YF

Yasushi Fukumura

Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
Overall (All Time): #1,618,661 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6465082 Stress relaxation electronic part, stress relaxation wiring board, and stress relaxation electronic part mounted body Hiroaki Takezawa, Masahide Tsukamoto, Minehiro Itagaki, Yoshihiro Bessho, Hideo Hatanaka +2 more 2002-10-15
5481795 Method of manufacturing organic substrate used for printed circuits Akihito Hatakeyama, Hiroshi Sogo, Tamao Kojima, Yasuhiko Horio, Masahide Tsukamoto 1996-01-09
5346750 Porous substrate and conductive ink filled vias for printed circuits Akihito Hatakeyama, Hiroshi Sogo, Tamao Kojima, Yasuhiko Horio, Masahide Tsukamoto 1994-09-13