SPARKS, Nev., Oct. 12 /PRNewswire-FirstCall/ -- SulphCo®, Inc. (Amex: SUF - News) has announced that it has entered into a test agreement with Nippon Oil Corporation, Japan's largest refining company, headquartered in Tokyo, Japan.

During the term of the agreement, which expires no later than March 31, 2007, SulphCo® will process various samples of Nippon's crude oil or other petroleum feed stocks provided by Nippon using SulphCo's® proprietary Sonocracking(TM) technology.

"We are very excited that Nippon Oil Corporation has chosen to test our Sonocracking(TM) technology due to their dominant position in Japan's sizable oil sector," stated Peter Gunnerman, President of SulphCo® Inc.

This agreement marks SulphCo's third with a major Asian oil refining company in the last three months having previously entered into a test agreement with SK Corporation, the leading Korean oil refining company in July 2006 as well as signing a Letter of Intent with Seoul, Korea-based Hyundai Oilbank Co., Ltd. in August 2006.