Embracing New Change with Wisdom and Enthusiasm
|1949 Mar.||Tokyo Roki Co., Ltd. was established (at Denen-chofu, Ota-ku, Tokyo) to start manufacturing and selling air cleaners and oil filters for internal combustion engines.
|1952 Apr.||The engineering department was organized to start developing filter papers.|
|1955 Jun.||The Headquarters building and Kawasaki Plant were completed at Ichinotsubo, Kawasaki-shi, and business operations were relocated there.
|1958 Feb.||Various filters for airplanes passed approval tests by the Self-defense Agency of Japan.|
|1960 Apr.||Manufacturing of mufflers for internal combustion engines was started.|
|1961 Jan.||Local offices were opened at Nagoya, Osaka and Hiroshima.|
|1962 Sep.||IBM computers were introduced to start computer-processing of office processing.|
|1964 May.||Yokohama Plant was completed, production systems for elements were established, and platinum-catalyst purging mufflers for diesel engines were developed.
|1965 Oct.||Eight offices/plants were in operation nationwide|
|1966 Sep.||Yokohama Plant started commercial production of new-concept “throw-away type cartridge filters”.|
|1966 Dec.||Kusatsu Plant was completed (in Shiga-ken) to start commercial production of air cleaners.|
|1967 Jul.||The demonstration running tests with actual vehicles of exhaust-gas purging mufflers were started.
|1969 Apr.||Hiroshima Plant was completed (in Hiroshima-ken) to start manufacturing air cleaners.|
|1971 Apr.||Sagami Plant (in Kanagawa-ken) was completed to start manufacturing oil coolers.|
|1972 Apr.||The Tokyo Roki Technical Center was opened as the largest filter-related research center in Japan.
|1974 Oct.||Hamamatsu Plant was completed (currently Tokyo Roki Nagura Seisakusho Co., Ltd.) and mass-production systems for cartridge filters were established there.
|1976 Mar.||Otsuki Plant was completed to start manufacturing air cleaners.|
|1976 Nov.||Toner filter elements for dry reproducing machines were developed.|
|1979 Nov.||The Headquarters was moved to a new Headquarters building at Shin-yokohama (in Minatokita-ku,Yokohama-shi).|
|1984 Mar.||The Technical Center was relocated to the Headquarters building.|
|1984 Apr.||Yokohama Plant was opened, making it a center for developing parts for special equipment and products.|
|1985 Jun.||Systems for computational structural analysis were introduced.|
|1992 Apr.||The TIS (integrated group-wide online network system) started full-scale operations.|
|1995 Aug.||The new Headquarters and Research Center were completed (at Tsuzuki-ku, Yokohama-shi), and Headquarters was relocated there from Shin-yokohama.|
|1996 Aug.||New Sagami Plant and the Sagami Research Center were completed (at Sagamihara-shi, Kanagawa-ken) to start manufacturing EGR Coolers.|
|1997 Jan.||New Sagami Plant (at Sagamihara-shi, Kanagawa-ken) started full-scale commercial operations.|
|2000 Dec.||Sagami No. 2 Research Center (at Sagamihara-shi, Kanagawa-ken) was completed.|
|2001 Jan.||New Sagami No. 2 Plant (at Sagamihara-shi, Kanagawa-ken) was completed to start manufacturing plastic intake manifold (LCI).|
|2001 Feb.||Universal Cat Systems, Inc. was established.|
|2001 Oct.||TORO CATALYST Co. Ltd. was established (in Hiroshima-ken)|
|2003 Apr.||Universal Cat Systems, Inc. was renamed Unicat, Inc.|
|2006 Aug.||Tokyo Roki (Suzhou) Co.,Ltd. was completed (at Suzhou, China).|
|2006 Oct.||We obtained ISO9001 management system certification (JQA-QMA12983) from Japan Quality Assurance Organization.
|2008 May.||New Sagami No. 3 Plant (at Sagamihara-shi, Kanagawa-ken) was completed.|
|2010 Nov.||Thai Amata Plant (Tokyo Roki (Thailand) Co., Ltd.) was completed.|
|2013 Nov.||Mexico Plant (Tokyo Roki de Mexico, S.A. de C.V. ) was completed.|
|2013 Nov.||Thai Gateway Plant (Tokyo Roki (Thailand) Co., Ltd.) was completed.|
|2019 Oct.||New Hiroshima R&D Center was completed.|