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.