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.
Quick Answer. A standard one-piece shower and tub combination unit is purchased with rough-in dimensions of 60 inches wide, 31 inches deep and 73 3/4 inches high before installation. After the unit is installed, the finished unit is still 60 inches wide, but the measurable depth is 29 3/4 inches deep and the overall visible height is 72 1/2 inches. Keep Learning.