HK

Hirotaka Kawai

Yamaha: 7 patents #1 of 230Top 1%
Overall (2011): #8,591 of 364,097Top 3%
7
Patents 2011

Issued Patents 2011

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
8059834 Automatic gain control circuit Yasuomi Tanaka, Nobuaki Tsuji 2011-11-15
7990211 Class D amplifier circuit Nobuaki Tsuji, Yasuomi Tanaka 2011-08-02
7982522 Semiconductor integrated circuit for realizing an amplifier having ringing reduction circuitry Nobuaki Tsuji 2011-07-19
7948313 Class D amplifier circuit Nobuaki Tsuji 2011-05-24
7924089 Offset voltage correction circuit and class D amplifier Yasuomi Tanaka, Nobuaki Tsuji 2011-04-12
7920082 D/A converter circuit and digital input class-D amplifier Nobuaki Tsuji, Morito Morishima, Yohei Otani 2011-04-05
7912112 Spectrum spreading circuit Nobuaki Tsuji, Yasuomi Tanaka 2011-03-22