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.
A standard bath tub is 14 to 17 inches in depth. A European style is 18 inches deep and a Japanese (or Greek) style is 22 or more inches in depth. There are numerous makes and models of bath tub styles including built-in, freestanding, soaking, and whirlpool.