Earth FX has 2 patents and 2 patents pending. 

Patents:
1. Patent 6,683,779 B2, issued Jan 27, 2004 for a Personal Body Grounding System, outlines the need for personal body contact with the earth and describes the invention as a means to re-connect the human body with the earth.

Read the full Patent,  6,683,779 B2

2. Patent 7,212,392 B2, issued May 1, 2007 for Personal Body Grounding System Instrumentation and Process, describes improvements in efficiency and safety, and includes other enhancements, including monitor and conductivity meter to improve ease of use.

Read the full Patent,  7,212,392 B2

Patents Pending:
1. Personal Body Grounding Systems to Reduce and Prevent Inflammation
2. Method of Treating Autoimmune Diseases