I can't say PCTL is the cure to coronavirus, but I do believe it can diminish it's spread, especially in places where disease is frequently passed on, like hospitals, ships, planes, etc. Having one at home would be of little benefit if no one at home was sick.
My point is, what's needed most right now is a treatment for those who get the disease, as we know it will be a year to 18 months or more before a vaccine that prevents it will be available. Beyond that, devices like ours is highly desirable to reduce the spread, but it would take millions of such devices to dramatically reduce it as you'd need them everywhere that people get together.
We belong to a movie group where we get two movies a week on the weekends, the theater will be near full for major features. We've decided we'd rather pay to see the movie in a theater with just a few people, or even better wait for it to be available at home. My point is, until the threat is diminished substantially, the avoidance of crowds is your best defense.
The beauty of our technology is, it isn't intended just for coronavirus, it's intended for all sorts of things that are most often found in hospitals, emergency rooms, cruises, planes, etc. An investment in it won't end the coronavirus threat, but it will diminish disease transmissions as long as it's routinely beind deployed.
I don't know that a single unit is sufficient for most large hospitals, I suspect that as it proves itself, many larger hospitals will want one for every XX number of rooms. If I were responsible for sanitizing a cruise ship I'd want hundreds of units, so I could turn over the ship in just a few days, or less. Fortunately those hundreds of units could be deployed for a fleet of ships by a service that could sanitize the fleet. I would think that a couple units would sanitize an aircraft quickly, but clearly the entire airline industry would be destroyed if each plane had to be sanitized after each flight unless a device was developed that tied to the aircraft vent system and did the job in minutes. Of course the airport itself needs to be sanitized as much as the plane, and that needs to occur while it's still occupied. Now if you can do that, the same technology could be used at theaters, etc as well.
Gary
