| 1886 |
東京製綱会社（資本金7万円）を設立、国内初のマニラロープ製造を開始 |
| 1886 |
Tokyo Rope Mfg. Co., Ltd. established (capital: 70,000 yen). Begins manufacturing rope made of Manila hemp, as the first rope manufacturer in Japan. |
| 1897 |
国内初のワイヤーロープ製造を開始 |
| 1897 |
Begins manufacturing wire rope for the first time in Japan |
| 1942 |
蒲郡に繊維ロープの総合工場を新設 |
| 1942 |
Opens a general fiber rope factory in Gamagori |
| 1952 |
業界のトップを切り合繊ロープの製造を開始 |
| 1952 |
Begins manufacturing synthetic fiber rope, becoming the leading manufacturer in the industry |
| 1963 |
8ストランドで編組する「TOSCO機」を独自に設計製作し、エイトロープの製造を開始 |
| 1963 |
Designs and builds an 8-strand rope braiding machine called the "TOSCO machine" and began manufacturing 8-strand ropes. |
| 1968 |
東京製綱（株）の繊維ロープ部門を分離・独立し、東京製綱繊維ロープ（株）を設立 |
| 1968 |
The fiber rope department of Tokyo Rope Mfg. Co., Ltd. separated to establish Tokyo Seiko Rope Mfg. Co., Ltd. |
| 1976 |
編索機を独自に設計製作し、タフレロープの製造を開始 |
| 1976 |
Designs and builds a braiding machine and begins manufacturing Toughlay Rope |
| 1981 |
国内初のケブラー®製ロープ製造を開始（現在は、テクノーラ®、ベクトラン®、ダイニーマ®製ロープも製造） |
| 1981 |
Begins manufacturing Kevlar® rope for the first time in Japan (Tokyo Seiko Rope currently also manufactures Technora, Vectran, and Dyneema® ropes) |
| 1991 |
業界最大の繊維ロープ用5000kN引張試験機を設置 |
| 1991 |
Installs the industry's largest 5000 kN tensile testing machine for fiber rope |
| 1997 |
業界初ISO9001認証取得 |
| 1997 |
Becomes the first in the industry to be approved for ISO-9001 certification |
| 2000 |
編索機を設置し、トエルロープ（最大Φ180mm）の製造開始 |
| 2000 |
Installs a braiding machine to begin the manufacture of Twell Rope (max. Φ180 mm) |
| 2001 |
建設業許可登録（特定建設業）大臣許可取得（現在は愛知県知事許可） |
| 2001 |
Obtains permission from the Ministry of Land, Infrastructure, Transport and Tourism to register as a construction company (specified construction company. Currently, the permission is granted by the Governor of Aichi Prefecture) |
| 2009 |
新事務所落成 |
| 2009 |
New office completed |
| 2013 |
ISO14001認証取得 |
| 2013 |
張打式製綱機国立博物館重要科学技術史資料登録（現存する日本最古の製綱機） |
| 2013 |
Acquired ISO 14001 certification |
| 2013 |
The stretching-style rope loom (the oldest rope-making machine in Japan) owned by Tokyo Seiko Rope is registered as an "Essential Historical Material for Science and Technology" by Japan's National Museum of Nature and Science |
| 2019 |
ISO45001認証取得 |
| 2019 |
Acquires ISO 45001 certification |
