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.
Bathtub Sizes and Specs. The typical tub is rectangular in shape. It has a small bathing well. The interior measures 45â³ by 22â³. This measurement is for the bottom. The bathing well top part usually has dimensions of 55â³ by 24â³. These dimensions are used for fiberglass and cast iron types. How to Measure a Bathtub.