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.
Shower Niche Height The ideal height for a bathtub shower niche sits at chest to eye-level when standing -- a height of around 48 to 60 inches, as this height suits most adults. Set aside a 12-by-24 inch space between studs to hold shampoos, rinses, scrubbers and razors.