| 1956年04月 |
Yamashin Industry Inc. established with capital of 500,000 yen as filter manufacturing and sales company in Higashi-kamata, Ota-ku, Tokyo |
| 1966年09月 |
New head office and factory opens in Omori-minami, Ota-ku, Tokyo. |
| 1972年10月 |
Second factory opens in Omori-minami, Ota-ku, Tokyo. |
| 1975年05月 |
Saga Branch Office opens in Kamimine-mura, Miyaki-gun, Saga (now Kamimine-cho, Miyaki-gun, Saga). |
| 1977年02月 |
Full-scale production of filter elements begins at Saga Branch Office factory. |
| 1978年02月 |
Full-scale production of fiberglass filter media begins at Saga Branch Office factory. |
| 1984年10月 |
R&D Laboratory opens in Higashi-oi, Shinagawa-ku, Tokyo. |
| 1984年11月 |
Manufacturing and sales of precision process filters begins. |
| 1989年04月 |
Local subsidiary YAMASHIN CEBU FILTER MANUFACTURING CORPORATION established on Cebu Island, Philippines |
| 1991年12月 |
Head office relocates from Omori-minami, Ota-ku, Tokyo to Nishi-kanagawa, Kanagawa-ku, Yokohama-shi, Kanagawa. |
| 1995年07月 |
Factory and secondary factory in the former head office site in Ota-ku, Tokyo relocates within Saga Branch Office; former head office factory becomes R&D Laboratory. |
| 1995年07月 |
Local subsidiary YAMASHIN AMERICA INCORPORATED established in Chicago, USA |
| 1996年04月 |
Local subsidiary YAMASHIN EUROPE B.V. established in Rotterdam, Holland |
| 2001年02月 |
Local subsidiary YAMASHIN THAI LIMITED established in Ayutthaya, Thailand |
| 2001年09月 |
ISO 9001 certification acquired |
| 2002年04月 |
Work completed on precision filter manufacturing plant in Ayutthaya, Thailand; manufacturing begins. |
| 2003年04月 |
ISO 14001 certification acquired |
| 2005年10月 |
Yamashin Industry Inc. renamed Yamashin Filter Corp. |
| 2007年05月 |
A new factory of YAMASHIN THAI LIMITED opens in Ayutthaya, Thailand. |
| 2007年05月 |
Local subsidiary YAMASHIN FILTER SHANGHAI INCORPORATED established in Shanghai, China |
| 2007年06月 |
R&D Laboratory relocates within Saga Branch Office. |
| 2007年12月 |
Head office relocates from Nishi-kanagawa, Kanagawa-ku, Yokohama-shi, Kanagawa to Sakuragi-cho, Naka-ku, Yokohama-shi, Kanagawa. |
| 2010年09月 |
Local subsidiary YAMASHIN FILTER (SIP) RESEARCH & DEVELOPMENT CENTER INCORPORATED established in Suzhou, China |
| 2010年11月 |
Sales office of YAMASHIN THAI LIMITED opens in Bangkok. |
| 2010年12月 |
Local subsidiary YAMASHIN EUROPE BRUSSELS BVBA established in Brussels, Belgium |
| 2011年03月 |
YAMASHIN EUROPE BRUSSELS BVBA merges with YAMASHIN EUROPE B.V. |
| 2011年10月 |
Yokohama R&D Center opens in Sugita, Isogo-ku, Yokohama-shi, Kanagawa; R&D Laboratory of Saga Branch Office relocates within Yokohama R&D Center. |
| 2012年06月 |
YSK Corp established in Kamimine-cho, Miyaki-gun, Saga |
| 2012年12月 |
YAMASHIN THAI LIMITED closes its factory and becomes a sales company; its headquarters relocates from Thailand Ayutthaya to Bangkok. |
| 2013年02月 |
YAMASHIN FILTER (SIP) RESEARCH & DEVELOPMENT CENTER INCORPORATED renamed YAMASHIN FILTER (SIP) TECHNOLOGY INCORPORATED |
| 2014年10月 |
YAMASHIN-FILTER CORP. listed on Second Section of the Tokyo Stock Exchange |
| 2014年11月 |
Capital increased to 822 million yen |
| 2016年03月 |
YAMASHIN FILTER CORP. transferred to First Section of the Tokyo Stock Exchange |
| 2017年04月 |
YSK Corp's process filter manufacturing business transferred to Yamashin-Filter Corp. |
| 2017年12月 |
Yokosuka Media Laboratory opens in Uragou-cho, Yokosuka-shi, Kanagawa. |
| 2018年01月 |
Capital increased to 4,686 million yen |
| 2018年02月 |
Capital increased to 5,434 million yen |
| 2018年12月 |
YAMASHIN FILTER SHANGHAI INCORPORATED liquidated |
| 2019年08月 |
AQC Corporation made wholly-owned subsidiary |
| 2020年03月 |
YSK Corp. liquidated |
| 2020年11月 |
ベトナム・ヴィンフック省に現地法人YAMASHIN VIETNAM CO., LTDを設立 |
| 2020年11月 |
Local subsidiary YAMASHIN VIETNAM CO., LTD. established in Vinh Phuc Province, Vietnam. |
| 2021年10月 |
Saga Branch Office newly completed and opens in Kamimine-cho, Miyaki-gun, Saga. |
| 2022年01月 |
Yokosuka Innovation Center opens as the main R&D hub in Hikarinooka, Yokosuka-shi, Kanagawa. |
| 2022年04月 |
Moved to the Tokyo Stock Exchange Prime Market. |
| 2023年01月 |
Due to the revision of local laws, the corporate form of YAMASHIN EUROPE BRUSSELS is changed from BVBA to BV. |
