Yoshiro Nakamatsu  , also known as , is a Japanese inventor. He regularly appears on Japanese talk shows demonstrating his inventions. In interviews, Nakamatsu has described his "creativity process", which includes listening to music and concludes with diving underwater, where he says he comes up with his best ideas. He then records them while underwater. Nakamatsu claims to benefit from lack of oxygen to the brain during his dives, making inventions "0.05 seconds before death." He also claims that his "Calm Room," a bathroom constructed without nails and tiled in 24-karat gold, encourages creative thinking by blocking television and radio waves. Nakamatsu also has an elevator in his house that he claims helps him think better, although he strictly denies that it is an elevator and describes it as a "vertical moving room". Nakamatsu predicts that he will live until the age of 144. Nakamatsu is a prolific inventor, and he even claims to hold the world record for number of over 3,200 "inventions". While his claim to a "world record" has been described as a record for patents by several media articles, several other sources do not list Nakamatsu among the world's most prolific inventors (he has 6 patent families). Nakamatsu was the subject of the 2009 documentary "The Invention of Dr NakaMats". Among Nakamatsu's early inventions is the Shoyu Churu Churu, a siphon pump used in the home to move soy sauce from large containers to smaller vessels for cooking and serving. His patented inventions include:  Based upon the Juusyoku Record patent issued in 1952, Nakamatsu claims to have invented the first floppy disk well before IBM's floppy disk patent was filed in 1969. However, what Nakamatsu patented in 1952 was a paper for optical sound player. In contrast to a floppy disk, this Nakamatsu patent discloses the use of printed paper for storage instead of the magnetic material of a floppy disk. It is not rewritable and lacks most elements of the IBM floppy disk patent. Since the paper was 'floppy' material, he claims he had invented the floppy disk (sometimes he uses the phrase "floppy media"); however, flexible magnetic recording media was well known prior to 1952, in tape and wire recording. Nakamatsu claims IBM reached licensing agreements with him in the late 1970s. He also claims to have licensed his floppy disk to IBM in 1979, but that the details are "confidential".