1947The company name changes to Aso Mining Co Ltd from Mitsui Mining & Smelting Co Ltd.
The company starts shipping limonite in the form of iron ores to Yawata Steel Works run by Yawata Iron & Steel Co Ltd.
1961Yawata Iron & Steel Co Ltd opens a subsidiary, Ariake Iron & Steel Co Ltd, in Kumamoto City, and starts supplying manufacturing materials to the new company.
1966Japan Limonite Mining Co Ltd is founded and starts operating The First Aso Mine as a limonite mine.
The company commences shipment to Tanabe Glaze Store, Yamaguchi Bengal Red Co Ltd and Iwao Jiki Kogyo Co Ltd.
1968Limonite receives recognition with its effect as an adsorption agent for hydrogen sulfide, and the company starts providing limonite as a raw material of desulfurizing hydrogen agents.
Customers: Nihon Tokushu Rozai Co Ltd; Seitetsu Kagaku Co Ltd; Tokyo Gas Co Ltd; Osaka Gas Co Ltd; others.
1971The study on desulfurizing hydrogen agents is commenced with Kumamoto Regional R&D Program Fund at the Kumamoto Prefecture Industrial Research Institute.
1973Mitsui Mining & Coke Co Ltd starts using a dry desulfurizing method with limonite as its desulfurizing hydrogen agent. The company starts shipping 700 tons of limonite per month in collaboration with Mitsui Mining Co Ltd, Mitsui & Co Ltd and Nippon Steel Corporation.
1977Following the study by the Kumamoto Prefecture Industrial Research Institute, the company creates a new desulfurizing hydrogen agent by blending limonite with intermediately treated industrial waste collected from other companies.
The company commences the recycling of industrial waste.
1978The company obtains permission to act as Industrial Waste Disposer.

Kumamoto Prefecture Environment Maintenance Order No 10 … 2 May 1978
1979The company obtains permission to act as Industrial Waste Disposer.

Kumamoto Prefecture Environment Maintenance Order No 183 … 29 September 1979
Nagasaki Prefecture Environment Maintenance Order
No 155 … 31 July 1979
1981The company obtains permission to act as Industrial Waste Disposer.

Kumamoto Prefecture Environment Maintenance Order
No 457 … 12 October 1981
Fukuoka Prefecture Industrial Waste Disposer
No 520 … 10 November 1981
1982To widen the application of Aso yellow ocher, the research on potential of Aso yellow ocher as a livestock feed begins at Kumamoto Prefecture Livestock Experiment Station.
1983The company starts production and sales of a limonite-based livestock feed.
The notification to act as an animal feed manufacturer is submitted to Ministry of Agriculture, Forestry and Fisheries (MAFF) … 31 July 1979
1985The company starts production and sales of a limonite-based soil improvement agent (Active Iron).
1986The company starts production and sales of limonite-based nourishing iron for aquaculture.
The change in notification to act as an animal feed manufacturer is submitted to MAFF … 7 October 1986
1993Sales of Aso yellow ocher as feed for stockbreeding begin under the trade name, “Light Mineral”.
1994The company obtains permission to act as Industrial Waste Intermediary Disposer.

Kumamoto Prefecture
Permission No 4320023388 … 19 September 1994
2001Patents on the recycling of desulfurization hydrogen agent are filed jointly with Kumamoto Industrial Research Center. In addition, the subsidy for creative technology research and development is awarded by the Kumamoto Prefectural Government.
2002The company name changes to Japan Limonite Co Ltd (formerly Japan Limonite Mining Co Ltd).
The company starts selling “Limonic”, “Limonido” and general products such as “Vigor” and “Limotan”.
2003Sales of limonite china, “Ibushi” series, begin (Sosuiyaki, Daichi-no-wa).
2005Sales of limonite ceramic tiles and bathing appliances, “Yushoseki” begin. Limotiles are introduced to ganban-yoku facilities at Kurokawa hot spring resorts in Aso and across Japan.
2006Capital increases to 100 million yen.
2007Sales of a cosmetic soap, “Aso Odo Shabon”, begin.
In 2008, the soap is awarded for the Kumamoto Best New Product of the year.
2015The company receives the “Regional Environmental Preservation Contributor” award from Ministry of the Environment.
2016The company celebrates the 50th anniversary since its establishment.
The company receives a special award for miners (40 years-operations with no accidents) from Kyushu Industrial Safety and Inspection Department, a division of Ministry of Economy, Trade and Industry (METI).
2017The Kumamoto Prefectural Government awards the company as a Yoka Boss company (an Excellent Management company).
METI awards the company as a “Regional Future-Leading Company”.
2018The Kumamoto Prefectural Government awards the company as a “Blight Company”.
2019The company opens its MS Mineraso Obihiro Office in collaboration with Maezawa Engineering Service Inc.