SPARKS, Nev., August 9, 2004 –SulphCo, Inc. (OTCBB: SLPH) today announced that it has signed a Collaboration Agreement with ChevronTexaco Energy Technology Co., a unit of ChevronTexaco Corp., to further evaluate and develop SulphCo, Inc.’s ultrasound technology.

SulphCo’s technology is designed to use high power ultrasound to upgrade sour crude oil and other petroleum streams at low pressure and low temperature. Recent work has been directed toward desulfurization and upgrading of crude oil. It is anticipated that the technology could have both Upstream and Downstream applications.

“We are very pleased to be collaborating with ChevronTexaco Energy Technology Co. to further develop our ultrasound process,” said Dr. Rudy Gunnerman, Chairman, Founder and CEO of SulphCo Inc. “ChevronTexaco Energy Technology Co. is widely recognized as a world leader in delivering advanced energy technologies and we look forward to working closely with them.”

Founded in December 2000, SulphCo's process is designed to use ultrasound technology to desulfurize and upgrade crude oil and other petroleum streams. Unlike current sulfur-removal technologies, SulphCo's process is designed to operate at low pressures and temperatures. SulphCo's technology could potentially assist refiners and petroleum product marketers comply with low sulfur fuel regulations worldwide.

For further information, please contact Rudolf W. Gunnerman at (775) 829-1310.