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Yasumasa Yamakoshi

AK Asahi Kasei Kabushiki Kaisha: 3 patents #181 of 1,220Top 15%
Overall (All Time): #1,577,353 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7579385 Dried porous crumbs of hydrogenated block copolymer Toshinori Shiraki, Masami Kamaya 2009-08-25
6815509 Method for hydrogenation of polymer Koichi Miyamoto, Toshinori Shiraki 2004-11-09
6451964 Method for removing hydrocarbon solvent from solution of hydrogenated block copolymer in hydrocarbon solvent Atsuo Hakamaya, Masami Kamaya 2002-09-17