What is a patent?
A patent is an exclusive right for an inventor during a period of 20 years to:
Make
Sell
Import
Offer
Use...
...a specific technique.
It is worth noting that only by using a patented technique that is not supplied from the owner of the patent is an infringement of the patent and may result in a lawsuit.
Safetrack develope, manufacture and marketing application methods on a worldwide basis and owns several dozens of patents.