was a branch of the Japanese
that produces clocks, watches, computer printers
and other devices. It was the root of the manufacturing companies of the Seiko Group
- 1881 -- Kintarō Hattori opens the watch and jewelry shop "K. Hattori" (Hattori Tokaiten in Japanese; currently named Seiko Holdings Corporation) in the Ginza area of Tokyo, Japan.
- 1892 -- Seikosha is established in Tokyo as the clock manufacturing arm of K. Hattori.
- 1917 -- K. Hattori becomes a company (K. Hattori & Co., Ltd.).
- 1937 -- The watch production division of Seikosha is split off as Daini Seikosha Co., Ltd. (literally The Second Seikosha).
- 1942 -- Daiwa Kogyo, Ltd. is founded in Suwa, Nagano by Hisao Yamazaki.
- 1943 -- Daini Seikosha establishes a factory in Suwa for manufacturing watches with Daiwa Kogyo.
- 1959 -- Daiwa Kogyo and the Suwa Plant of Daini Seikosha merge to form Suwa Seikosha Co., Ltd.
- 1961 -- Shinshu Seiki Co., Ltd. is established as a subsidiary of Suwa Seikosha.
- 1970 -- Seikosha is split off from K. Hattori & Co., Ltd., and Seikosha Co., Ltd. is incorporated.
- 1982 -- K. Hattori & Co., Ltd. is renamed Hattori Seiko Co., Ltd.
- 1982 -- Shinshu Seiki is renamed Epson Corporation.
- 1983 -- Daini Seikosha is renamed Seiko Instruments & Electronics Ltd.
- 1985 -- Suwa Seikosha and Epson merge to form Seiko Epson Corporation.
- 1990 -- Hattori Seiko Co., Ltd. is renamed Seiko Corporation.
- 1996 -- Seikosha Co., Ltd. is divided into Seiko Precision Inc. and Seiko Clock Inc.
- 1997 -- Seiko Instruments & Electronics is renamed Seiko Instruments Inc.
- 2007 -- Seiko Corporation is renamed Seiko Holdings Corporation