Established in 1995, Meranto Technology Inc. – with corporate offices in Reno, Nevada and Toronto, Canada – has designed and patented a line of revolutionary door latches and home safety devices for windows, exterior doors and patio sliders. Under the brand name Door Guardian, our Door Guardian, Patio Guardian and 3M Stick on Safety Lock are simple to install and easy to use safety solutions giving peace of mind to you and your family. Our research and development team is working continuously to develop unique and innovative safety products to keep you and your family safe and secure. To see a full list of our product, click here, and to learn more about where to buy them, or to stock them in your store, click here.