Johnson secured several patents related to the Super Soaker water gun, protecting his intellectual property rights and ensuring that he would benefit from the commercial success of his invention. These patents covered various aspects of the Super Soaker's design and functionality.

Johnson continues to file patents for his inventions in the field of advanced energy technologies, including his high-efficiency battery and thermodynamic energy conversion system. These patents demonstrate his ongoing commitment to innovation and his dedication to developing clean energy solutions.

Throughout his career, Johnson has amassed an extensive portfolio of patents, covering a wide range of inventions and technologies. This portfolio reflects his diverse interests and his prolific inventive output. It underscores his significant contributions to science, engineering, and technology.