JOINT FILING AGREEMENT
Exhibit 99.1
The undersigned hereby consent to the joint filing by any of them of a Statement on Schedule
13D and any amendments thereto relating to the securities of SulphCo, Inc., and hereby affirm that
this Amendment No. 4 to Schedule 13D is being filed on behalf of each of the undersigned.
| Dated: July 28, 2008 | By: | /s/ Xxxxxx X. Xxxxxxxxx | ||
| Xxxxxx X. Xxxxxxxxx | ||||
| Dated: July 28, 2008 | /s/ Xxxxx X. Xxxxxxxxx | |||
| Xxxxx X. Xxxxxxxxx | ||||
