| 1918 |
Keizo Ishihara started the production of oblate and food pigment in Shizuoka prefecture. |
| 1943 |
Temporally closed business because of WWⅡ |
| 1946 |
Shohichi Ishihara restarted an independently operated company. |
| 1948 |
Established Ishihara Shoten Co., Ltd. with the capital of JPY 500 thousand |
| 1953 |
Increased capital to JPY 1.2 million |
| 1956 |
Increased capital to JPY 2 million |
| 1964 |
Opened the Tokyo Sales Office |
| 1974 |
Increased capital to JPY 11 million |
| 1977 |
Increased capital to JPY 16.5 million |
| 1981 |
Changed company name into Ishihara Co., Ltd. |
| 1991 |
Opend the USA Office in Seattle, WA |
| 1998 |
Opend the Omiya Sorting Center for sorting walnuts |
| 1999 |
Junichi Ishihara was inaugurated as President. |
| 2006 |
Opend the Almond Factory |
| 2007 |
Moved the Almond Factory to its current address |
| 2009 |
Moved the Head Office to its current address |
| 2012 |
Almond Factory and Head Office obtained ISO22000 for its food safety management system. |
| 2015 |
Joined the Sonton Group |
| 2018 |
Almond Factory obtained FSSC22000 for its food safety management system. |
