History | Covalent Materials Corporation


		Toyo Taika Renga K.K. established. (Produces fireproof bricks, followed by large volume sales of high-grade bricks for locomotive use, tunnels, etc.) Crucibles for solar-cell manufacturing
	Denki Kinyu K.K. established. (Originally founded to handle financing for electricity businesses and electrical implements businesses.)
	Oguni Facility opened. (Begins as an iron alloy maker, followed by the production of various carbon products and quartz glass.) Oguni Facility under construction.
	Production of transparent quartz glass started.
	Nihon Eiga Shizai Corporation founded (now Covalent Sales Corporation)	Spun off as subsidiary to become Tokai Rozai K.K.
	Akashiba power generation plant completed. Akashiba Power Plant completed.
	Hatano Facility completed.
		Kariya Facility completed. Kariya Facility as of today


	Toshiba Denko and Toshiba Rozai merge to become Toshiba Ceramics Co., Ltd.
	TPSS production begins. TPSS Process tube boats
	Production of Clear Carbon Susceptors begins. Clear Carbon Susceptors
	Silicon wafer production begins.
	Joint venture with Tokuyama Soda K.K. formed to create Tokuyama Ceramics K.K. (now Covalent Materials Tokuyama Corporation) ; Toshiba Ceramics America, Inc. established (now Covalent Materials USA, Inc.) Covalent Materials Tokuyama Corporation as of today
	Tokai Ceramics established, produces monolithic refractories.
	Sekikawa Denshi Co. established (now Covalent Materials Sekikawa Corporation).
	Akashiba Power Plant No. 2 completed.
	Niigata Toshiba Ceramics established (now Covalent Silicon Corporation).
	Develops and markets super high-purity quartz glass. Precision quartzware Photomask substrates
	Nagasaki Toshiba Ceramics started (now Covalent Materials Nagasaki Corporation)
	Begins production of NEO BONE^®. NEOBONE^®
	Begins production of yttria ceramic parts [EXYRIA^®]. EXYRIA^®
	As a step in the MBO process, becomes a subsidiary of SIC Investment Co., Ltd. and is delisted from the Tokyo Stock Exchange.


	SIC Investment is established for the purpose of the tender offer of Toshiba Ceramics' shares.
	The tender offer is completed and Toshiba Ceramics becomes a subsidiary of SIC Investment.
	After the exchange of shares, SIC changes its name to Covalent Materials.
	Toshiba Ceramics merges with Covalent Materials, and the new Company is inaugurated as Covalent Materials Corporation.
	Covalent Silicon is sold to Sino-American Silicon Products.