YK

Yasushi Kumagai

SI Sanyo Chemical Industries: 3 patents #83 of 607Top 15%
KT Kabushiki Kaisha Toshiba: 2 patents #9,982 of 21,451Top 50%
AC Asahi Fiber Glass Co.: 1 patents #24 of 84Top 30%
Overall (All Time): #1,018,826 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
8237295 Semiconductor device, method for manufacturing semiconductor device, and manufacturing apparatus for semiconductor device Yuichi Sano, Takashi Imoto, Naoto Takebe, Katsuhiro Ishida, Tomomi Honda 2012-08-07
7994642 Semiconductor device which includes contact plug and embedded interconnection connected to contact plug Makoto Sakuma 2011-08-09
6673415 Honeycomb core material for sandwich structure and method for manufacturing the same Kaoru Yamazaki, Tomokazu Shimizu, Akira Inoue, Masamichi Taguchi, Kengo Ozaki 2004-01-06
6455606 Polyurethane foam, process for producing the same, and foam forming composition Motonao Kaku, Toru Nakanishi, Tatsuroh Yanagi, Tsuyoshi Tomosada, Kunikiyo Yoshio +4 more 2002-09-24
5401785 Foamed polyurethane-forming composition, foamed polyurethane and process making the same Sukeo Ban, Yuichi Sasatani 1995-03-28