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1890
The origin of the trademark SHIRASAGI
Takeda Pharmaceutical registered a trademark using the White Egret as a symbol of its own quality standards.
Image courtesy of Takeda Pharmaceutical Company Limited. -
1915
The registration of the trademark SHIRASAGI
Takeda Pharmaceutical registered SHIRASAGI as a trademark, naming it after the White Egret depicted in the trademark
Image courtesy of Takeda Pharmaceutical Company Limited.
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Beginning
1926
Beginning of the Activated Carbon Business
Imported the activated carbon CARBORAFIN from Bayer AG and sold it to sake brewers.
Image courtesy of Takeda Pharmaceutical Company Limited. -
1933
The birth of SHIRASAGI activated carbon
Started production of the wood-based powdered activated carbon KYORYOKU SHIRASAGI at the Osaka Plant (then Takeda Pharmaceutical).
Image courtesy of Takeda Pharmaceutical Company Limited.
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1934-1968
In the 1930s, SHIRASAGI products were
widely adopted in industries such as food,
pharmaceuticals and chemicals following
after the launch of "Kyouryoku Shirasagi"
of zinc-chloride activated carbon.
During the high economic growth period, activated carbon came into use for pollution control purposes. To meet diversifying needs, domestic production sites were reorganized and manufacturing
capabilities strengthened.
Image courtesy of Takeda Pharmaceutical Company Limited.
Image courtesy of Takeda Pharmaceutical Company Limited.
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1969
Minabe Chemical Industries was established.
Started production of wood-based zinc chloride-activated carbon.
(Later expanded its product range to steam-activated carbon and impregnated activated carbon.)
©Minabe Chemical Industries Ltd. 
©Minabe Chemical Industries Ltd. -
1971
Century Chemical works Sdn. Bhd. was established.
Started production of wood-based steam-activated carbon in Malaysia.
©Century Chemical Works Sdn. Bhd. 
©Century Chemical Works Sdn. Bhd. -
1972
Davao Central Chemical was established.
Started production of coconut-shell-based steam-activated carbon in Philippines.
©Davao Central Chemical Corporation 
©Davao Central Chemical Corporation -
1974
Started a partnership with Hakata Chemical Co., Ltd.
Started production of spherical activated carbon.
(Later expanded its product range to impregnated activated carbon.)
©Hakata Chemical Co., Ltd. 
©Hakata Chemical Co., Ltd. -
1988
AD’ALL was established.
Started production of activated carbon fiber.
©AD'ALL Co., Ltd. -
1992
Hirakata Plant was opened.
Started production of water purifier filters using activated carbon fiber.
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2005
Integrating material businesss and processing business.
Osaka Gas Chemicals inherited Takeda Pharmaceutical's activated carbon business.
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2014
The Jacobi Carbons joined the Osaka Gas Chemicals Group.
Integrated Jacobi Carbons, an activated carbon manufacturing and sales company, and its 19 affiliated companies into the Osaka Gas Chemicals Group.
©Jacobi Group -
2026
100th Anniversary
The 100th Anniversary of
Activated Carbon BusinessRenewed the SHIRASAGI brand logo.
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