Showa Bond Holdings Inc.

On June 4, 1958, established as Showa Kogyo Co., Ltd. in Setagaya-ku, Tokyo, and began general construction work using rigid vinyl chloride and polyethylene.

On June 4, 1958, registered as Showa Kogyo Co., Ltd. in Setagaya-ku, Tokyo, founded by founder Akira Ueda at age 31.

東京都世田谷区において、「昭和工業株式会社」として設立され、硬質塩化ビニールおよびポリエチレンを使用する工事施工一般の事業を開始しました。

1958年6月4日、当社は「昭和工業株式会社」として、東京都世田谷区に設立登記されました。

Developed Showa Bond, a civil engineering adhesive.

土木建築用接着剤「ショーボンド」を開発

In 1959, developed high-performance epoxy resin-based strong adhesive (equivalent to current #101).

1959年9月、エポキシ樹脂系高性能強力接着剤（現在の＃101相当品）を開発。

1959年11月よりショーボンドの生産を開始しました。

Started manufacturing, sales, and construction of Showa Bond products. Performance test results from the University of Tokyo's Institute of Industrial Science and other institutions were highly favorable. Headquarters relocated to Chiyoda-ku, Tokyo.

Started production of Showa Bond in November 1959. In 1960, moved headquarters to Chiyoda-ku, Tokyo, and began sales and construction of Showa Bond products.

「ショーボンド」の製造・販売・施工に関する事業を開始

東京大学生産技術研究所などから「ショーボンド」製品の性能試験結果が良好と評価される

本社を東京都千代田区に移転

1960年、本社を東京都千代田区に移し、ショーボンドの販売・施工を開始。

Registered as a construction industry operator with the Governor of Tokyo. Changed trade name to Showa Bond Corporation. Capital: 10 million yen.

建設業者の東京都知事登録

商号を「株式会社ショーボンド」に変更

Renamed to Showa Bond Co., Ltd. in June 1963.

Responsible for resin injection of cracks in the floor slab during the restoration work of Showa Bridge, which collapsed due to the Niigata Earthquake, establishing the company's position in structural repair as civil engineering work.

In summer 1964, the Showa Bridge, newly completed, collapsed due to the Niigata Earthquake, with numerous cracks in the floor slab. The company participated in the restoration using a new concrete repair material, which was successfully completed by winter, marking a turning point for the company's future.

新潟地震により落橋した昭和大橋の復旧工事で、床版ひび割れの樹脂注入を担当、土木工事としての構造物補修の地位を固める

1964年夏に発生した新潟地震により昭和大橋が落橋し、床版に無数のひび割れが発生。

In March 1965, jointly developed and applied for a patent for the road bridge expansion joint 'Cutoff Joint,' and conducted trial construction on the Meishin Expressway between Ichinomiya and Komaki.

1965年3月、日本道路公団と共同で開発し特許出願した道路橋伸縮装置「カットオフジョイント」の試験施工を名神高速道路の一宮・小牧間で実施。

Registration as a construction industry operator changed to approval by the Minister of Construction (now the Minister of Land, Infrastructure, Transport and Tourism). Capital: 70 million yen.

建設業者の登録を建設大臣（現国土交通大臣）許可に変更

In February 1969, changed registration from Tokyo Metropolitan Governor to approval by the Minister of Construction, expanding operations nationwide as a specialized repair company.

1969年2月、建設業の登録を東京都知事から建設大臣許可に変更し、補修に特化した特殊工事会社として全国に営業拠点を展開。

The company's scale significantly increased following related construction work for the Osaka Expo, with capital reaching 105 million yen in 1970 and 200 million yen in 1973.

1970年、資本金が1億500万円に増資。

ショーボンドミニを開発、発売(2)

利根床版補強実験

Capital increased to 200 million yen in 1973.

1973年、資本金が2億円に増資。

Changed trade name to Showa Bond Construction Co., Ltd. Headquarters relocated to Shinjuku-ku, Tokyo. Capital: 460 million yen.

In 1975, Showa Bond Co., Ltd. was split into Showa Bond Construction Co., Ltd. and Showa Bond Chemical Co., Ltd., clarifying the company's growth path as a specialized construction company.

商号を「ショーボンド建設株式会社」に変更

本社を東京都新宿区に移転

“ショーボンド建設”誕生

創業者・上田昭（社長在任1958～1992年）

本社をヴォーグビル内に移転

In the December 1975 fiscal year, achieved record sales of 8.3 billion yen.

Established a technical research institute in Omiya, Saitama Prefecture. Capital: 550 million yen.

埼玉県大宮市（当時）に技術研究所を設立

100t門型載荷試験装置

大宮に完成した中央技術研究所

In June 1977, sales exceeded 10.7 billion yen for the first time.

1977年6月期には、売上高107億円と初めて売上が100億円を上回りました

In July 1977, established and relocated the Technical Research Institute to Omiya (now Saitama City), renamed as the Central Technical Research Institute, to develop new products and methods integrating civil engineering and chemical technology.

1977年7月に、技術研究所を大宮市（現さいたま市）に新設移転し、中央技術研究所と改称。土木技術と化学技術が融合した新製品・新工法を開発する「技術のショーボンド」の充実をはかりました。以降、スイス製管継手の輸入・販売や新工法の開発など多くの技術展開をひろげ、建設省建築研究所で実施された日米共同耐震実験においては、コンクリート耐震壁に入ったひび割れ補修にビックス工法が採用され、大きな評価を得ました。

宮城沖地震で被災した工事中の東北新幹線橋脚補修

Construction of slab coating for the Ohmishima Bridge in the Seto Inland Sea.

