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Ryotaro UMEZU

MC Mitsubishi Gas Chemical Company: 4 patents #481 of 1,727Top 30%
Overall (All Time): #1,069,433 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
12202786 Method for producing aromatic nitrile compound and method for producing carbonate ester Hidefumi Harada, Takehiko Isobe, Keisuke Shimokawa 2025-01-21
11970442 Method for producing carbonic ester Hidefumi Harada, Takehiko Isobe, Hongyu Liu, Yousuke Shinkai 2024-04-30
11673856 Method for producing aromatic nitrile compound and method for producing carbonate ester Hidefumi Harada, Takehiko Isobe, Keisuke Shimokawa 2023-06-13
11596936 Method for regenerating catalyst and method for producing carbonate ester Hidefumi Harada, Takehiko Isobe, Hongyu Liu, Yousuke Shinkai 2023-03-07