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.
Outside Dimensions. A little bit more about the height of the bathtub. Tall tubs are great for a tub only, giving a deep water level on the inside. Shorter ones are great for tub/showers since you are not climbing over a tall rim on a daily basis. When used as a tub/shower we suggest to keep the height around 20.