Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
KH

Kyofu Hoshikawa

Bridgestone: 1 patents #1,586 of 2,860Top 60%
Overall (All Time): #2,241,316 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6107580 Omnidirectional response cable switch Seishiro Ishiwatari, Mitsuru Tanahashi, Tadamitsu Sasaki 2000-08-22
4617433 Pressure-sensitive conductive strip switch assembly and a method of manufacturing the same Seishiro Ishiwatari, Mitsuru Tanahashi 1986-10-14