| 1948 |
- Kiyoshi Kato establishes the Kiyoshi Nassen Factory corporation. in Kamiooka Minami-ku, Yokohama-shi.
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| 1955 |
- The factory moves to its current location. (Mainly scarf printing)
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| 1972 |
- Nassen for saris (traditional Indian dress) through the introduction of automated nassen printing machines
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| 1989 |
- The name of the company is changed to establish Kiyoshi Fabrics corporation
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| 1992 |
- Yokohama Design corporation. is established as a private brand planning company of Kiyoshi Fabrics corporation
- The company is divided into Kiyoshi Fabrics as the manufacturing department and Yokohama Design as the planning and sales department.
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| 1993 |
- Yokohama Design corporation. is renamed hamamonyo corporation.
- Planning and sales of hamamonyo, an in-house brand that uses the Nassen technique, starts.
- Development of cotton shantung furoshiki (wrapping cloth) “Konuno” starts. Active development of “Nassen Tenugui” begins.
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| 1993 |
- hamamonyo plans Yokohama related goods, which are then exhibited and certified at the Yokohama Visitor Bureau’s ‘Yokohama 001’. (Has received certification every instance since)
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| 1995 |
- Expanded sales into department store, focusing mainly on Western accessories and women’s fashion sundry goods.
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| 1997 |
- Wholesale business expands to a nationwide Japanese-Western sundry goods chain
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| 2002 |
- Name is changed to Case corporation. hamamonyo is placed at the center of the in-house brand, with planning and sales strengthened.
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| 2005 |
- Tenugui-Bon is registered as a trademark, planning and sales of the Tenugui-Bon series is strengthened.
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| 2007 |
- The Yokohama Furoshiki Series is awarded the Ishizaka Koji Award Grand Prix at the Twelfth Yokohama Goods show Yokohama 001 from the Yokohama Convention & Visitors’ Bureau.
- The Tenugui-Bon is exhibited at the Katachi Modern Japan Design exhibit at the Angewandte Kunst Museum in Frankfurt Germany.
- The Tenugui-Bon receives the 2007 Good Design Award along with the Good Design Award of Small and Medium Enterprises.
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| 2008 |
- The Yokohama Furoshiki Series is awarded the Ishizaka Koji Award Grand Prix at the Twelfth Yokohama Goods show Yokohama 001 from the Yokohama Convention & Visitors’ Bureau.
- The Tenugui Iroha Handkerchief wins the 2008 Good Design Award.
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| 2009 |
- Established product center in Naka-ku,Yokohama.
- JR East ecute NIPPORI shop opens.Started managing directly operated stores.
- Register “hamamonyo” as a trademark in the United States.
- Register “hamamonyo” as a trademark in EU.
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| 2010 |
- Register “hamamonyo” as a trademark in China.
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| 2014 |
- kasane-e tenugui wins the 2014 Good Design Award.
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| 2016 |
- hamamonyo Kime opens a direct shop in Ginza.
- Maruyamadai lab opens to expand inkjet bussiness.
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| 2017 |
- New concept store “hamamonyo” Yokohama Motomachi store opening business.
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