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 standard bathtub in most American homes can hold 24 gallons of water before it begins to overflow the rim of the tub. Garden or soaking style bathtubs may hold 45 to 80 gallons of water at their maximum capacity. While standard bathtubs have a capacity of 24 gallons, most people do not fill the tub to capacity when taking a bath.