Patents/Inventors

Akira Okubo

TokyoJP3 patents

3 Patents

US125530052026
Agent for Forming Solid Lubricating Coating Film, Oil Country Tubular Goods, and Threaded Joint for Oil Country Tubular Goods
TOYO DRILUBE CO., Ltd.
0 cites
US124485812025
Agent, Oil Country Tubular Goods, and Threaded Joint for Oil Country Tubular Goods
TOYO DRILUBE CO., Ltd.
0 cites
US123125522025
Agent for Forming Solid Lubricating Coating Film, Oil Country Tubular Goods, Threaded Joint for Oil Country Tubular Goods, and Method for Manufacturing Oil Country Tubular Goods
TOYO DRILUBE CO., Ltd.
0 cites