Date of Birth: 
About Sogen Kato
- Sogen Kato (?? ??, 22 July 1899 – c.
- November 1978) was a Japanese man thought to have been Tokyo's oldest man until July 2010, when his mummified corpse was found in his bedroom.
- It was concluded he had likely died in November 1978, aged 79, and his family had never announced his death in an attempt to preserve his longevity record.
- Relatives had rebuffed attempts by ward officials to see Kato in preparations for Respect for the Aged Day later that year, citing many reasons from him being a "human vegetable" to becoming a Sokushinbutsu.
- The cause of death was not determined due to the state of Kato's body.The discovery of Kato's remains sparked a search for other missing centenarians lost due to poor record keeping by officials.
- A study following the discovery of Kato's remains found that police did not know if 234,354 people over the age of one hundred were still alive.
- Poor record keeping was to blame for many of the cases, officials admitted.
- One of Kato's relatives was found guilty of fraud; his relatives claimed ¥9,500,000 (US$117,939; £72,030) of pension meant for Kato.
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