- Jan. 1, 2024
- Notice of Conversion to a Limited Liability Company
- Apr. 12, 2023
- CoorsTek Published EHS Report 2023
- Mar. 30, 2023
- CoorsTek KK Announces Change in the Board of Directors
- Nov. 1, 2022
- CoorsTek Announces Change of Representative Director of Japanese Subsidiary
- Jul. 21, 2022
- CoorsTek Announces Capacity Investments in Japan
- Apr. 28, 2022
- CoorsTek Published EHS Report 2022
- Apr. 1, 2022
- CoorsTek KK Announces Change in Board Members
- Apr. 27, 2021
- CoorsTek Published EHS Report 2021
- Apr. 22, 2021
- CoorsTek KK Announces Changes of Board of Directors
- Apr. 22, 2021
- CoorsTek Recognized as a 2021 US Best Managed Company
- Sep. 13, 2019
- CoorsTek KK acquired the Naming Rights for Hadano City Culture Hall
- Oct. 15, 2018
- CoorsTek KK Announces Changes of Board of Directors
- Jan. 16, 2018
- CoorsTek KK’s Office Wins “German Design Award 2018”
- Mar. 22, 2017
- RCF-Free Thermal Insulation for Industrial Furnaces that Can Maintain High Thermal Insulating efficiency Even at Temperatures Higher than 1,000°C Developed
- Jan. 23, 2017
- CoorsTek KK's office wins "Red Dot Design Award"
- Nov. 11, 2016
- Lifetime Achievement Award from the Japan Fine Ceramics Association
- Jul. 1, 2016
- Announcement of merger between wholly-owned subsidiaries
- Dec. 14, 2015
- Combined Technologies of CoorsTek and former Covalent Materials Featured at SEMICON Japan
- Nov. 30, 2015
- CoorsTek KK Announces New President
- Oct. 1, 2015
- Japanese and American Firm Combine to Create Global Ceramics Powerhouse Covalent Materials becomes CoorsTek and changes its name and headquarters
- Jun. 5, 2015
- Announcement of FY 2014 Consolidated Financial Results (April 1, 2014 - March 31, 2015)
- Feb. 18, 2015
- Notice of Completion of Early Redemption of 1st Series of Unsecured Bonds
- Dec. 30, 2014
- CoorsTek Finalizes Acquisition of Covalent Materials Corporation
- Dec. 26, 2014
- Notice regarding an Early Redemption of Entire Amount and Occurrence of Redemption Option Event of the 1st Series of Unsecured Bonds (with Inter-Bond Pari Passu Clause)
- Dec. 11, 2014
- Re: Potential Accrual of Redemption Rights of 1st Series of Unsecured Bonds (with inter-bond pari passu clause)
- Dec. 9, 2014
- CoorsTek to Acquire Covalent Materials Corporation
- Nov. 13, 2014
- Announcement of FY 2014 1st Half Consolidated Financial Results (April 1 - September 30, 2014)
- Oct. 7, 2014
- Covalent Receives Merit Award from Minister of Economy, Trade and Industry for Collaborative Achievement Between Industry, Academia and Government
- Aug. 8, 2014
- Covalent Receives Award for Industrial Development from Japan Fine Ceramics Association
- Jul. 25, 2014
- Notice Regarding a Partial Early Redemption of 1st Series Unsecured Bonds (with Inter-Bond Pari Passu Clause)
- May. 30, 2014
- Announcement of FY 2013 Consolidated Financial Results (April 1, 2013 - March 31, 2014)
- Mar. 19, 2014
- Covalent Materials Is Selected by METI as a Global Niche Top 100 (GNT) Company
- Nov. 14, 2013
- Announcement of FY 2013 1st Half Consolidated Financial Results (April 1 - September 30, 2013) (Updated to financial results audited by Audit Firm.)
