History
| February 1930 |
 Founded in Tokyo and commenced trading and refining of gold, silver, and platinum |
|---|---|
| July 1934 | Accredited as an official melter and assayer in the London Silver Market |
| December 1935 | Plant opened in Tokyo (closed in 1980) |
| April 1948 | The plant designated as a precious metal refining plant by the Allied Powers GHQ |
| October 1950 |
 Began development and production of platinum thermocouples |
| April 1957 | Began importing platinum directly from the Soviet Union |
| April 1967 |
 Developed KIK series of dental porcelain plating alloys |
| May 1968 | Plant opened in Saitama |
| February 1979 | Affiliate company Ishifuku Jewelry Parts Co., Ltd. Founded |
| February 1980 | Consolidated plant operations to Soka Plant in Saitama |
| June 1982 | Accredited as an official melter and assayer in the London Gold Market |
| November 1982 |
 Developed the oxidized iridium coated titanium electrodes |
| March 1983 | Accredited as an acceptable refiner by the London Platinum Market |
| May 1984 | Accredited as an acceptable refiner by the London Palladium Market |
| July 1986 |
 Began operations at the new head office building |
| September 1992 |
 Launched Ishifuku Gold & Platinum Savings, a service for periodic savings and purchase of precious metal bullion |
| April 1997 |
 Achieved mass production of iridium alloy electrodes for spark plugs |
| March 2000 | Obtained ISO 9002 certification |
| September 2002 | Obtained ISO 9001:2000 certification |
| September 2003 | Obtained ISO 14001: 2004 certification for the head office and Soka Plants I and II |
| June 2005 | Obtained ISO 13485: 2003 certification |
| September 2009 | Completed phase one reconstruction of the Soka Plant |
| June 2011 |
 Completed phase two reconstruction of the Soka Plant |
| May 2012 | Chosen as a contractor to a New Energy and Industrial Technology Development Organization (NEDO) project for the first time |
| April 2013 |
 New building completed for the Nagoya Branch |
| February 2017 | Completed the Soka Plant reconstruction plan |
| November 2017 | Osaka Branch relocated to the current location |
| March 2018 | Kyushu Branch relocated to the current location |
| January 2022 | Established Nanomaterials Business Unit |