Takayuki Kubota

In October 2010, Kubota performed at the Koyamada International Foundation's United States Martial Arts Festival at the Redondo Beach Performing Arts Center in Redondo Beach, California.

In 1990, Kubota was inducted into the Black Belt magazine's Hall of Fame as 'Weapons Instructor of the Year.'

The five and a half inch plastic Kubotan key chain is Kubota's most important invention. It was designed as a tool for female Los Angeles Police Department officers, and registered as trademark in 1978. Kubota also developed the Kubotai, another self-defense weapon, which was patented in 1991. The Kubotai is used to employ wrist locks and immobilize the opponent.

James Caan may have been his most loyal celebrity student, having trained with him from 1975 until at least 2004.

On August 2, 1964, Kubota was invited by Ed Parker to give a demonstration at Parker's First Annual International Karate Tournament in Long Beach, California. In late 1964, he permanently relocated to America. Kubota taught self-defense at the Los Angeles Police Department Academy for several years. Kubota developed his own style of karate, naming it Gosoku-ryu ("hard-fast style"), and he consequently holds the title Sōke, meaning "head of family/style."

As he became more well known, the US military and government personnel at the American military bases stationed there invited him to teach self-defense and show demonstrations. From 1958 to 1960, he taught the US Military Police and other personnel at Camp Zama, Kanagawa, Japan. In addition, from 1959 to 1964, he taught self-defense to the US Army personnel at Kishine Barracks in Yokohama. At the same, during 1961 to 1963, he was teaching the American personnel at Grand Heights Air Force Base in Tokyo and US Air Force Police at Fuchu Air Force Base. He also worked as a bodyguard to the US Ambassador to Japan. Through 1964, Kubota taught self-defense to other government personnel, including the CIA agents at the US military bases throughout Japan.

Kubota was a self-defense instructor for the Tokyo Police department in the 1950s, where he was noted for his expertise in practical karate. He has devoted his life to learning, creating, and teaching the application of self-defense techniques to military, law enforcement, and civilian personnel. He has earned black belt degrees in karate, judo, aikido, kendo, and iaido.

Kubota opened his first karate dojo at the age of 17. From 1950–1959, he was an instructor for the US Army, Air Force, and Marines in kendo, karate, judo, and giyokute-jitsu. Between 1960 and 1963, he taught pro-wrestling techniques at Haneda dojo.

In 1947, at age of 14, he was noticed by Tokyo Police and was soon teaching hand-to-hand and baton combat to officers of Kamata Police Department; he did this for 10 years. He tested his martial arts skills by working as an agent in dangerous districts of Tokyo and being used as a one-man riot control by police. It was in this era that Gosoku-ryu techniques were refined. He has complemented his martial arts training with studies in meditation, history, and other non-combative aspects of the arts.

Takayuki Kubota (窪田 孝行, Kubota Takayuki, born September 20, 1934) is a Japanese American master of karate. He founded the Gosoku-ryu style of karate, and is the founder and president of the International Karate Association. Kubota holds the title of Sōke for his development of the Gosoku-ryū style of karate. He is also the inventor and holder of the trademark of the Kubotan self-defense key chain.

Kubota was born on September 20, 1934, in Kumamoto, Japan, into the family of Denjiro (father) and Semo (mother) Kubota. He had four brothers, of which one became a kendo master, one a jujitsu master, and one the Japanese Olympic volleyball coach. In 1939, at the age of four, Kubota began studying martial arts under the direction of his father, who was a master of jujitsu and jukendo. The training included bamboo yadi, judo, keibo-jutsu (baton), and makiwara practice.