SolidOx refers to a breathing apparatuses made by Frenzy Corporation in France. They used Potassium superoxide to provide oxygen during evacuation of toxic environments.
SOLIDOX was a registered trademark of the FENZY CORPORATION FRANCE from 1989 to 1996. The United States Patent and Trademark Office issued the trademark with Serial Number73715648, Registration Number1567736, and Registration Date of 1989-11-28. The trademark can be found in the TESS database at USPTO.gov