| December, 1978 |
Nippon Roki K.K. (meaning Japan Filter Co., Ltd.) was founded in Sanno, Ota-ku, Tokyo. While selling hydraulic filters, the company started developing the filter cartridge for magnetic painting (complex depth filter cartridge), which was regarded difficult to develop with technologies available at the time. |
| January, 1981 |
Completed the development of the filter cartridge for magnetic painting using the high classifying technology. It was first adopted by most Japanese magnetic tape manufacturers. It was then adopted by major magnetic tape manufacturers in Korea, Germany, the U.S., etc. It finally dominated the world market in a short period of time and became the resource of the company’s growth. |
| February, 1984 |
Newly established the Hokuriku Plant in Naka-Niikawa-Gun, Toyama Pref., and built a production system for depth filter cartridge of string wound type covering the total process from raw materials to final products. |
| December, 1984 |
Moved the headquarters to Omori-Kita, Ota-ku, Tokyo |
| June, 1985 |
Established the Kyushu Business Division in Kurume City, Fukuoka Pref. |
| February, 1986 |
Built a mass production plant of the high precision filter cartridge at the address above, with a clean room constructed for the first time in Japan. At the same time, the Kyushu Business Division was reorganized as the Kurume plant, where the company fully started the shipment of the filter cartridge of surface type for the medical and chemical industry in the U.S. |
| March, 1988 |
The company fully started shipping the filter cartridge of surface type for the domestic beer industry where draft beer became the dominant product after the so-called dry taste battle. |
| December, 1988 |
The company annexed Nichiro Kogyo K.K. which was a subcontractor of the company. |
| December 1989 |
Expanded the Hokuriku Plant as a mass production factory of the filter cartridge of capsule type. |
| February 1990 |
Constructed the Yame Plant(present Kyushu Plant) in Yame-Gun, Fukuoka Pref. to fully start the production of the depth filter cartridge of winding type (non-woven fabric winding type). |
| December, 1991 |
The company changed its trade name to the current ROKI TECHNO Co., Ltd. |
| February, 1994 |
The company registered itself as an over-the-counter company at the Japan Securities Dealers Association, and listed its shares at JASDAQ stock exchange. |
| August, 1996 |
The Yame Plant(present Kyushu Plant) was certified for ISO9002, the international standard of the quality management system. |
| November, 1996 |
Established Shin-Nippon Ozone K.K. (then changed its trademark to ROKIENGI Co., Ltd.) as a subsidiary. |
| August, 1997 |
Consolidated the Kurume plant into the Yame Plant(present Kyushu Plant). |
| July 1998 |
Moved the headquarters to Minami-Ohi, Shinagawa-ku, Tokyo. |
| November, 2000 |
The Hokuriku Plant was certified for ISO14001, the international standard of the environmental system. |
| May, 2002 |
The Yame Plant(present Kyushu Plant) was certified for ISO9001: 2000, the international standard of the quality management system. |
| October, 2002 |
Established the Kyushu Sales Office to strengthen the sales in Kyushu area. |
| November, 2002 |
Opened a liaison office in Shanghai to strengthen the sales in Asian territory. |
| February, 2003 |
The company started to reform its management with MEBO, calling the year “the second foundation year”. |
| July, 2003 |
Since a complete parent company was established with MEBO, the company was delisted from the JASDAQ stock exchange. |
| August, 2004 |
Field research was started in the U.S. to strengthen the sales there. |
| February, 2005 |
Obtained the license of the piping construction (Tokyo municipal government) for the water supply pipe washing business. |
| May, 2005 |
The company was awarded the Selete Award 2005 by Semiconductor Leading Edge Technologies (SELETE) for its support of the next generation semiconductor development. The title of the development for which the award was given was “Development of Conductive Pad for Copper Electrolysis Grinding”. |
| April, 2006 |
Annexed the subsidiary, ROKI ENGI Co., Ltd. |
| May, 2006 |
The Hokuriku Plant was elected as one of the “300 middle-scale companies which are active in manufacturing” by the Ministry of Economy, Trade and Industry. |
| June, 2006 |
Opened a liaison office in Atlanta City, Georgia |
| September, 2006 |
Expanded the Yame Plant(present Kyushu Plant) for the second time in order to further promote the clean project. |
| January, 2007 |
Osaka Sales Office is opened in order to reinforce sales activity in West Japan. |
| May, 2009 |
Expanded the Yame Plant to establish the production system in a mid-and long term perspective and aggressively introduced energy-saving equipment as an environment-friendly plant.
With the expansion, the plant changed its name to Kyushu Plant |
