew nuts are ordinarily disposed of as waste, but the cashew nutshell
liquid extracted from them can be used as raw materials to rubber compound for bead filler, a reinforcement
material employed in the manufacture of tires. This application contributes to the conservation of the
environment by using natural materials and more effectively utilizing resources. The rubber compound is more
easily formed into tires because it has low levels of rigidity prior to vulcanization. After vulcanization, it
achieves high levels of elasticity that improve driving stability. The technology was patented in 1991 in Japan
and in 1993 in the United States. The award recognizes Yokohama Rubber’s achievement in developing,
patenting and commercializing technology using cashew nutshell liquid products about 20 years ago and in
utilizing this technology for the last 20 years to contribute to the preservation of the environment and the
development of the cashew nutshell liquid industry.

The “Mortimer T. Harvey Award” was founded in 1998; this time marks the 12th time it has been presented. Its
purpose is to encourage the development of cashew nutshell liquid products and technologies by recognizing
companies and researchers who have used cashew nutshell liquid to contribute to society.

* Oil extracted from the shells of cashew nuts is used to manufacture a wide range of products, including coatings, paints, rubber and special polymers.