| 1968 |
| April | Nihon Marketing Agency is established in Osaka with 1.8 million yen of capital to conduct primarily marketing research. |
|
| 1969 |
| March | Office expansion. Capital is increased to 3.6 million yen. |
| April | The office opens in Takadanobaba and begins business to mark the company's entry into the Tokyo market. |
|
| 1970 |
| June | Tokyo office moves to Shibuya. |
|
| 1975 |
| July | Tokyo office is incorporated with capital of 5 million yen and named 'Nihon Marketing Agency Tokyo.' |
|
| 1978 |
| April | The company becomes ' Nihon Marketing Agency' after removed 'Tokyo' from the company name. From this point, Nihon Marketing Agency is composed of two companies (Tokyo and Osaka). Tokyo head office increases capital to 10 million yen. |
|
| 1982 |
| May | Tokyo head office increases capital to 15 million yen. A national network of consumer test is completed. |
|
| 1985 |
| May | The fieldwork organization completes. |
|
| 1990 |
| April | Nihon Marketing Agency Tokyo Head office is renamed 'Japan Marketing Agency Co., Ltd.' |
|
| 1992 |
| March | Osaka Office opens in Hirano-cho, Chuo-ku, Osaka. |
| April | Capital is increased to 35 million yen. |
|
| 1994 |
| Feb | Osaka office moves to Minami-honmachi. |
|
| 1999 |
| March | Completion of new test room at Tokyo head office. |
|
| 2001 |
| May | Group interview facility opens in Shibuya, Tokyo. |
|
| 2003 |
| Nov | Acquisition of Privacy Mark System by Japan Information Processing Development Corporation |
|
| 2005 |
| Oct | Tokyo head office moves |
|
| 1935 |
| May | Born in Fengtian City, Manzhou. |
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| 1960 |
| March | Graduated form Osaka City University with major in Sociology. |
|
| 1964 |
| Sep | After working for Nihon Marketing Institute, Kojima co founds Nihon Marketing Agency in Osaka, and assumes the post of Executive Vice President. |
|
| 1969 |
| April | Vice President of Tokyo office. |
|
| 1975 |
| July | President of Nihon Marketing Agency Tokyo Head Office. |
|
| 1990 |
| April | President of Japan Marketing Agency |
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