## 3 Results and Discussion
Most of those responsible for the technologies seek to protect their inventions through international requests via the EPO and WIPO in order to reduce costs and simplify the process of individual deposits in each country, simultaneously protecting their technology in several countries [76]. In South America, Brazil stands out with 28 deposits referring to this type of technology, and it has its publications focused on the sterilization of medical devices, pharmaceutical products, surgical instruments, and articles in general. The difference and perhaps the technology that most resembles the proposed use as a barrier for individuals, is in BR112017015030A2, which deals with a device for hand sanitization, with an O3(aq) outlet with distribution openings that allow for the spread of water over the palm and back of the hands. Table 3 shows some documents found in this prospecting. \begin{table}
\begin{tabular}{c c c c} \hline
**Title** & **Application Number** & **Assignee or Inventor** & **Deposited Country** & **Related To** \\ \hline  & & & & Methods, apparatus, and systems for disnitreetic \\  & & & & articles with \(\mathrm{O}_{\mathrm{log}}\). Involves sterilization chamber for \\ Dsinflecting articles with \(\mathrm{O}_{\mathrm{3}}\) & US15870736A & Edsir Medical Systems Inc. & United States & medical articles that are confined and sealed, so as to \\  & & & & not internet with external atmosphere. \(\mathrm{O}_{\mathrm{3}}\). \\  & & & & concentrations are applied until complete material \\  & & & & disinfection or sterilization \(\mathrm{[\gamma]}\). \\  & & & & Treatment chamber behavior in which an object can be \\ Devices for disinfection, & & & & disinfected, decorated, and or sterilized (e.g., \\ dedororization, and/or sterilization of objects & US15533653A & Micromlin LLC & United States & endoscopy compounds). Inclusive nebuliter, Fenton \\  & & & & parrender, and hydrogen peroxide in presence of \\  & & & & nanoparticle catalyst and UV light, and \(\mathrm{O}_{\mathrm{log}}\) can be \\  & & & & applied as additional treatment agent \(\mathrm{[\gamma]}\). \\ \(\mathrm{O}_{\mathrm{3}}\) Sterilization Device & KRE20164611 SA & Hu, PK and Young, L & South Korea & comprising container, control box, sterile room, \\  & & & & discharge tube, connection pipe, air compressor, and neutralization \(\mathrm{[\gamma]}\). \\ Sterile environment maintenance & & & & Method for maintaining sterile environment of \\ method of operation chamber, & & & working chambers. Process generates O from \\ sterile environment & & & wavelength-long- violet rays, introducing \(\mathrm{O}_{\mathrm{3}}\) into \\ maintenance device & & & & the chamber, and breaking down introduced \(\mathrm{O}_{\mathrm{3}}\) into \\  & & & & oxygen radicals \(\mathrm{[\delta]}\). \\  & & & & Sterilization method and device containing \\ Method for sterilization of an article & & & hydrogen peroxide or O\({}_{\mathrm{3}}\) as sterilization agent for \\ in a scalable sterilization chamber & & & sterilization of medical articles or instruments (e.g., \\ Apparatus, method and software & & & gastroscopes and colonoscopy) in scalable \\  & & & & sterilization chamber \(\mathrm{[\delta]}\). \\  & & & & \\ product for hand sanitation by & & & \\ application of coronated water & & & \\ \hline \end{tabular}
\end{table} 
Table 3: Examples of recent documents found in technological prospection. The prospected documents in this study did not have a specific focus on the control of emergency infections. However, a great majority of the developed technologies through chambers or methods of disinfection with the use of O3(g) or O3(aq) are directed to health applications for processes of pathogen decontamination. These technologies could be applied for the control of emergency diseases (or at least the method by which they act), for example, COVID-19.