Part 1 Conducting Research. Understand what inventions or ideas are eligible for a patent. You can patent your idea if it's a process, a machine, an article of manufacture, a composition of matter, or an improvement of any of these.
Quick Answer. The standard size of a bathtub is 60 inches long, 32 inches wide and 18 inches tall. Standard-sized tubs are designed to fit into an alcove, surrounded by three walls. Alcove tubs are available in a wide variety of materials.
The bathtub dimensions of a tub with a surround, or a lip of material that extends around the outside of the tub on either side of the tub, will be measured differently than a stand-alone unit. Measure again from the farthest point to the farthest point, and then add a few inches to account for the surround.