KK

Kazufumi Kawahara

AK Asahi Kasei Kabushiki Kaisha: 2 patents #302 of 1,220Top 25%
CC Chugoku Electric Power Co.: 2 patents #24 of 143Top 20%
AF Asahi Kasei Fibers: 1 patents #35 of 96Top 40%
Overall (All Time): #938,016 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
12163287 Fine cellulose fibers and production method therefor, nonwoven fabric, and fiber-reinforced resin and production method therefor Hirofumi Uchimura, Hirofumi Ono, Hirotaka Asai, Yoko Fujimoto, Naoaki Yamasaki 2024-12-10
10703070 Resin composite film including cellulose microfiber layer Yamato Saito, Masayuki Nakatani, Hiroko Kawaji, Yoko Fujimoto, Hirofumi Ono 2020-07-07
10323354 Fine cellulose fiber sheet Daisuke Sato, Hirofumi Ono, Yamato Saito 2019-06-18
9574313 Tsunami breakwater wall of retaining wall structure supported by steel pipe piles and its construction method Yuichi Shimizu, Kouji Tasaka 2017-02-21
8931976 Tsunami breakwater wall of multilayered steel pipe pile structure and its construction method Yuichi Shimizu, Kouji Tasaka 2015-01-13