SF

Seiji Fujiwara

Sumitomo Electric Industries: 3 patents #364 of 3,885Top 10%
CL Central Glass Company, Limited: 1 patents #28 of 71Top 40%
📍 Kamakura, JP: #6 of 97 inventorsTop 7%
Overall (2003): #12,871 of 273,478Top 5%
4
Patents 2003

Issued Patents 2003

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6645893 Glass suitable for optical functional elements and process for producing same Kiyotaka Miura, Takuya Teshima, Natsuya Nishimura, Yoshinori Kubota 2003-11-11
6590449 Predistortion circuit, low-distortion power amplifier, and control methods therefor Toru Matsuura, Kaoru Ishida, Makoto Sakakura 2003-07-08
6545542 Power amplifier with coupler for cross-coupling amplifiers for reduction of differential frequency component Toshimitsu Matsuyoshi, Kaoru Ishida, Masayuki Miyaji 2003-04-08
6507253 Delay circuit and feedforward amplifier Toshimitsu Matsuyoshi, Toru Matsuura, Kaoru Ishida 2003-01-14