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.
Anybody over about 180cm (6 feet) tall is likely to find this standard size pretty uncomfortable. Bathtubs are often referred to in terms of their length in millimetres (e.g. 1500, 1700) - but as you can see in the diagram, this length also includes the rim of the bathtub at each end. For that reason, it's generally not practical to assume that a 1600mm bathtub will be comfortable if you're 180cm (1800mm) tall.