| 1711 | Founding of Ozeki by Osakaya Chobei in Imazu Village. |
|---|---|
| 1884 | Name change from 'Manryo' to 'Ozeki'. |
| 1935 | Reformed the organization into a joint-stock company, Bunjiro Osabe Company. |
| 1945 | Facilities are destroyed by fire due to a WWII air raid. |
| 1950 | Changed the trademark of 1st grade sake to 'Sake no Tsukasa Ozeki' and Special grade sake to 'Aoimon Ozeki'. |
| 1958 | Begins sponsoring the Ozeki Cup for Sumo Tournament. |
| 1962 | Changed corporate name to Ozeki Sake Brewing Co., Ltd. |
| 1964 | Market launch of Ozeki One Cup coincides with the Tokyo Olympics. The first 'cup' sake becomes a hit product and changes the industry standard. |
| 1966 | Ozeki One Cup vending machine is the first to offer only alcoholic beverages. |
| 1976 | Launches 1.8L Hakonosake Boxed Sake (1977 receives an award from the Ministry of International Trade. and Industry for packaging. In 1978, national release of the product.) |
| 1979 | Established Ozeki San Benito Inc. in Hollister, California, USA. |
| 1985 | Launches 1.8L Nomo Nomo Boxed Sake. |
| 1991 | Ozeki becomes Ozeki Corporation and new corporate principles and logo are enacted. |
| 1999 | Acquisition of ISO 14001 Certification. |
| 2001 | Opens 'Sekijuan' a confectionary using sake in its sweets. |
| 2004 | Acquisition of the Tamon Brand. |
| 2007 | Launches 'One Cup Black' the latest product in the 'Cup' Series. |
| 2009 | Celebrated 45 years of Ozeki One Cup Sake excellence. |
| 2011 | Celebrated 300 years after foundation. |
| 2014 | Celebrated 50 years of Ozeki One Cup sake excellenece. |
| 2015 | Launches 'Junmai Rai', taking advantage of Ozeki's unique brewing technique. |
| 2015 | Acquisition of FSSC 22000 Certification. |
| 2017 | Kuniko Osabe became the 14th president. |
