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.
Make minor adjustments if your bathtub is close to one of these standard measurements: 32-by-60, 30-by-60, 27-by-54, 60-by-60, 42-by-72, 42-by-60, 32-by-60. Not every bathtub will fall into these dimensions, but if you measured 32.5-by-60.25, it is very likely that your tub is really 32-by-60.