- May. 30, 2013
- Announcement of FY 2012 Consolidated Financial Results (April 1, 2012 - March 31, 2013)
- Jan. 31, 2013
- Notice regarding partial redemption amount of the 1st Series Unsecured Bonds as of February 18, 2013
- Dec. 14, 2012
- Re: Results of Offer to Purchase the 1st Series Unsecured Bonds
- Nov. 30, 2012
- Announcement of FY 2012 1st Half Consolidated Financial Results (April 1 - September 30, 2012)
- Nov. 15, 2012
- Re: Delay of announcement of consolidated financial results for the six-months ended September 30, 2012
- Nov. 13, 2012
- Re: Determination of Details of Offer to Purchase the 1st Series Unsecured Bonds
- Oct. 15, 2012
- Re: Approval of Resolution of the Bondholders Meeting held concerning Amendment to the Terms and Conditions (Extension of Maturity Date, Increase in Interest Rate, Increase in Redemption Amount, etc.) of the 1st Series Unsecured Bonds
- Oct. 5, 2012
- Re: Administrative Agents concerning the Offer to Purchase of the 1st Series Unsecured Bonds and Procedure to Open an Account
- Oct. 5, 2012
- Re: Resolution of the Bondholders Meeting held concerning Amendment to the Terms and Conditions (Extension of Maturity Date, Increase in Interest Rate, Increase in Redemption Amount, etc.) of the 1st Series Unsecured Bonds
- Sep. 28, 2012
- Re: BondholdersEIntention concerning Amendment to the Terms and Conditions (Extension of Maturity Date, Increase in Interest Rate, Increase in Redemption Amount, etc.) and Offer to Purchase of the 1st Series Unsecured Bonds
- Sep. 14, 2012
- Re: BondholdersEIntention concerning Amendment to the Terms and Conditions (Extension of Maturity Date, Increase in Interest Rate, Increase in Redemption Amount, etc.) and Offer to Purchase of the 1st Series Unsecured Bonds
- Sep. 14, 2012
- Convocation Notice for Bondholders Meeting (English Translation)
- Sep. 13, 2012
- Re: Holding of Bondholders Meeting concerning Amendment to the Terms and Conditions (Extension of Maturity Date, Increase in Interest Rate, Increase in Redemption Amount, etc.) and Offer to Purchase of the 1st Series Unsecured Bonds
- Sep. 4, 2012
- Re: Extension of Bondholders Meeting concerning Amendment to the Terms and Conditions (Extension of Maturity Date, etc.) of the 1st Series Unsecured Bonds
- Aug. 24, 2012
- Re: Information to be provided at the Briefing Session for Bondholders
- Aug. 21, 2012
- Re: Offer to Purchase the 1st Series Unsecured Bonds
- Aug. 10, 2012
- Notice of Briefing Session for Bondholders of the 1st Series Unsecured Bonds
- Jul. 30, 2012
- Holding of Bondholders Meeting concerning Amendment to the Terms and Conditionsf the Bond
- Jun. 26, 2012
- Regarding Japan Credit Rating Agency, Ltd. Announcement
- Apr. 10, 2012
- Regarding Japan Credit Rating Agency, Ltd. Announcement
- Mar. 29, 2012
- Announcement of Completion of the Transfer of the Silicon Wafer Business
- Feb. 29, 2012
- Procedures Concerning the Business Transfer
- Aug. 10, 2011
- Announcement of Business Transfer
- Apr. 14, 2011
- TI 2010 Supplier Excellence Award
- Apr. 1, 2011
- Message from the new president and CEO, Toshio Nagahama
- Jun. 1, 2010
- Notification of Discontinuation of Some Transparent Quartz Glass Products.
- Apr. 1, 2010
- Message from the new president and CEO, Masanori Nishimura
- Oct. 10, 2008
- Covalent (Shanghai)Trading Co., Ltd. is established.
- Sep. 17, 2008
- Covalent Materials no longer markets Quartz Wool.
- Mar. 31, 2008
- Covalent Materials no longer markets GLASGRAIN.
- Feb. 21, 2008
- Social and Environmental Report 2007
- Jan. 11, 2008
- Participation in SEMICON Japan 2007
- Apr. 27, 2007
- Covalent Materials Corporation's New Brand Mark
- Mar. 28, 2007
- Announcement of New Company Name (33KB)
- Feb. 20, 2007
- Notice Regarding Execution of Share Exchange Agreement (36KB)
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