AH

Akiyoshi Hattori

NI Ngk Insulators: 14 patents #225 of 2,083Top 15%
Sumitomo Electric Industries: 7 patents #3,987 of 21,551Top 20%
NI Nitsuko: 4 patents #6 of 78Top 8%
Ngk Spark Plug Co.: 2 patents #703 of 1,594Top 45%
Overall (All Time): #142,729 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #TitleCo-InventorsDate
D307144 Key telephone set — 1990-04-10
D299823 Key telephone set — 1989-02-14