Second phase of slab coating for the Ohmishima Bridge.

Tunnel face water guidance method.

Public experiment of SB Panel (1).

Public experiment of SB Panel (2).

Adoption of Biggs method in Japan-US joint large-scale seismic experiment at the Building Research Institute of the Ministry of Construction (1).

Adoption of Biggs method in Japan-US joint large-scale seismic experiment at the Building Research Institute of the Ministry of Construction (2).

Participated in the Japan-US joint large-scale seismic experiment.

In June 1981, sales exceeded 15 billion yen for the first time.

1981年6月期には、初めて売上高が150億円を上回り

Signed the contract for the domestic production of Strab Coupling.

U-shaped water guidance method for the Seikan Tunnel.

In June 1982, sales again exceeded 15 billion yen.

1982年6月期も150億円超の売上を記録しました

Development of DD Biggs method.

Development of ST Joint.

First construction in Japan of SB Panel at Chashibetsu Bridge deck replacement.

Renovation of Namioka Hospital damaged in the Japan Sea earthquake (Aomori Prefecture).

Development of Langage Joint.

Salt damage countermeasure work on Kuretsu Bridge.

Repair work on Iwate and Hachinohe rocks (Aomori Prefecture).

Rejuvenation method for bearing supports.

Release of Biggs set.

In June 1986, the first year sales exceeded 20 billion yen, reaching 22.8 billion yen.

Listed on the Second Section of the Tokyo Stock Exchange. Capital: 2.545 billion yen.

Completion of large-scale renovation of Hasazen Building (Miyagi Prefecture).

Listed on the Second Section of the Tokyo Stock Exchange. Received approval notification for securities listing from Director Michio Takeuchi.

Completion of U-shaped water guidance work for the Seikan Tunnel joints.

東京証券取引所第二部に株式を上場

1987年5月、東京証券取引所第二部への株式上場を果たし

1987年6月期の売上高は253億円を記録しました

Designated as a stock of the First Section of the Tokyo Stock Exchange. Capital: 5.3842 billion yen.

Notification of designation as a First Section stock of the Tokyo Stock Exchange.

東京証券取引所第一部銘柄に指定

Headquarters relocated to Chiyoda-ku, Tokyo.

Construction of exterior of Nihonbashi Elevated Bridge (1).

Construction of exterior of Nihonbashi Elevated Bridge (2).

Received the All Japan Construction Award for repair work on Nobi Ohashi (SB Panel).

Relocated headquarters to Kanda, Chiyoda-ku.

Developed SI Board (standard type).

Developed Jack Beam Method.

本社を東京都千代田区に移転

Signed agreement for Swiss Franc-denominated warrant bonds (Zurich).

Second-generation President, Shigeru Hiyagaki (President from 1992 to 1998).

Public experiment of external cable reinforcement system.

Responded with full effort to disaster recovery from the Southern Hyogo Earthquake. The importance of structural repair was strongly recognized socially.

Briefing on the replacement work of composite girders using external cables at Sakuragawa Bridge (Yamagata Prefecture).

First replacement work of composite girder deck using external cables in Japan.

Occurrence of Hyogo Prefecture Southern Earthquake.

No damage to the pier reinforcement completed just before the Hyogo Southern Earthquake.

兵庫県南部地震の災害復旧に全社を挙げて対応。これにより、構造物補修の重要性が社会的に強く認知される

Relocated research facility to Tsukuba City, Ibaraki Prefecture, and established the Repair Engineering Research Institute. Capital: 10.1 billion yen.

Renovation work on Kobe City Hall (Hyogo Prefecture).

Renovation of Osaka Castle Main Keep.

Completion of Repair Engineering Research Institute in Tsukuba.

Large-scale experimental building at the Repair Engineering Research Institute.

茨城県つくば市に研究施設を移転、「補修工学研究所」とする

Headquarters relocated to Koto-ku, Tokyo.

本社を東京都江東区に移転

On January 4, 2008, established Showa Bond Holdings Inc. through a share transfer method, making Showa Bond Construction Co., Ltd., Showa Bond Chemical Co., Ltd., and Showa Bond Coupling Co., Ltd. wholly owned subsidiaries. Capital: 5 billion yen.

株式移転方式により完全親会社である「ショーボンドホールディングス株式会社」を設立し、ショーボンド建設株式会社、ショーボンド化学株式会社、およびショーボンドカップリング株式会社を当社の完全子会社とする

Headquarters relocated to Chuo-ku, Tokyo.

本社を東京都中央区に移転

Merged Showa Bond Chemical Co., Ltd. and Showa Bond Coupling Co., Ltd., and changed the company name to Showa Bond Material Co., Ltd.

当社子会社のショーボンド化学株式会社およびショーボンドカップリング株式会社を合併し、社名を「ショーボンドマテリアル株式会社」に変更

Established SHO-BOND & MIT Infrastructure Maintenance Co., Ltd. as a joint venture with Mitsui & Co., Ltd. for overseas business expansion.

三井物産株式会社と海外事業展開に向けた合弁会社として、SHO-BOND&MIT インフラメンテナンス株式会社を設立

Transitioned to the Prime Market following the reorganization of the Tokyo Stock Exchange.

東京証券取引所の市場再編に伴い、プライム市場に移行